Supplement to the

Fidelity^® Fund

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information found in the “Fund Summary” section under the “Fee Table” heading.

Annual Operating Expenses

(expenses that you pay each year as a % of the value of your investment)

Management fee	0.42% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.00% B
Total annual operating expenses	0.42%

^A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.14% was previously charged under the services agreements.

^B Adjusted to reflect current fees.

1 year	$ 43
3 years	$ 135
5 years	$ 235
10 years	$ 530

The following information replaces similar information found in the “Fund Management” section under the “Advisory Fee(s)” heading.

Each class of the fund pays a management fee to the Adviser.

The management fee is calculated and paid to the Adviser every month.

When determining a class’s management fee, a mandate rate is calculated based on the monthly average net assets of a group of funds advised by FMR within a designated asset class. A discount rate is subtracted from the mandate rate once the fund’s monthly average net assets reach a certain level. The mandate rate and discount rate may vary by class.

The annual management fee rate for the class of shares of the fund offered through this prospectus is the lesser of (1) the class’s mandate rate reduced by the class’s discount rate (if applicable) or (2) 0.42%. One‑twelfth of the management fee rate for a class is applied to the average net assets of the class for the month, giving a dollar amount which is the management fee for the class for that month.

A different management fee rate may be applicable to each class of the fund. The difference between classes is the result of separate arrangements for class-level services and/or waivers of certain expenses. It is not the result of any difference in advisory or custodial fees or other expenses related to the management of the fund’s assets, which do not vary by class.

FID-PSTK-0324-122 1.712065.122 March 1, 2024

Supplement to the

Fidelity^® Fund

Class K

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information found in the “Fund Summary” section under the “Fee Table” heading.

Annual Operating Expenses

(expenses that you pay each year as a % of the value of your investment)

Management fee	0.34% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.00% B
Total annual operating expenses	0.34%

^A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.06% was previously charged under the services agreements.

^B Adjusted to reflect current fees.

1 year	$ 35
3 years	$ 109
5 years	$ 191
10 years	$ 431

The following information replaces similar information found in the “Fund Management” section under the “Advisory Fee(s)” heading.

Each class of the fund pays a management fee to the Adviser.

The management fee is calculated and paid to the Adviser every month.

When determining a class’s management fee, a mandate rate is calculated based on the monthly average net assets of a group of funds advised by FMR within a designated asset class. A discount rate is subtracted from the mandate rate once the fund’s monthly average net assets reach a certain level. The mandate rate and discount rate may vary by class.

The annual management fee rate for the class of shares of the fund offered through this prospectus is the lesser of (1) the class’s mandate rate reduced by the class’s discount rate (if applicable) or (2) 0.34%. One-twelfth of the management fee rate for a class is applied to the average net assets of the class for the month, giving a dollar amount which is the management fee for the class for that month.

A different management fee rate may be applicable to each class of the fund. The difference between classes is the result of separate arrangements for class-level services and/or waivers of certain expenses. It is not the result of any difference in advisory or custodial fees or other expenses related to the management of the fund’s assets, which do not vary by class.

FID-K-PSTK-0324-110 1.900379.110 March 1, 2024

Supplement to the

Fidelity^® Growth Discovery Fund

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a basic fee rate that may vary by class (subject to a performance adjustment). The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information found in the “Fund Summary” section under the “Fee Table” heading.

Annual Operating Expenses

(expenses that you pay each year as a % of the value of your investment)

Management fee (fluctuates based on the fund’s performance relative to a securities market index)	0.65% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.01% B
Total annual operating expenses	0.66%

^A The management fee comprises a basic fee, which may vary by class, that is adjusted up or down (subject to a maximum rate) based on the performance of the fund or a designated class of the fund relative to that of the Russell 3000^® Growth Index. The basic fee covers administrative services previously provided under separate services agreements with the fund, for which 0.17% was previously charged under the services agreements. Please see “Fund Services - Fund Management - Advisory Fee(s)” for additional information.

^B Adjusted to reflect current fees.

1 year	$ 67
3 years	$ 211
5 years	$ 368
10 years	$ 822

The following information replaces similar information found in the “Fund Management” section under the “Advisory Fee(s)” heading.

Each class of the fund pays a management fee to the Adviser.

The management fee is calculated and paid to the Adviser every month.

The management fee is determined by calculating a basic fee and then applying a performance adjustment.

When determining a class’s basic fee, a mandate rate is calculated based on the monthly average net assets of a group of funds advised by FMR within a designated asset class. A discount rate is subtracted from the mandate rate once the fund’s monthly average net assets reach a certain level. The mandate rate and discount rate may vary by class.

The annual basic fee rate for the class of shares of the fund offered through this prospectus is the lesser of (1) the class’s mandate rate reduced by the class’s discount rate (if applicable) or (2) 0.66%. One‑twelfth of the basic fee rate for a class is applied to the average net assets of the class for the month, giving a dollar amount which is the basic fee for the class for that month.

The performance adjustment rate is calculated monthly by comparing over the performance period the fund’s performance to that of the performance adjustment index listed below.

Fund	Performance Adjustment Index
Fidelity® Growth Discovery Fund	Russell 3000® Growth Index

For the purposes of calculating the performance adjustment for the fund, the fund’s investment performance will be based on the performance of the class of shares of the fund offered through this prospectus.

To the extent that other classes of the fund have higher expenses, this could result in those classes bearing a larger positive performance adjustment and smaller negative performance adjustment than would be the case if each class’s own performance were considered.

The performance period is the most recent 36 month period.

The maximum annualized performance adjustment rate is ±0.20% of the fund’s average net assets over the performance period. The performance adjustment rate is divided by twelve and multiplied by the fund’s average net assets over the performance period, and the resulting dollar amount is then proportionately added to or subtracted from a class’s basic fee.

A different management fee rate may be applicable to each class of the fund. The difference between classes is the result of separate arrangements for class-level services and/or waivers of certain expenses. It is not the result of any difference in advisory or custodial fees or other expenses related to the management of the fund’s assets, which do not vary by class.

CII-PSTK-0324-127 1.482432.127 March 1, 2024

Supplement to the

Fidelity^® Growth Discovery Fund

Class K

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a basic fee rate that may vary by class (subject to a performance adjustment). The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information found in the “Fund Summary” section under the “Fee Table” heading.

Annual Operating Expenses

(expenses that you pay each year as a % of the value of your investment)

Management fee (fluctuates based on the fund’s performance relative to a securities market index)	0.56% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.01% B
Total annual operating expenses	0.57%

^A The management fee comprises a basic fee, which may vary by class, that is adjusted up or down (subject to a maximum rate) based on the performance of the fund or a designated class of the fund relative to that of the Russell 3000^® Growth Index. The basic fee covers administrative services previously provided under separate services agreements with the fund, for which 0.07% was previously charged under the services agreements. Please see “Fund Services - Fund Management - Advisory Fee(s)” for additional information.

^B Adjusted to reflect current fees.

1 year	$ 58
3 years	$ 183
5 years	$ 318
10 years	$ 714

The following information replaces similar information found in the “Fund Management” section under the “Advisory Fee(s)” heading.

Each class of the fund pays a management fee to the Adviser.

The management fee is calculated and paid to the Adviser every month.

The management fee is determined by calculating a basic fee and then applying a performance adjustment.

When determining a class’s basic fee, a mandate rate is calculated based on the monthly average net assets of a group of funds advised by FMR within a designated asset class. A discount rate is subtracted from the mandate rate once the fund’s monthly average net assets reach a certain level. The mandate rate and discount rate may vary by class.

The annual basic fee rate for the class of shares of the fund offered through this prospectus is the lesser of (1) the class’s mandate rate reduced by the class’s discount rate (if applicable) or (2) 0.56%. One‑twelfth of the basic fee rate for a class is applied to the average net assets of the class for the month, giving a dollar amount which is the basic fee for the class for that month.

The performance adjustment rate is calculated monthly by comparing over the performance period the fund’s performance to that of the performance adjustment index listed below.

Fund	Performance Adjustment Index
Fidelity® Growth Discovery Fund	Russell 3000® Growth Index

For the purposes of calculating the performance adjustment for the fund, the fund’s investment performance will be based on the performance of Fidelity^® Growth Discovery Fund, a class of shares of the fund that is not offered through this prospectus.

To the extent that other classes of the fund have higher expenses, this could result in those classes bearing a larger positive performance adjustment and smaller negative performance adjustment than would be the case if each class’s own performance were considered.

The performance period is the most recent 36 month period.

The maximum annualized performance adjustment rate is ±0.20% of the fund’s average net assets over the performance period. The performance adjustment rate is divided by twelve and multiplied by the fund’s average net assets over the performance period, and the resulting dollar amount is then proportionately added to or subtracted from a class’s basic fee.

A different management fee rate may be applicable to each class of the fund. The difference between classes is the result of separate arrangements for class-level services and/or waivers of certain expenses. It is not the result of any difference in advisory or custodial fees or other expenses related to the management of the fund’s assets, which do not vary by class.

CII-K-PSTK-0324-109 1.900384.109 March 1, 2024

Supplement to the

Fidelity^® Mega Cap Stock Fund

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information found in the “Fund Summary” section under the “Fee Table” heading.

Annual Operating Expenses

(expenses that you pay each year as a % of the value of your investment)

Management fee	0.57% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.02% B
Total annual operating expenses	0.59%

^A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.18% was previously charged under the services agreements.

^B Adjusted to reflect current fees.

1 year	$ 60
3 years	$ 189
5 years	$ 329
10 years	$ 738

The following information replaces similar information found in the “Fund Management” section under the “Advisory Fee(s)” heading.

Each class of the fund pays a management fee to the Adviser.

The management fee is calculated and paid to the Adviser every month.

When determining a class’s management fee, a mandate rate is calculated based on the monthly average net assets of a group of funds advised by FMR within a designated asset class. A discount rate is subtracted from the mandate rate once the fund’s monthly average net assets reach a certain level. The mandate rate and discount rate may vary by class.

The annual management fee rate for the class of shares of the fund offered through this prospectus is the lesser of (1) the class’s mandate rate reduced by the class’s discount rate (if applicable) or (2) 0.57%. One‑twelfth of the management fee rate for a class is applied to the average net assets of the class for the month, giving a dollar amount which is the management fee for the class for that month.

A different management fee rate may be applicable to each class of the fund. The difference between classes is the result of separate arrangements for class-level services and/or waivers of certain expenses. It is not the result of any difference in advisory or custodial fees or other expenses related to the management of the fund’s assets, which do not vary by class.

GII-PSTK-0324-122 1.734047.122 March 1, 2024

Supplement to the

Fidelity^® Mega Cap Stock Fund

Class A, Class M, Class C, Class I, and Class Z

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information found in the “Fund Summary” section under the “Fee Table” heading.

Annual Operating Expenses

(expenses that you pay each year as a % of the value of your investment)

	Class A	Class M	Class C	Class I	Class Z
Management fee	0.60% A,B	0.60% A,B	0.62% A,B	0.58% A,B	0.46% A,B
Distribution and/or Service (12b‑1) fees	0.25%	0.50%	1.00%	None	None
Other expenses	0.02% B	0.02% B	0.02% B	0.02% B	0.02% B
Total annual operating expenses	0.87%	1.12%	1.64%	0.60%	0.48%

^A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.20% for Class A, 0.21% for Class M, 0.23% for Class C, 0.18% for Class I, and 0.07% for Class Z was previously charged under the services agreements.

^B Adjusted to reflect current fees.

	Class A		Class M		Class C		Class I		Class Z
	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares	Sell All Shares	Hold Shares
1 year	$ 659	$ 659	$ 460	$ 460	$ 267	$ 167	$ 61	$ 61	$ 49	$ 49
3 years	$ 837	$ 837	$ 694	$ 694	$ 517	$ 517	$ 192	$ 192	$ 154	$ 154
5 years	$ 1,029	$ 1,029	$ 945	$ 945	$ 892	$ 892	$ 335	$ 335	$ 269	$ 269
10 years	$ 1,586	$ 1,586	$ 1,665	$ 1,665	$ 1,738	$ 1,738	$ 750	$ 750	$ 604	$ 604

The following information replaces similar information found in the “Fund Management” section under the “Advisory Fee(s)” heading.

Each class of the fund pays a management fee to the Adviser.

The management fee is calculated and paid to the Adviser every month.

When determining a class’s management fee, a mandate rate is calculated based on the monthly average net assets of a group of funds advised by FMR within a designated asset class. A discount rate is subtracted from the mandate rate once the fund’s monthly average net assets reach a certain level. The mandate rate and discount rate may vary by class.

The annual management fee rate for each class of shares of the fund offered through this prospectus is the lesser of (1) the class’s mandate rate reduced by the class’s discount rate (if applicable) or (2) 0.60% for Class A, 0.60% for Class M, 0.62% for Class C, 0.58% for Class I, and 0.46% for Class Z. One‑twelfth of the management fee rate for a class is applied to the average net assets of the class for the month, giving a dollar amount which is the management fee for the class for that month.

A different management fee rate may be applicable to each class of the fund. The difference between classes is the result of separate arrangements for class-level services and/or waivers of certain expenses. It is not the result of any difference in advisory or custodial fees or other expenses related to the management of the fund’s assets, which do not vary by class.

AGII-PSTK-0324-123 1.885801.123 March 1, 2024

Supplement to the

Fidelity® Fund, Fidelity® Growth Discovery Fund, and Fidelity® Mega Cap Stock Fund

August 29, 2023

STATEMENT OF ADDITIONAL INFORMATION

Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates either a management fee rate that may vary by class or a basic fee rate that may vary by class (subject to a performance adjustment). The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.

The following information replaces similar information found in the “Management Contracts” section.

Management-Related Expenses. In addition to the management fee payable to FMR, and the costs associated with securities lending, as applicable, a fund or each class thereof, as applicable, pays all of its expenses that are not assumed by those parties. A fund pays for the typesetting, printing, and mailing of its proxy materials to shareholders, legal expenses, and the fees of the custodian, auditor, and Independent Trustees. Other expenses paid by a fund include interest, taxes, brokerage commissions, fees and expenses associated with the fund’s securities lending program, if applicable, the fund’s proportionate share of insurance premiums and Investment Company Institute dues, and the costs of registering shares under federal securities laws and making necessary filings under state securities laws. A fund is also liable for such non-recurring expenses as may arise, including costs of any litigation to which the fund may be a party, and any obligation it may have to indemnify its officers and Trustees with respect to litigation.

Management Fees.

For the services of FMR under each of Fidelity® Fund’s and Fidelity® Mega Cap Stock Fund’s management contract, each class of each fund pays FMR a monthly management fee.

For the services of FMR under Fidelity® Growth Discovery Fund’s management contract, each class of the fund pays FMR a monthly management fee. The management fee has two components: (i) a basic fee and (ii) a performance adjustment.

For each fund, a mandate rate is calculated based on the monthly average net assets of a group of funds advised by FMR within a designated asset class. This rate may vary by share class.

For each fund, the mandate rate is calculated on a cumulative basis pursuant to the following schedule:

MANDATE RATE SCHEDULE

Average Designated Asset Class Assets	Retail Class  Annualized Rate
First $400 billion	0.750%
Next $400 billion	0.670%
Next $400 billion	0.610%
Over $1,200 billion	0.580%

For each fund, a discount percentage is calculated based on the monthly average net assets of a broader group of funds advised by FMR representing multiple asset classes and the monthly average net assets of the fund. After determination of the applicable tier bound level in the following schedule, the discount percentage for a fund is calculated on a cumulative basis pursuant to the schedule. For each fund, the discount rate for a class is the class’s mandate rate multiplied by the discount percentage.

DISCOUNT PERCENTAGE SCHEDULE

Average Group Assets Tier Bounds		% Discount for Average Incremental Fund Assets
Lower	Upper	First $1B	Next $19B	Next $10B	Over $30B
0	<$1 trillion	0%	3.0%	5.0%	6.5%
1	<1.5	0%	4.0%	6.0%	7.5%
1.5	<1.9	0%	5.0%	7.0%	8.5%
1.9	<2.2	0%	6.0%	8.0%	9.5%
2.2	<2.5	0%	7.0%	9.0%	10.5%
2.5	<2.8	0%	8.0%	10.0%	11.5%
2.8	<3.1	0%	9.0%	11.0%	12.5%
3.1	Above 3.1	0%	10.0%	12.0%	13.5%

For Fidelity® Fund and Fidelity® Mega Cap Stock Fund, the annual management fee rate for the class of shares of each fund offered through this SAI is the lesser of (1) the class’s mandate rate reduced by the class’s discount rate or (2) the amount set forth in the following table.

Fund/Class	Maximum Management Fee Rate
Fidelity® Fund/Fidelity® Fund	0.42%
Fidelity® Mega Cap Stock Fund/Fidelity® Mega Cap Stock Fund	0.57%

One-twelfth of the management fee rate is applied to the class’s average net assets for the month, giving a dollar amount which is the management fee for the class for that month.

For Fidelity® Growth Discovery Fund, the annual basic fee rate for the class of shares of the fund offered through this SAI is the lesser of (1) the class’s mandate rate reduced by the class’s discount rate or (2) the amount set forth in the following table:

Fund/Class	Maximum Basic Fee Rate
Fidelity® Growth Discovery Fund/Fidelity® Growth Discovery Fund	0.66%

One-twelfth of the basic fee rate is applied to the class’s average net assets for the month, giving a dollar amount which is the basic fee for the class for that month.

Computing the Performance Adjustment. The basic fee for the following fund is subject to upward or downward adjustment, depending upon whether, and to what extent, the fund’s investment performance for the performance period exceeds, or is exceeded by, the record of the designated index over the same period. The performance period consists of the most recent month plus the previous 35 months. The performance comparison is made at the end of each month.

Fund		Performance Adjustment Index
Fidelity® Growth Discovery Fund		Russell 3000® Growth Index

If the Trustees determine that another index is appropriate for Fidelity® Growth Discovery Fund, they may designate a successor index to be substituted, when permitted by applicable law.

For the purposes of calculating the performance adjustment for Fidelity® Growth Discovery Fund, the fund’s investment performance will be based on the performance of the class of shares offered through this SAI. To the extent that other classes of Fidelity® Growth Discovery Fund have higher expenses, this could result in those classes bearing a larger positive performance adjustment and smaller negative performance adjustment than would be the case if each class’s own performance were considered.

For Fidelity® Growth Discovery Fund, each percentage point of difference, calculated to the nearest 0.01% (up to a maximum difference of ±10.00), is multiplied by a performance adjustment rate of 0.02%. The maximum annualized performance adjustment rate is ±0.20% of a fund’s average net assets over the performance period.

One twelfth (1/12) of this rate is then applied to the fund’s average net assets over the performance period, giving a dollar amount which will be proportionately added to (or subtracted from) a class’s basic fee.

The performance of a fund or class, as applicable, is calculated based on change in NAV. For purposes of calculating the performance adjustment, any dividends or capital gain distributions paid by the fund or class are treated as if reinvested in that fund’s or class’s shares at the NAV as of the record date for payment.

The record of an index is based on change in value and is adjusted for any cash distributions from the companies whose securities compose the index. Because the adjustment to the basic fee is based on a fund’s performance compared to the investment record of the index, the controlling factor is not whether the fund’s performance is up or down per se, but whether it is up or down more or less than the record of the designated performance adjustment index. Moreover, the comparative investment performance of the fund is based solely on the relevant performance period without regard to the cumulative performance over a longer or shorter period of time.

A different management fee rate may be applicable to each class of a fund. The difference between classes is the result of separate arrangements for class-level services and/or waivers of certain expenses. It is not the result of any difference in advisory or custodial fees or other expenses related to the management of a fund’s assets, which do not vary by class.

The following information replaces similar information found in the “Transfer and Service Agent Agreements” section.

TRANSFER AND SERVICE AGENT SERVICES

For purposes of the following “Transfer and Service Agent Services” discussion, the term “shares” (as it relates to the funds) means the one class of shares of a fund offered through the prospectus to which this SAI relates.

Fidelity Investments Institutional Operations Company LLC (FIIOC), an affiliate of FMR, which is located at 245 Summer Street, Boston, Massachusetts 02210 (or an agent, including an affiliate), performs transfer agency services under the terms of each fund’s management contract.

Prior to March 1, 2024, each fund or class, as applicable, bore the cost of transfer agency services under a separate agreement covering such services.

FIIOC may collect fees charged in connection with providing certain types of services such as exchanges, closing out fund balances, checkwriting, wire transactions, and providing historical account research, as applicable.

FIIOC bears the expense of typesetting, printing, and mailing prospectuses, statements of additional information, and all other reports, notices, and statements to existing shareholders, with the exception of proxy statements.

Fund shares may be owned by intermediaries for the benefit of their customers. In those instances, a fund may not maintain an account for shareholders, and some or all of the recordkeeping services for these accounts may be performed by third parties. FIIOC or an affiliate may make payments to intermediaries (including affiliates of FIIOC) for recordkeeping and other services.

Retirement plans may also hold fund shares in the name of the plan or its trustee, rather than the plan participant. In situations where FIIOC or an affiliate does not provide recordkeeping services, plan recordkeepers, who may have affiliated financial intermediaries who sell shares of the funds, may, upon direction, be paid for providing recordkeeping services to plan participants. Payments may also be made, upon direction, for other plan expenses. FIIOC may also pay an affiliate for providing services that otherwise would have been performed by FIIOC.

In certain situations where FIIOC or an affiliate provides recordkeeping services to a retirement plan, payments may be made to pay for plan expenses. The amount of such payments may be based on investments in particular Fidelity® funds, or may be fixed for a given period of time. Upon direction, payments may be made to plan sponsors, or at the direction of plan sponsors, third parties, for expenses incurred in connection with the plan. FIIOC may also pay an affiliate for providing services that otherwise would have been performed by FIIOC.

Fidelity Service Company, Inc. (FSC), an affiliate of FMR (or an agent, including an affiliate), calculates the NAV and dividends for shares, maintains each fund’s portfolio and general accounting records, and administers each fund’s securities lending program under the terms of each fund’s management contract.

Prior to March 1, 2024, each fund bore the cost of pricing and bookkeeping services under a separate agreement covering such services.

Effective March 1, 2024, each fund’s sub-advisory agreements with FMR Investment Management (UK) Limited, Fidelity Management & Research (Hong Kong) Limited, and Fidelity Management & Research (Japan) Limited were amended. The following information supplements similar information found in the “Management Contracts” section.

Under the terms of the sub-advisory agreements, FMR pays each sub-adviser monthly fees equal to 110% of the sub-adviser’s costs for providing sub-advisory services.

HST-SSTK-0324-124 1.798959.124 March 1, 2024

Supplement to the

Fidelity® Mega Cap Stock Fund

Class A, Class M, Class C, Class I, and Class Z

August 29, 2023

STATEMENT OF ADDITIONAL INFORMATION

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a basic fee rate that may vary by class (subject to a performance adjustment). The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information found in the “Management Contract” section.

Management-Related Expenses. In addition to the management fee payable to FMR, and the costs associated with securities lending, as applicable, the fund or each class thereof, as applicable, pays all of its expenses that are not assumed by those parties. The fund pays for the typesetting, printing, and mailing of its proxy materials to shareholders, legal expenses, and the fees of the custodian, auditor, and Independent Trustees. Other expenses paid by the fund include interest, taxes, brokerage commissions, fees and expenses associated with the fund’s securities lending program, if applicable, the fund’s proportionate share of insurance premiums and Investment Company Institute dues, and the costs of registering shares under federal securities laws and making necessary filings under state securities laws. The fund is also liable for such non-recurring expenses as may arise, including costs of any litigation to which the fund may be a party, and any obligation it may have to indemnify its officers and Trustees with respect to litigation.

Management Fee.

For the services of FMR under the fund’s management contract, each class of the fund pays FMR a monthly management fee.

For the fund, a mandate rate is calculated based on the monthly average net assets of a group of funds advised by FMR within a designated asset class. This rate may vary by share class.

The mandate rate is calculated on a cumulative basis pursuant to the following schedule:

MANDATE RATE SCHEDULE

Average Designated Asset Class Assets	Class A, Class M, Class C, and Class I Annualized Rate	Class Z Annualized Rate
First $400 billion	0.770%	0.650%
Next $400 billion	0.710%	0.580%
Next $400 billion	0.680%	0.550%
Over $1,200 billion	0.660%	0.540%

For the fund, a discount percentage is calculated based on the monthly average net assets of a broader group of funds advised by FMR representing multiple asset classes and the monthly average net assets of the fund. After determination of the applicable tier bound level in the following schedule, the discount percentage for the fund is calculated on a cumulative basis pursuant to the schedule. For the fund, the discount rate for a class is the class’s mandate rate multiplied by the discount percentage.

DISCOUNT PERCENTAGE SCHEDULE

Average Group Assets Tier Bounds		% Discount for Average Incremental Fund Assets
Lower	Upper	First $1B	Next $19B	Next $10B	Over $30B
0	<$1 trillion	0%	3.0%	5.0%	6.5%
1	<1.5	0%	4.0%	6.0%	7.5%
1.5	<1.9	0%	5.0%	7.0%	8.5%
1.9	<2.2	0%	6.0%	8.0%	9.5%
2.2	<2.5	0%	7.0%	9.0%	10.5%
2.5	<2.8	0%	8.0%	10.0%	11.5%
2.8	<3.1	0%	9.0%	11.0%	12.5%
3.1	Above 3.1	0%	10.0%	12.0%	13.5%

The annual management fee rate for each class of shares of the fund offered through this SAI is the lesser of (1) the class’s mandate rate reduced by the class’s discount rate or (2) the amount set forth in the following table:

Fund/Class	Maximum Management Fee Rate
Fidelity Advisor® Mega Cap Stock Fund/Class A	0.60%
Fidelity Advisor® Mega Cap Stock Fund/Class M	0.60%
Fidelity Advisor® Mega Cap Stock Fund/Class C	0.62%
Fidelity Advisor® Mega Cap Stock Fund/Class I	0.58%
Fidelity Advisor® Mega Cap Stock Fund/Class Z	0.46%

One-twelfth of the management fee rate is applied to the class’s average net assets for the month, giving a dollar amount which is the management fee for the class for that month.

A different management fee rate may be applicable to each class of the fund. The difference between classes is the result of separate arrangements for class-level services and/or waivers of certain expenses. It is not the result of any difference in advisory or custodial fees or other expenses related to the management of the fund’s assets, which do not vary by class.

The following information replaces similar information found in the “Transfer and Service Agent Agreements” section.

TRANSFER AND SERVICE AGENT SERVICES

Fidelity Investments Institutional Operations Company LLC (FIIOC), an affiliate of FMR, which is located at 245 Summer Street, Boston, Massachusetts 02210 (or an agent, including an affiliate), performs transfer agency services under the terms of the fund’s management contract.

Prior to March 1, 2024, the fund or class, as applicable, bore the cost of transfer agency services under a separate agreement covering such services.

FIIOC may collect fees charged in connection with providing certain types of services such as exchanges, closing out fund balances, checkwriting, wire transactions, and providing historical account research, as applicable.

FIIOC bears the expense of typesetting, printing, and mailing prospectuses, statements of additional information, and all other reports, notices, and statements to existing shareholders, with the exception of proxy statements.

Fund shares may be owned by intermediaries for the benefit of their customers. In those instances, a fund may not maintain an account for shareholders, and some or all of the recordkeeping and/or administrative services for these accounts may be performed by intermediaries. FIIOC or an affiliate may make payments out of its own resources to intermediaries (including affiliates of FIIOC) for recordkeeping services.

Retirement plans may also hold fund shares in the name of the plan or its trustee, rather than the plan participant. In situations where FIIOC or an affiliate does not provide recordkeeping services, plan recordkeepers, who may have affiliated financial intermediaries who sell shares of the fund, may, upon direction, be paid for providing recordkeeping services to plan participants. Payments may also be made, upon direction, for other plan expenses. FIIOC may also pay an affiliate for providing services that otherwise would have been performed by FIIOC.

FIIOC or an affiliate may make networking payments out of its own resources to intermediaries who perform transactions for the fund through the National Securities Clearing Corporation (NSCC). NSCC, a wholly owned subsidiary of The Depository Trust & Clearing Corporation, provides centralized clearance, settlement, and information services for mutual funds and other financial services companies.

Fidelity Service Company, Inc. (FSC), an affiliate of FMR (or an agent, including an affiliate), calculates the NAV and dividends for shares, maintains the fund’s portfolio and general accounting records, and administers the fund’s securities lending program under the terms of the fund’s management contract.

Prior to March 1, 2024, the fund bore the cost of pricing and bookkeeping services under a separate agreement covering such services.

Effective March 1, 2024, the fund’s sub-advisory agreements with FMR Investment Management (UK) Limited, Fidelity Management & Research (Hong Kong) Limited, and Fidelity Management & Research (Japan) Limited were amended. The following information supplements similar information found in the “Management Contract” section.

Under the terms of the sub-advisory agreements, FMR pays each sub-adviser monthly fees equal to 110% of the sub-adviser’s costs for providing sub-advisory services.

AGII-AGIII-SSTK-0324-112
1.881212.112	March 1, 2024

Supplement to the

Fidelity® Fund and Fidelity® Growth Discovery Fund

Class K

August 29, 2023

STATEMENT OF ADDITIONAL INFORMATION

Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates either a management fee rate that may vary by class or a basic fee rate that may vary by class (subject to a performance adjustment). The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.

The following information replaces similar information found in the “Management Contracts” section.

Management-Related Expenses. In addition to the management fee payable to FMR, and the costs associated with securities lending, as applicable, a fund or each class thereof, as applicable, pays all of its expenses that are not assumed by those parties. A fund pays for the typesetting, printing, and mailing of its proxy materials to shareholders, legal expenses, and the fees of the custodian, auditor, and Independent Trustees. Other expenses paid by a fund include interest, taxes, brokerage commissions, fees and expenses associated with the fund’s securities lending program, if applicable, the fund’s proportionate share of insurance premiums and Investment Company Institute dues, and the costs of registering shares under federal securities laws and making necessary filings under state securities laws. A fund is also liable for such non-recurring expenses as may arise, including costs of any litigation to which the fund may be a party, and any obligation it may have to indemnify its officers and Trustees with respect to litigation.

Management Fees.

For the services of FMR under Fidelity® Fund’s management contract, each class of the fund pays FMR a monthly management fee.

For the services of FMR under Fidelity® Growth Discovery Fund’s management contract, each class of the fund pays FMR a monthly management fee. The management fee has two components: (i) a basic fee and (ii) a performance adjustment.

For each fund, a mandate rate is calculated based on the monthly average net assets of a group of funds advised by FMR within a designated asset class. This rate may vary by share class.

For each fund, the mandate rate is calculated on a cumulative basis pursuant to the following schedule:

MANDATE RATE SCHEDULE

Average Designated Asset Class Assets	Class K Annualized Rate
First $400 billion	0.650%
Next $400 billion	0.580%
Next $400 billion	0.550%
Over $1,200 billion	0.540%

For each fund, a discount percentage is calculated based on the monthly average net assets of a broader group of funds advised by FMR representing multiple asset classes and the monthly average net assets of the fund. After determination of the applicable tier bound level in the following schedule, the discount percentage for a fund is calculated on a cumulative basis pursuant to the schedule. For each fund, the discount rate for a class is the class’s mandate rate multiplied by the discount percentage.

DISCOUNT PERCENTAGE SCHEDULE

Average Group Assets Tier Bounds		% Discount for Average Incremental Fund Assets
Lower	Upper	First $1B	Next $19B	Next $10B	Over $30B
0	<$1 trillion	0%	3.0%	5.0%	6.5%
1	<1.5	0%	4.0%	6.0%	7.5%
1.5	<1.9	0%	5.0%	7.0%	8.5%
1.9	<2.2	0%	6.0%	8.0%	9.5%
2.2	<2.5	0%	7.0%	9.0%	10.5%
2.5	<2.8	0%	8.0%	10.0%	11.5%
2.8	<3.1	0%	9.0%	11.0%	12.5%
3.1	Above 3.1	0%	10.0%	12.0%	13.5%

For Fidelity® Fund, the annual management fee rate for the class of shares of the fund offered through this SAI is the lesser of (1) the class’s mandate rate reduced by the class’s discount rate or (2) the amount set forth in the following table:

Fund/Class	Maximum Management Fee Rate
Fidelity® Fund/Class K	0.34%

One-twelfth of the management fee rate is applied to the class’s average net assets for the month, giving a dollar amount which is the management fee for the class for that month.

For Fidelity® Growth Discovery Fund, the annual basic fee rate for the class of shares of the fund offered through this SAI is the lesser of (1) the class’s mandate rate reduced by the class’s discount rate or (2) the amount set forth in the following table:

Fund/Class	Maximum Basic Fee Rate
Fidelity® Growth Discovery Fund/ Class K	0.56%

One-twelfth of the basic fee rate is applied to the class’s average net assets for the month, giving a dollar amount which is the basic fee for the class for that month.

Computing the Performance Adjustment. The basic fee for the following fund is subject to upward or downward adjustment, depending upon whether, and to what extent, the fund’s investment performance for the performance period exceeds, or is exceeded by, the record of the designated index over the same period. The performance period consists of the most recent month plus the previous 35 months. The performance comparison is made at the end of each month.

Fund	Performance Adjustment Index
Fidelity® Growth Discovery Fund	Russell 3000® Growth Index

If the Trustees determine that another index is appropriate for Fidelity® Growth Discovery Fund, they may designate a successor index to be substituted, when permitted by applicable law.

For the purposes of calculating the performance adjustment for Fidelity® Growth Discovery Fund, the fund’s investment performance will be based on the performance of Fidelity® Growth Discovery Fund, a class of shares not offered through this SAI. To the extent that other classes of Fidelity® Growth Discovery Fund have higher expenses, this could result in those classes bearing a larger positive performance adjustment and smaller negative performance adjustment than would be the case if each class’s own performance were considered.

For Fidelity® Growth Discovery Fund, each percentage point of difference, calculated to the nearest 0.01% (up to a maximum difference of ±10.00), is multiplied by a performance adjustment rate of 0.02%. The maximum annualized performance adjustment rate is ±0.20% of a fund’s average net assets over the performance period.

One twelfth (1/12) of this rate is then applied to the fund’s average net assets over the performance period, giving a dollar amount which will be proportionately added to (or subtracted from) a class’s basic fee.

The performance of a fund or class, as applicable, is calculated based on change in NAV. For purposes of calculating the performance adjustment, any dividends or capital gain distributions paid by the fund or class are treated as if reinvested in that fund’s or class’s shares at the NAV as of the record date for payment.

The record of an index is based on change in value and is adjusted for any cash distributions from the companies whose securities compose the index. Because the adjustment to the basic fee is based on a fund’s performance compared to the investment record of the index, the controlling factor is not whether the fund’s performance is up or down per se, but whether it is up or down more or less than the record of the designated performance adjustment index. Moreover, the comparative investment performance of the fund is based solely on the relevant performance period without regard to the cumulative performance over a longer or shorter period of time.

A different management fee rate may be applicable to each class of a fund. The difference between classes is the result of separate arrangements for class-level services and/or waivers of certain expenses. It is not the result of any difference in advisory or custodial fees or other expenses related to the management of a fund’s assets, which do not vary by class.

The following information replaces similar information found in the “Transfer and Service Agent Agreements” section.

TRANSFER AND SERVICE AGENT SERVICES

Fidelity Investments Institutional Operations Company LLC (FIIOC), an affiliate of FMR, which is located at 245 Summer Street, Boston, Massachusetts 02210 (or an agent, including an affiliate), performs transfer agency services under the terms of each fund’s management contract.

Prior to March 1, 2024, each fund or class, as applicable, bore the cost of transfer agency services under a separate agreement covering such services.

FIIOC may collect fees charged in connection with providing certain types of services such as exchanges, closing out fund balances, checkwriting, wire transactions, and providing historical account research, as applicable.

FIIOC bears the expense of typesetting, printing, and mailing prospectuses, statements of additional information, and all other reports, notices, and statements to existing shareholders, with the exception of proxy statements.

FIIOC or an affiliate may make payments out of its own resources to intermediaries (including affiliates of FIIOC) for recordkeeping services. Payments may also be made, upon direction, for other plan expenses. FIIOC may also pay an affiliate for providing services that otherwise would have been performed by FIIOC.

Fidelity Service Company, Inc. (FSC), an affiliate of FMR (or an agent, including an affiliate), calculates the NAV and dividends for shares, maintains each fund’s portfolio and general accounting records, and administers each fund’s securities lending program under the terms of each fund’s management contract.

Prior to March 1, 2024, each fund bore the cost of pricing and bookkeeping services under a separate agreement covering such services.

Effective March 1, 2024, each fund’s sub-advisory agreements with FMR Investment Management (UK) Limited, Fidelity Management & Research (Hong Kong) Limited, and Fidelity Management & Research (Japan) Limited were amended. The following information supplements similar information found in the “Management Contracts” section.

Under the terms of the sub-advisory agreements, FMR pays each sub-adviser monthly fees equal to 110% of the sub-adviser’s costs for providing sub-advisory services.

K-COM6-SSTK-0324-109 1.918660.109 March 1, 2024