NPORT-P: Filer Information

Filer CIK
0000067160 
Filer CCC
********  
Filer Investment Company Type
 
Is this a LIVE or TEST Filing? live is not checked LIVE test is not checked TEST
Would you like a Return Copy? return copy flag is not checked
Is this an electronic copy of an official filing submitted in paper format? Confirm flag is not checked

Submission Contact Information

Name
 
Phone
 
E-Mail Address
 

Notification Information

Notify via Filing Website only?Override internet flag is not checked
Series ID
S000018541 
Class (Contract) ID
C000051437 
Class (Contract) ID
C000067780 

NPORT-P: Part A: General Information

Item A.1. Information about the Registrant.

a. Name of Registrant
MML SERIES INVESTMENT FUND 
b. Investment Company Act file number for Registrant: (e.g., 811-______)
811-02224 
c. CIK number of Registrant
0000067160 
d. LEI of Registrant
VQ1HG47DNRJG3HBJH467 

e. Address and telephone number of Registrant.
Street Address 1
1295 State Street 
Street Address 2
 
City
Springfield 
State, if applicable
MASSACHUSETTS  
Foreign country, if applicable
UNITED STATES OF AMERICA  
Zip / Postal Code
01111-0001 
Telephone number
4137441000 

Item A.2. Information about the Series.

a. Name of Series.
MML Moderate Allocation Fund 
b. EDGAR series identifier (if any).
S000018541 
c. LEI of Series.
549300K83VW6FJ00TG70 

Item A.3. Reporting period.

a. Date of fiscal year-end.
2023-12-31 
b. Date as of which information is reported.
2023-09-30 

Item A.4. Final filing

Does the Fund anticipate that this will be its final filing on Form N PORT?Yes is not checked Yes No is checked No

NPORT-P: Part B: Information About the Fund

Report the following information for the Fund and its consolidated subsidiaries.

Item B.1. Assets and liabilities. Report amounts in U.S. dollars.

a. Total assets, including assets attributable to miscellaneous securities reported in Part D.
1131090886.66 
b. Total liabilities.
2557052.8 
c. Net assets.
1128533833.86 

Item B.2. Certain assets and liabilities. Report amounts in U.S. dollars.

a. Assets attributable to miscellaneous securities reported in Part D.
0 
b. Assets invested in a Controlled Foreign Corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities.
0 

c. Borrowings attributable to amounts payable for notes payable, bonds, and similar debt, as reported pursuant to rule 6-04(13)(a) of Regulation S-X [17 CFR 210.6-04(13)(a)].

Amounts payable within one year.
Banks or other financial institutions for borrowings.
0 
Controlled companies.
0 
Other affiliates.
0 
Others.
0 
Amounts payable after one year.
Banks or other financial institutions for borrowings.
0 
Controlled companies.
0 
Other affiliates.
0 
Others.
0 

d. Payables for investments purchased either (i) on a delayed delivery, when-issued, or other firm commitment basis, or (ii) on a standby commitment basis.

(i) On a delayed delivery, when-issued, or other firm commitment basis:
0 
(ii) On a standby commitment basis:
0 
e. Liquidation preference of outstanding preferred stock issued by the Fund.
0 
f. Cash and cash equivalents not reported in Parts C and D.
0 

Item B.3. Portfolio level risk metrics.

If the average value of the Fund's debt securities positions for the previous three months, in the aggregate, exceeds 25% or more of the Fund's net asset value, provide:

c. Credit Spread Risk (SDV01, CR01 or CS01). Provide the change in value of the portfolio resulting from a 1 basis point change in credit spreads where the shift is applied to the option adjusted spread, aggregated by investment grade and non-investment grade exposures, for each of the following maturities: 3 month, 1 year, 5 years, 10 years, and 30 years.

Investment grade.
Maturity period.
3 month.
 
1 year.
 
5 years.
 
10 years.
 
30 years.
 
Non-Investment grade.
Maturity period.
3 month.
 
1 year.
 
5 years.
 
10 years.
 
30 years.
 

For purposes of Item B.3., calculate value as the sum of the absolute values of:
(i) the value of each debt security,
(ii) the notional value of each swap, including, but not limited to, total return swaps, interest rate swaps, and credit default swaps, for which the underlying reference asset or assets are debt securities or an interest rate;
(iii) the notional value of each futures contract for which the underlying reference asset or assets are debt securities or an interest rate; and
(iv) the delta-adjusted notional value of any option for which the underlying reference asset is an asset described in clause (i),(ii), or (iii).

Report zero for maturities to which the Fund has no exposure. For exposures that fall between any of the listed maturities in (a) and (b), use linear interpolation to approximate exposure to each maturity listed above. For exposures outside of the range of maturities listed above, include those exposures in the nearest maturity.


Item B.4. Securities lending.

a. For each borrower in any securities lending transaction, provide the following information:

b. Did any securities lending counterparty provide any non-cash collateral? Radio button not checked Yes Radio button checked No

Item B.5. Return information.

a. Monthly total returns of the Fund for each of the preceding three months. If the Fund is a Multiple Class Fund, report returns for each class. Such returns shall be calculated in accordance with the methodologies outlined in Item 26(b) (1) of Form N-1A, Instruction 13 to sub-Item 1 of Item 4 of Form N-2, or Item 26(b) (i) of Form N-3, as applicable.

Monthly Total Return Record: 1
Monthly total returns of the Fund for each of the preceding three months – Month 1.
-3.73 
Monthly total returns of the Fund for each of the preceding three months – Month 2.
-1.94 
Monthly total returns of the Fund for each of the preceding three months – Month 3.
1.94 
b. Class identification number(s) (if any) of the Class(es) for which returns are reported.
C000051437 
Monthly Total Return Record: 2
Monthly total returns of the Fund for each of the preceding three months – Month 1.
-3.79 
Monthly total returns of the Fund for each of the preceding three months – Month 2.
-2.06 
Monthly total returns of the Fund for each of the preceding three months – Month 3.
1.97 
b. Class identification number(s) (if any) of the Class(es) for which returns are reported.
C000067780 

c. For each of the preceding three months, monthly net realized gain (loss) and net change in unrealized appreciation (or depreciation) attributable to derivatives for each of the following categories: commodity contracts, credit contracts, equity contracts, foreign exchange contracts, interest rate contracts, and other contracts. Within each such asset category, further report the same information for each of the following types of derivatives instrument: forward, future, option, swaption, swap, warrant, and other. Report in U.S. dollars. Losses and depreciation shall be reported as negative numbers.

d. For each of the preceding three months, monthly net realized gain (loss) and net change in unrealized appreciation (or depreciation) attributable to investment other than derivatives. Report in U.S. dollars. Losses and depreciation shall be reported as negative numbers.
Month 1


Monthly net realized gain(loss) – Month 1
-4686809.18 
Monthly net change in unrealized appreciation (or depreciation) – Month 1
-39660677.03 
Month 2
Monthly net realized gain(loss) – Month 2
-3156183.25 
Monthly net change in unrealized appreciation (or depreciation) – Month 2
-79735118.3 
Month 3
Monthly net realized gain(loss) – Month 3
-3431275.84 
Monthly net change in unrealized appreciation (or depreciation) – Month 3
26691922.78 

Item B.6. Flow information.

Provide the aggregate dollar amounts for sales and redemptions/repurchases of Fund shares during each of the preceding three months. If shares of the Fund are held in omnibus accounts, for purposes of calculating the Fund's sales, redemptions, and repurchases, use net sales or redemptions/repurchases from such omnibus accounts. The amounts to be reported under this Item should be after any front-end sales load has been deducted and before any deferred or contingent deferred sales load or charge has been deducted. Shares sold shall include shares sold by the Fund to a registered unit investment trust. For mergers and other acquisitions, include in the value of shares sold any transaction in which the Fund acquired the assets of another investment company or of a personal holding company in exchange for its own shares. For liquidations, include in the value of shares redeemed any transaction in which the Fund liquidated all or part of its assets. Exchanges are defined as the redemption or repurchase of shares of one Fund or series and the investment of all or part of the proceeds in shares of another Fund or series in the same family of investment companies.
Month 1
a. Total net asset value of shares sold (including exchanges but excluding reinvestment of dividends and distributions).
2081952 
b. Total net asset value of shares sold in connection with reinvestments of dividends and distributions.
0 
c. Total net asset value of shares redeemed or repurchased, including exchanges.
18309463.53 
Month 2
a. Total net asset value of shares sold (including exchanges but excluding reinvestment of dividends and distributions).
1415519.6 
b. Total net asset value of shares sold in connection with reinvestments of dividends and distributions.
119207071.17 
c. Total net asset value of shares redeemed or repurchased, including exchanges.
18842422.73 
Month 3
a. Total net asset value of shares sold (including exchanges but excluding reinvestment of dividends and distributions).
1532614.55 
b. Total net asset value of shares sold in connection with reinvestments of dividends and distributions.
0 
c. Total net asset value of shares redeemed or repurchased, including exchanges.
22330780.66 

Item B.7. Highly Liquid Investment Minimum information.

a. If applicable, provide the Fund's current Highly Liquid Investment Minimum.
 
b. If applicable, provide the number of days that the Fund's holdings in Highly Liquid Investments fell below the Fund's Highly Liquid Investment Minimum during the reporting period.
 
c. Did the Fund's Highly Liquid Investment Minimum change during the reporting period? Yes is not checked Yes No is not checked No N/A is not checked N/A

Item B.8. Derivatives Transactions.

For portfolio investments of open-end management investment companies, provide the percentage of the Fund's Highly Liquid Investments that it has pledged as margin or collateral in connection with derivatives transactions that are classified among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]:

(1) Moderately Liquid Investments
(2) Less Liquid Investments
(3) Illiquid Investments

For purposes of Item B.8, when computing the required percentage, the denominator should only include assets (and exclude liabilities) that are categorized by the Fund as Highly Liquid Investments.

Classification
 

Item B.9. Derivatives Exposure for limited derivatives users.

If the Fund is excepted from the rule 18f-4 [17 CFR 270.18f-4] program requirement and limit on fund leverage risk under rule 18f-4(c)(4) [17 CFR 270.18f-4(c)(4)], provide the following information:

a. Derivatives exposure (as defined in rule 18f-4(a) [17 CFR 270.18f-4(a)]), reported as a percentage of the Fund’s net asset value.
 
b. Exposure from currency derivatives that hedge currency risks, as provided in rule 18f-4(c)(4)(i)(B) [17 CFR 270.18f-4(c)(4)(i)(B)], reported as a percentage of the Fund's net asset value.
 
c. Exposure from interest rate derivatives that hedge interest rate risks, as provided in rule 18f-4(c)(4)(i)(B) [17 CFR 270.18f-4(c)(4)(i)(B)], reported as a percentage of the Fund's net asset value.
 
d. The number of business days, if any, in excess of the five-business-day period described in rule 18f-4(c)(4)(ii) [17 CFR 270.18f-4(c)(4)(ii)], that the Fund’s derivatives exposure exceeded 10 percent of its net assets during the reporting period.
 

Item B.10. VaR information.

For Funds subject to the limit on fund leverage risk described in rule 18f-4(c)(2) [17 CFR 270.18f-4(c)(2)], provide the following information, as determined in accordance with the requirement under rule 18f-4(c)(2)(ii) to determine the fund’s compliance with the applicable VaR test at least once each business day:

a. Median daily VaR during the reporting period, reported as a percentage of the Fund's net asset value.
 
b. For Funds that were subject to the Relative VaR Test during the reporting period, provide:
i. As applicable, the name of the Fund’s Designated Index, or a statement that the Fund's Designated Reference Portfolio is the Fund’s Securities Portfolio.
 
ii. As applicable, the index identifier for the Fund’s Designated Index.
 
iii. Median VaR Ratio during the reporting period, reported as a percentage of the VaRof the Fund's Designated Reference Portfolio.
 
c. Backtesting Results. Number of exceptions that the Fund identified as a result of its backtesting of its VaR calculation model (as described in rule 18f-4(c)(1)(iv) [17 CFR 270.18f-4(c)(1)(iv)] during the reporting period.
 

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
INVESCO VI GLOBAL STRATEGIC IN 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
5493008ONMVUBK1SII17 
c. Title of the issue or description of the investment.
INVESCO GLB STRTR INC SI 
d. CUSIP (if any).
00900X884 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US00900X8847 
Identifier.
Ticker (if ISIN is not available)
Ticker (if ISIN is not available).
OPGSVN 
Identifier.
Other unique identifier (if ticker and ISIN are not available). Indicate the type of identifier used
Other unique identifier (if ticker and ISIN are not available). Indicate the type of identifier used
BJS9C49 
Description of other unique identifier.
SEDOL Number 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
3404001.083 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
13684084.35 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
1.212554195491 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML BLUE CHIP GROWTH FD 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
5493005CPH29995E7509 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097742 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530977421 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
4643207.568 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
65190634.25 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
5.776577741318 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML DYNAMIC BOND FUND 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
549300NGRYJ7PDBF2R17 
c. Title of the issue or description of the investment.
DYNAMIC BD FD CL II 
d. CUSIP (if any).
55312G689 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US55312G6897 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
11559319.897 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
91203033.99 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
8.08155070354 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML EQUITY INCOME FD 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
549300NLQECK0VBFCG40 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097775 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530977751 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
6219833.332 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
55729706.65 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
4.938239774291 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML FOCUSED EQUITY FUND 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
549300SLRZRGITT1HD33 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097197 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530971978 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
15793995.257 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
102976849.08 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
9.124834895537 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML FOREIGN FD 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
KUU66DUKIL2JQ2M4M983 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097650 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530976506 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
3433399.881 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
29664574.97 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
2.628594206036 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML FUNDAMENTAL GROWTH FUND 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
5493004SX3XV4PR5XZ31 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097171 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530971713 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
4759328.062 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
43738224.89 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
3.875668019664 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML FUNDAMENTAL VALUE FUND 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
549300C6NIUE0KC40C89 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097213 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530972133 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
5229366.805 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
57993677.87 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
5.138851501832 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML GLOBAL FD 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
8T9HINFCQAU4P1AO8856 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097668 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530976688 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
8614785.276 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
32994627.61 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
2.923671991042 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML HIGH YIELD FUND 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
OY83G6ZQVMBD0GRMDD62 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
55312G739 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US55312G7390 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
368993.754 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
2966709.78 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
0.262881775538 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML INCOME AND GROWTH FD 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
UQWC7R69CJ01IKYBPI08 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097767 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530977678 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
3145552.539 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
28844716.78 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
2.555946123595 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML INFLATION PROTECTED BD FD 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
6GN6GDL3K7U3DFNZ8J62 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
55312G200 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US55312G2003 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
2381518.738 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
19790420.71 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
1.75363999875 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML INTERNATIONAL EQUITY FUND 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
549300H6NY8A0TMQJW78 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097155 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530971556 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
9447308.752 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
87387605.96 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
7.743463539866 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML LARGE CAP GROWTH FD 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
5493005JIDUT7TI47C17 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097734 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530977348 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
4303461.852 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
52416165.36 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
4.644625069035 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML MANAGED BOND FUND 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
P1YXM1SSOECE52ITGE86 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
55312G309 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US55312G3092 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
14363087.998 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
145188915.95 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
12.865269218682 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML MID CAP GROWTH FD 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
5493005302W8XSI8PO73 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097692 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530976928 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
4126141.098 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
39693477.36 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
3.517260729723 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML MID CAP VALUE FD 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
OTUI2C89WJJ8N9HWQ618 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097718 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530977181 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
4229019.038 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
30279776.31 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
2.683107533111 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML SHORT DURATION BOND FUND 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
XL07OZJZFFLZ255H7071 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
55312G754 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US55312G7549 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
4807048.99 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
41580973.76 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
3.684512817642 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML SMALL CAP GROWTH EQUITY FD 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
HQ4SSOSDU7DRRXL6HW28 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097205 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530972059 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
952393.666 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
8299836.51 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
0.735453050762 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML SMALL COMPANY VALUE FUND 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
549300QHTZT44DQGZI95 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097262 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530972620 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
2280758.794 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
16968845.43 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
1.503618670604 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML SMALL/MID CAP VALUE 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
5493001OCN5BF7GVLF58 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097684 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530976845 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
1252395.474 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
9781208.65 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
0.866718245969 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML STRG EMERGING MARKETS FUND 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
UUQILHQK9J5HZYCT1J23 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
55312G770 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US55312G7705 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
2640882.814 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
13125187.59 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
1.163030048032 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
MML TOTAL RETURN BOND FUND 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
E6C49Z35RNRPSZ4OIX81 
c. Title of the issue or description of the investment.
MUTUAL FUND 
d. CUSIP (if any).
553097221 

At least one of the following other identifiers:

Identifier.
ISIN
ISIN
US5530972216 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
15242945.366 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
127888311.62 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
11.332253210573 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part C: Schedule of Portfolio Investments

For each investment held by the Fund and its consolidated subsidiaries, disclose the information requested in Part C. A Fund may report information for securities in an aggregate amount not exceeding five percent of its total assets as miscellaneous securities in Part D in lieu of reporting those securities in Part C, provided that the securities so listed are not restricted, have been held for not more than one year prior to the end of the reporting period covered by this report, and have not been previously reported by name to the shareholders of the Fund or to any exchange, or set forth in any registration statement, application, or report to shareholders or otherwise made available to the public.

Item C.1. Identification of investment.

a. Name of issuer (if any).
PIMCO VARIABLE INSURANCE TRUST 
b. LEI (if any) of issuer. In the case of a holding in a fund that is a series of a series trust, report the LEI of the series.
1HF6TMDVSLQTVB8TF611 
c. Title of the issue or description of the investment.
PIMCO VIT LG TERM GOVT INS 
d. CUSIP (if any).
693394710 

At least one of the following other identifiers:

Identifier.
Ticker (if ISIN is not available)
Ticker (if ISIN is not available).
VPVLTI 

Item C.2. Amount of each investment.

Balance. Indicate whether amount is expressed in number of shares, principal amount, or other units. For derivatives contracts, as applicable, provide the number of contracts.

Balance
1709608.788 
Units
Number of shares  
Description of other units.
 
Currency. Indicate the currency in which the investment is denominated.
United States Dollar  
Value. Report values in U.S. dollars. If currency of investment is not denominated in U.S. dollars, provide the exchange rate used to calculate value.
12155318.48 
Exchange rate.
 
Percentage value compared to net assets of the Fund.
1.077089415957 

Item C.3. Indicate payoff profile among the following categories (long, short, N/A). For derivatives, respond N/A to this Item and respond to the relevant payoff profile question in Item C.11.

Payoff profile. Long is checked Long Short is not checked Short N/A is not checked N/A

Item C.4. Asset and issuer type. Select the category that most closely identifies the instrument among each of the following:

Asset type (short-term investment vehicle (e.g., money market fund, liquidity pool, or other cash management vehicle), repurchase agreement, equity-common, equity-preferred, debt, derivative-commodity, derivative-credit, derivative-equity, derivative-foreign exchange, derivative-interest rate, derivatives-other, structured note, loan, ABS-mortgage backed security, ABS-asset backed commercial paper, ABS-collateralized bond/debt obligation, ABS-other, commodity, real estate, other). If “other,” provide a brief description.
Equity-common  
Issuer type (corporate, U.S. Treasury, U.S. government agency, U.S. government sponsored entity, municipal, non-U.S. sovereign, private fund, registered fund, other). If “other”, provide a brief description.
Registered fund  

Item C.5. Country of investment or issuer.

Report the ISO country code that corresponds to the country where the issuer is organized.
UNITED STATES OF AMERICA  
If different from the country where the issuer is organized, also report the ISO country code that corresponds to the country of investment or issuer based on the concentrations of the risk and economic exposure of the investments.
 

Item C.6. Is the investment a Restricted Security?

Is the investment a Restricted Security? Yes is not checked Yes No is checked No

Item C.7.

a. Liquidity classification information. For portfolio investments of open-end management investment companies, provide the liquidity classification(s) for each portfolio investment among the following categories as specified in rule 22e-4 [17 CFR 270.22e-4]. For portfolio investments with multiple liquidity classifications, indicate the percentage amount attributable to each classification.

i. Highly Liquid Investments
ii. Moderately Liquid Investments
iii. Less Liquid Investments
iv. Illiquid Investments
Category.
N/A  

b. If attributing multiple classification categories to the holding, indicate which of the three circumstances listed in the Instructions to Item C.7 is applicable.

Instructions to Item C.7 Funds may choose to indicate the percentage amount of a holding attributable to multiple classification categories only in the following circumstances: (1) if portions of the position have differing liquidity features that justify treating the portions separately; (2) if a fund has multiple sub-advisers with differing liquidity views; or (3) if the fund chooses to classify the position through evaluation of how long it would take to liquidate the entire position (rather than basing it on the sizes it would reasonably anticipated trading). In (1) and (2), a fund would classify using the reasonably anticipated trade size for each portion of the position.

Item C.8. Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles (ASC 820, Fair Value Measurement). [1/2/3] Report “N/A” if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient).

Indicate the level within the fair value hierarchy in which the fair value measurements fall pursuant to U.S. Generally Accepted Accounting Principles 7(ASC 820, Fair Value Measurement). [1/2/3] Report "N/A" if the investment does not have a level associated with it (i.e., net asset value used as the practical expedient). 1 is checked 1 2 is not checked 2 3 is not checked 3 N/A is not checked N/A

Item C.9. For debt securities

For debt securities, also provide:

a. Maturity date.
 

b. Coupon.

i. Select the category that most closely reflects the coupon type among the following (fixed, floating, variable, none).
 
ii. Annualized rate.
 
c. Currently in default? [Y/N]Yes is not checked Yes No is not checked No
d. Are there any interest payments in arrears or have any coupon payments been legally deferred by the issuer? [Y/N] Yes is not checked Yes No is not checked No
e. Is any portion of the interest paid in kind? [Y/N] Enter "N" if the interest may be paid in kind but is not actually paid in kind or if the Fund has the option of electing in-kind payment and has elected to be paid in-kind. Yes is not checked Yes No is not checked No

f. For convertible securities, also provide:

i. Mandatory convertible? [Y/N] Yes is not checked Yes No is not checked No
ii. Contingent convertible? [Y/N] Yes is not checked Yes No is not checked No

iii. Description of the reference instrument, including the name of issuer, title of issue, and currency in which denominated, as well as CUSIP of reference instrument, ISIN (if CUSIP is not available), ticker (if CUSIP and ISIN are not available), or other identifier (if CUSIP, ISIN, and ticker are not available).
If other identifier provided, indicate the type of identifier used.

v. Delta (if applicable).
 

Item C.10. For repurchase and reverse repurchase agreements, also provide:

a. Select the category that reflects the transaction (repurchase, reverse repurchase). Select "repurchase agreement" if the Fund is the cash lender and receives collateral. Select "reverse repurchase agreement" if the Fund is the cash borrower and posts collateral. Repurchase is not checked Repurchase Reverse repurchase is not checked Reverse repurchase

b. Counterparty.

i. Cleared by central counterparty? [Y/N] If Y, provide the name of the central counterparty. Yes is not checked Yes No is not checked No

ii. If N, provide the name and LEI (if any) of counterparty.

c. Tri-party? Yes is not checked Yes No is not checked No
d. Repurchase rate.
 
e. Maturity date.
 

f. Provide the following information concerning the securities subject to the repurchase agreement (i.e., collateral). If multiple securities of an issuer are subject to the repurchase agreement, those securities may be aggregated in responding to Items C.10.f.i-iii.

Item C.11. For derivatives, also provide:

Item C.12. Securities lending.

a. Does any amount of this investment represent reinvestment of cash collateral received for loaned securities? Yes is not checked Yes No is checked No
b. Does any portion of this investment represent that is treated as a Fund asset and received for loaned securities? Yes is not checked Yes No is checked No
c. Is any portion of this investment on loan by the Fund? Yes is not checked Yes No is checked No

NPORT-P: Part E: Explanatory Notes (if any)

The Fund may provide any information it believes would be helpful in understanding the information reported in response to any Item of this Form. The Fund may also explain any assumptions that it made in responding to any Item of this Form. To the extent responses relate to a particular Item, provide the Item number(s), as applicable.
Note Item
B.1.a 
Explanatory Notes
Assets and liabilities are reported on a trade date basis, consistent with the MassMutual Funds' financial statements. Differences between N-PORT reported values and the Funds' financial statements may occur due to foreign securities' mark-to-market adjustments, expense adjustments, and other non-material items identified by the fund administrator during the financial statement review process.  
Note Item
B.1.b 
Explanatory Notes
Assets and liabilities are reported on a trade date basis, consistent with the MassMutual Funds' financial statements. Differences between N-PORT reported values and the Funds' financial statements may occur due to foreign securities' mark-to-market adjustments, expense adjustments, and other non-material items identified by the fund administrator during the financial statement review process.  
Note Item
B.1.c 
Explanatory Notes
Assets and liabilities are reported on a trade date basis, consistent with the MassMutual Funds' financial statements. Differences between N-PORT reported values and the Funds' financial statements may occur due to foreign securities' mark-to-market adjustments, expense adjustments, and other non-material items identified by the fund administrator during the financial statement review process.  
Note Item
B.2.d 
Explanatory Notes
Payable amount for investments purchased on a delayed delivery, when issued, or other firm commitment basis generally is determined based on the number of days between trade date and settlement date. Payable amount for purchases of bank loan securities for which the settlement date is unknown also are included. 
Note Item
B.2.f 
Explanatory Notes
Amounts reported include U.S. Dollar cash and the base equivalent of foreign currency balances (identified cost plus unrealized gain/loss). Amounts are derived from the fund's General Ledger and may differ from financial statements due to adjustments made by the fund administrator during the financial statement review process.  
Note Item
B.3.a 
Explanatory Notes
DV01 indicates the estimated change in the price of the security given a one basis point change in the 'yield to worst' or the sensitivity of the security's value to a one basis point parallel shift in the yield curve. For floating rate securities, the value of DV01 is calculated by scaling the Effective Duration by 1/100th. As of Q2 2023, DV01 risk metrics for the currency IDR will be converted to and reported in USD. Starting in Q3 2023, DV01 risk metrics in all currencies will be converted to and reported in USD. For derivatives, when calculating the value of DV01, it is assumed that the volatility will not stay constant given a shift in the yield curve. Accordingly, the DV01 result shows the anticipated move in the present value/market value given a one basis point shift in the yield curve. Risk metrics at the security level are provided by a third-party vendor (ICE). As of the current filing, ICE has gaps in its coverage (e.g., certain CMOs, options on futures, non-U.S. futures). We have attempted to gather missing information from the Funds' subadvisers; however, missing security-level risk metrics may result in non-material errors in portfolio-level calculations.  
Note Item
B.3.b 
Explanatory Notes
DV100 is based on the Effective Duration of the security and is an option-adjusted measure. It represents the average change in a security's market value (price plus accrued interest) given both up and down 100 basis point shifts in the underlying government par yield curve. This calculation incorporates the effect of embedded optionality for corporate bonds and changes in prepayments for mortgage-backed securities. In the event that a bond's currency has no associated government yield curve, the U.S. Treasury curve is used for the calculation. As of Q2 2023, DV100 risk metrics for the currency IDR will be converted to and reported in USD. Starting in Q3 2023, DV100 risk metrics in all currencies will be converted to and reported in USD. Risk metrics at the security level are provided by a third-party vendor (ICE). As of the current filing, ICE has gaps in its coverage (e.g., certain CMOs, options on futures, non-U.S. futures). We have attempted to gather missing information from the Funds' subadvisers; however, missing security-level risk metrics may result in non-material errors in portfolio-level calculations.  
Note Item
B.3.c 
Explanatory Notes
CS01 measures the change in price for a one basis point change in the Option Adjusted Spread (OAS) of the bond. It is calculated by shifting the bond's OAS up and down one basis point and observing the average change from the starting Input Price, holding the term structure of interest rates and volatility assumptions constant. This indicates the sensitivity of price to a change in the risk premium demanded by the market. CS01 is not computed for most derivatives, except for single-name Credit Default Swaps. Since Treasuries are insensitive to changes in credit spread/risk premiums, a spread duration of zero is assumed. Risk metrics at the security level are provided by a third-party vendor (ICE). As of the current filing, ICE has gaps in its coverage (e.g., certain CMOs, options on futures, non-U.S. futures). We have attempted to gather missing information from the Funds' subadvisers; however, missing security-level risk metrics may result in non-material errors in portfolio-level calculations._x000D_  
Note Item
B.4.a.iii 
Explanatory Notes
The market value of securities on loan as calculated by the Lending Agent may differ from the market value of those securities using the fund's approved pricing services. Due to this difference in pricing sources, the aggregate market value of securities on loan for a fund as reported on Form N-PORT may differ from the total value of securities on loan reported in the Notes to Portfolio of Investments in a fund's annual financial statement. 
Note Item
B.4.b.ii 
Explanatory Notes
Beginning in December 2019, the MassMutual Funds began accepting non-cash collateral in the securities lending program. The aggregate value of non-cash collateral reported includes the actual principal amount of that collateral as of the close of business on month-end but the market value is calculated based on the prior day's price. 
Note Item
B.5.a 
Explanatory Notes
Monthly total returns for each share class are calculated by the Funds' Sub-Administrator, State Street Bank. The returns are reported without deducting sales loads and redemption fees. 
Note Item
C.1.a 
Explanatory Notes
TBAs are reported as securities rather than as derivatives. 
Note Item
C.1.d 
Explanatory Notes
Certain derivative investments (e.g., options, futures and swaps), private investments, commercial paper, bank loans, and reverse repurchase agreements do not have a standard industry CUSIP and are assigned a 'dummy' CUSIP number by the Funds' Custodian, State Street Bank. Foreign currency forwards do not have a CUSIP in the Custodian's system. 
Note Item
C.1.e.iii 
Explanatory Notes
Certain derivative investments (e.g., OTC options and swaps), private investments, commercial paper, and reverse repurchase agreements do not have an ISIN, SEDOL, ticker or other industry-recognized identifier. For bank loans, we provide the Bank Loan LNX ID. For foreign currency forwards, we provide the Custodian's trade identification number. For investments for which no standard industry or other identifier is available, we are responding with N/A and a description of 'Additional identifier not available.' 
Note Item
C.4.b 
Explanatory Notes
Issuer type for certain SLM Student Loan Trust asset-backed securities is reported as USGA (U.S. government agency) even though the security may have been issued by Sallie Mae as a private entity. The third-party vendor (ICE) provides the issuer type classification and is unable at this time to differentiate Sallie Mae securities issued prior to or after termination of the entity's federal charter. 
Note Item
C.5.a 
Explanatory Notes
Country codes tagged as N/A indicate that the security is a cross-border supranational/multinational. 
Note Item
C.6 
Explanatory Notes
Restricted securities include any equity or fixed income security acquired in a private offering, or any fixed income security flagged by a third-party vendor as exempt from registration under Rule 144A or Regulation S of the Security Act of 1933. 
Note Item
C.8 
Explanatory Notes
Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Level 1 - Quoted prices (unadjusted) in active markets for identical investments that the Fund can access at the measurement date. Level 1 securities generally include actively traded domestic equity securities and American Depository Receipts, derivatives actively traded on a national securities exchange (such as futures and options), and shares of open-end mutual funds. Level 2 - Other significant observable inputs, including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc. Level 2 securities generally include debt securities such as U.S. Government and agency securities, mortgage-backed and asset-backed securities, municipal obligations, sovereign debt obligations, bank loans, corporate bonds, and securities valued at amortized cost; OTC derivatives such as swaps, options, swaptions, and forward foreign currency exchange contracts; broker-quoted securities; and non-exchange traded equity securities and equity securities traded on foreign exchanges._x000D_ Level 3 - Significant unobservable inputs, including the Funds'/Fund's own assumptions in determining the fair value of investments). Level 3 securities include securities for which prices, spreads, or any other significant inputs are unobservable. Generally, securities whose trading has been suspended or that have been delisted from their primary trading exchange; securities in default or bankruptcy proceedings for which there is no current market quotation; and securities acquired in a non-public offering and for which there is no active market are categorized as Level 3. 
Note Item
C.9.a 
Explanatory Notes
Perpetual bonds held in the MassMutual Funds reflect a maturity date of 2099-12-31. 
Note Item
C.9.b.i 
Explanatory Notes
Instruments are classified as Floating when the coupon rate is determined by a formula that includes an index and margin. Other non-fixed coupon types are mapped as Variable. If an instrument has a fixed coupon rate of 0%, the coupon type will be mapped as None. For fixed-to-float instruments, coupon type will be Variable during the fixed period and Floating after the trigger date. 
Note Item
C.9.f.iii 
Explanatory Notes
Certain securities flagged as both mandatory convertible and contingent convertible by the third-party vendor are redeemable or become convertible upon occurrence of some condition or event, e.g., default, tax change, or other trigger event. Related convertible data (description of reference instrument, conversion ratio, delta) is reported as N/A because it is unknown when or if the event will occur. 
Note Item
C.9.f.iv 
Explanatory Notes
Certain securities flagged as both mandatory convertible and contingent convertible by the third-party vendor are redeemable or become convertible upon occurrence of some condition or event, e.g., default, tax change, or other trigger event. Related convertible data (description of reference instrument, conversion ratio, delta) is reported as N/A because it is unknown when or if the event will occur. 
Note Item
C.11.c.iii.3 
Explanatory Notes
For certain unlisted warrants, information regarding exercise terms and underlying reference instruments are not available at this time. 
Note Item
C.11.c.iv 
Explanatory Notes
For certain unlisted warrants, information regarding exercise terms and underlying reference instruments are not available at this time. 
Note Item
C.11.c.v 
Explanatory Notes
For certain unlisted warrants, information regarding exercise terms and underlying reference instruments are not available at this time. 
Note Item
C.11.e.i 
Explanatory Notes
Certain currency forward contracts or options on currency forward contracts have been executed by counterparties for currency CNH, China's offshore Yuan traded outside mainland China. Our filing reflects currency code CNY, the Yuan traded within mainland China. Since CNY and CNH both refer to the Chinese currency and CNH is not an option for the filing, we have substituted CNY for CNH, as needed._x000D_  
Note Item
C.11.e.ii 
Explanatory Notes
Certain currency forward contracts or options on currency forward contracts have been executed by counterparties for currency CNH, China's offshore Yuan traded outside mainland China. Our filing reflects currency code CNY, the Yuan traded within mainland China. Since CNY and CNH both refer to the Chinese currency and CNH is not an option for the filing, we have substituted CNY for CNH, as needed._x000D_  
Note Item
C.12.c 
Explanatory Notes
The market value of securities on loan as calculated by the Lending Agent may differ from the market value of those securities using the fund's approved pricing services. Due to this difference in pricing sources, the aggregate market value of securities on loan for a fund as reported on Form N-PORT may differ from the total value of securities on loan reported in the Notes to Portfolio of Investments in a fund's annual financial statement. 

NPORT-P: Signatures

The Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Registrant:
MML SERIES INVESTMENT FUND 
By(Signature):
/s/ Renee Hitchcock 
Name:
Renee Hitchcock 
Title:
Treasurer and CFO 
Date:
2023-11-28 

Documents