a_moneymarket.htm

Message from the Trustees

Dear Fellow Shareholder:

Markets have reflected a heightened state of investor anxiety in recent weeks and months. The deepening European sovereign debt crisis, the potential for an economic slowdown in the United States, and the deceleration of growth by economic powerhouse China have all diminished investors’ appetite for risk.

While volatility may linger for some time, it is important to note that Putnam’s active portfolio managers continue to pursue investment opportunities around the world. In fact, during times when emotion drives market movements, nimble investors have historically had the best opportunities to take advantage of market inefficiencies.

We believe that in volatile markets, it is important to consult your financial advisor to help determine whether your portfolio reflects an appropriate degree of diversification. We also note that Putnam continues to bolster its lineup of funds that seek to limit volatility or guard against downside risk.

We would like to thank John A. Hill, who has served as Chairman of the Trustees since 2000 and who continues on as a Trustee, for his service. We are pleased to announce that Jameson A. Baxter is the new Chair, having served as Vice Chair since 2005 and a Trustee since 1994. Ms. Baxter is President of Baxter Associates, Inc., a private investment firm, and Chair of the Mutual Fund Directors Forum. In addition, she serves as Chair Emeritus of the Board of Trustees of Mount Holyoke College, Director of the Adirondack Land Trust, and Trustee of the Nature Conservancy’s Adirondack Chapter.

Lastly, we would like to take this opportunity to welcome new shareholders to the fund and to thank all of our investors for your continued confidence in Putnam.

About the fund

Seeking to offer accessibility and current income with relatively low risk

For most people, keeping part of their savings in an easily accessible place is an essential part of an investment plan. Putnam Money Market Fund can play a valuable role in many investors’ portfolios because it seeks to provide stability of principal and liquidity to meet short-term needs. In addition, the fund aims to provide investors with current income at short-term rates.

Because it invests in high-quality short-term money market instruments, the fund’s risk of losing principal may be lower than that of other funds. It typically invests in securities that are rated in the highest or second-highest category of at least one nationally recognized rating service. The fund seeks as high a rate of current income as Putnam Management believes is consistent with preservation of capital and maintenance of liquidity. Money market fund yields typically rise and fall along with short-term interest rates. Money market funds may not track rates exactly, however, as securities in these funds mature and are replaced with newer instruments earning the most current interest rates.

Whether you want to earmark money for near-term expenses or future investment opportunities, or just stow away cash for an unforeseen “rainy day,” this fund can be an appropriate choice.

Consider these risks before investing: Money market funds are not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other governmental agency. The effects of inflation may erode the value of your investment over time. Although the fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the fund.

Types of money market securities

Money market securities are issued by governments, government agencies, financial institutions, and established non-financial companies. Securities your fund invests in include:

Commercial paper Short-term unsecured loans issued by large corporations, typically for financing accounts receivable and inventories

Bank certificates of deposit Direct obligations of the issuing commercial bank or savings and loan association

Repurchase agreements (repos) Contracts in which one party sells a security to another party and agrees to buy it back later at a specified price; acts in economic terms as a secured loan

Government securities Direct short-term obligations of governments or government agencies; for example, U.S. Treasury bills

Variable-rate demand notes (VRDNs) Floating-rate securities with a long-term maturity, usually 20 or 30 years, that carry a coupon that resets every one or seven days, making them eligible for purchase by money market mutual funds.

Interview with your fund’s portfolio managers

Joanne M. Driscoll, CFA, and Jonathan M. Topper

How would you describe the investment environment during the 12 months ended September 30, 2011?

Joanne: With all the uncertainty and market volatility facing investors today, it’s easy to forget that the U.S. economy was beginning to turn a corner in the early months of the reporting period. Riskier assets like high-yield bonds and equities were rallying in response to a series of positive developments — most notably the encouraging financial results from corporate America. However, several developments pushed investors to reassess their expectations this past spring. Mixed economic indicators, Europe’s sovereign debt crisis, U.S. budget discussions, and inflationary pressures in China depressed investor sentiment and contributed to a more challenging atmosphere in the second half of the period.

Amid the increased uncertainty, we maintained Putnam Money Market Fund’s conservative, high-quality focus and avoided the distressed sectors of the money market. The fund performed in line with the current interest-rate environment, which has been defined, in large measure, by the Fed’s [Federal Reserve’s] decision to hold its benchmark federal funds rate steady in the 0%-to-0.25% range for 33 months since December 2008. While the Fed’s action was designed to promote liquidity in the financial system and to stimulate economic growth, it has resulted in returns and yields on money market securities that have hovered at historic lows.

The Fed has effectively cut interest rates to zero percent. What other steps has the central bank taken in recent months to foster stronger economic growth?

Jonathan: For some time, we have held the view that the Fed was unlikely to change its accommodative monetary policy until late 2012. However, given the increased risk of

This comparison shows your fund’s performance in the context of broad market indexes for the 12 months ended 9/30/11. See pages 4 and 10–11 for additional fund performance information. Index descriptions can be found on page 13.

an economic downturn in recent months, the Fed calmed the markets in August by announcing that its current accommodative stance would extend well into 2013. We now expect the Fed to maintain this posture at least until the middle of 2013.

With little wiggle room with regard to monetary policy, the Fed, in a widely expected stimulus move, announced “Operation Twist” in September. The program involves selling $400 billion in short-term Treasuries and then buying an equal amount of longer-term Treasuries, starting in October 2011 and ending in June 2012. This program is designed to push down yields on long-term bonds, while keeping short-term rates relatively unchanged. By helping to lower interest rates on mortgage and business loans, the Fed hopes that consumers and companies will have an incentive to borrow and spend money.

What are the implications of the European debt crisis for U.S. money market investors?

Joanne: The eurozone’s debt issues and the lack of a coordinated response weighed on investors’ minds throughout the period — contributing to weak confidence in the region. Many troubled European banks hold billions of euros in the sovereign debt of Greece, Spain, Italy, and other struggling European countries, with French banks appearing the most vulnerable. The worry is that the European crisis could potentially spread to the United States, as many U.S. money market funds hold short-term European bank debt.

Over the course of the period, U.S. money market fund managers have been reducing their exposure to European banks — as we at Putnam did — thereby attempting to limit the fallout in the event that the crisis deteriorates further.

Allocations are represented as a percentage of portfolio value. Summary information may differ from the portfolio schedule included in the financial statements due to the inclusion of derivative securities and the exclusion of as-of trades, if any, and the use of different classifications of securities for presentation purposes. Holdings and allocations may vary over time.

In August, ratings agency S&P [Standard & Poor’s] downgraded its credit rating for U.S. Treasuries. How significant was that move, and how did it affect money markets?

Jonathan: During the summer debt-ceiling debates, S&P was fairly clear that Washington’s inability to address such key issues as entitlement reform and tax reform — and thereby failing to reduce the federal deficit over the next decade — would result in a downgrade. Ultimately, Congress raised the debt ceiling to meet its short-term debt obligations and passed a plan to reduce the federal debt by at least $2.1 trillion over the next decade instead of the $4 trillion that the rating agency was recommending. Citing concern about the growing burden of long-term U.S. federal debt, S&P followed through and downgraded the U.S. sovereign debt by one ratings notch from AAA to AA+.

It is important to note that the other two agencies — Moody’s and Fitch — did not follow suit. To answer the question about how the S&P downgrade affected money market funds, the downgrade applies only to the U.S. government’s long-term debt. In light of SEC [Securities and Exchange Commission] limitations on money market funds investing in longer-term securities, a money market fund would be more directly affected by a short-term debt rating downgrade. And there has not been any public discussion by the major rating agencies of downgrading the short-term credit rating for U.S. debt.

We continually monitor the amount of liquidity the fund maintains and adjust it where necessary to meet the needs of our shareholders. SEC Rule 2a-7, which governs the operations of registered money market funds and requires them to invest only in short-term, highly liquid securities that represent minimal credit risk, specifically mandates that taxable money market funds maintain 10% daily investments and 30% weekly investments as minimum liquidity requirements.

Where did you find your best investment opportunities in this complex market environment?

Joanne: Over the past year, we have remained diligent in our credit research process to avoid exposure to securities that might pose risks to the funds. As a result, we have maintained significant allocations to high-quality money market securities, such as repurchase agreements that are collateralized by government securities. We also selectively added to the fund’s credit exposure outside of Europe, most notably in Canada, and the Australian and Nordic regions. In addition, we added exposure to municipal securities through commercial paper and VRDNs [variable-rate demand notes]. We believe tax-exempt rates have become attractive due to the low-rate environment and provide additional diversification with solid credit profiles. On September 30, 2011, the 7-day yield [with the fund’s expense limitation] was 0.01%, and the portfolio’s WAM [weighted average maturity] was 28 days.

Which holdings exemplified your strategy?

Jonathan: During the period, the fund was exposed to large creditworthy banks, such as JPMorgan Chase, Royal Bank of Canada, and the Commonwealth Bank of Australia, with tight maturity limits. Looking at underlying bank fundamentals, we continue to see a relatively improving picture, however. Asset-quality measures are showing improving trends. Profits are being retained and are helping to build capital. These positive developments are somewhat offset by the banks’ underlying revenue weakness with soft loan demand, pressured interest margins,

lower capital markets volume, and ongoing regulatory pressure on fee business. The European sovereign debt stress remains an influence on our overall bank positioning, and we have limited these exposures.

What is your outlook for the economy and money markets over the next several months?

Joanne: Revised GDP data show that the U.S. recession was deeper than we originally thought, suggesting that the recovery will likely be slower. U.S. growth in the first half of 2011 was especially weak, held back by higher oil prices, fiscal tightening, especially at the state and local levels, and the disruptive consequences of the Japanese disasters. With some of these factors reversing, we expected to see stronger performance in the second half of 2011. But we believe that the weakness in the financial markets during the third quarter and the mounting stresses in Europe represent major headwinds for the economy. Furthermore, sharp declines have occurred in consumer confidence and in key business indicators, notably, the Philadelphia Fed Index, and, in our view, the risk of a “double-dip” recession is now uncomfortably high.

When economic conditions begin to solidly improve, we believe interest-rate normalization in the United States is likely to occur. Until that time, with money market yields indicating that short-term rates could hold at their current and very low levels well into 2012 and beyond, we will continue to focus on safety and liquidity, while looking for competitive yields further out on the money market maturity spectrum when investment opportunities arise.

Thank you, Joanne and Jonathan, for bringing us up to date.

The views expressed in this report are exclusively those of Putnam Management and are subject to change. They are not meant as investment advice.

This chart shows how the fund’s top weightings have changed over the past six months. Weightings are shown as a percentage of portfolio value. Summary information may differ from the portfolio schedule included in the financial statements due to the inclusion of derivative securities and the exclusion of as-of trades, if any, and the use of different classifications of securities for presentation purposes. Holdings will vary over time.

Please note that the holdings discussed in this report may not have been held by the fund for the entire period. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk.

Portfolio Manager Joanne M. Driscoll has an M.B.A. from the Northeastern College of Business Administration and a B.S. from Westfield State College. A CFA charterholder, Joanne joined Putnam in 1995 and has been in the investment industry since 1992.

Portfolio Manager Jonathan M. Topper is a Portfolio Analyst at Putnam. He has a B.A. from Northeastern University. Jonathan has been in the investment industry since he joined Putnam in 1990.

IN THE NEWS

U.S. corporations are holding more cash on their books than at any time in nearly 50 years. At the end of June, non-financial companies held more than $2 trillion in cash and other liquid assets, according to the Federal Reserve (the Fed). This marks an increase of more than $88 billion since the end of March. Cash accounted for 7.1% of all company assets, according to the Fed, the highest level since 1963. The Fed’s analysis does not include the substantial amount of cash that U.S. companies hold overseas. While critics are putting pressure on companies to use the cash to invest or create more jobs, others say the sizeable cash holdings could provide an important buffer for U.S. companies if European bank woes should spark a global financial crisis.

Your fund’s performance

This section shows your fund’s performance, price, and distribution information for periods ended September 30, 2011, the end of its most recent fiscal year. In accordance with regulatory requirements for mutual funds, we also include expense information taken from the fund’s current prospectus. Performance should always be considered in light of a fund’s investment strategy. Data represent past performance. Past performance does not guarantee future results. More recent returns may be less or more than those shown. Investment return and principal value will fluctuate, and you may have a gain or a loss when you sell your shares. Performance information does not reflect any deduction for taxes a shareholder may owe on fund distributions or on the redemption of fund shares. For the most recent month-end performance, please visit the Individual Investors section at putnam.com or call Putnam at 1-800-225-1581. Class R shares are not available to all investors. See the Terms and Definitions section in this report for definitions of the share classes offered by your fund.

Fund performance Total return for periods ended 9/30/11


	Class A	Class B		Class C		Class M	Class R	Class T
(inception dates)	(10/1/76)	(4/27/92)		(2/1/99)		(12/8/94)	(1/21/03)	(12/31/01)

	Net					Net	Net	Net
	asset	Before	After	Before	After	asset	asset	asset
	value	CDSC	CDSC	CDSC	CDSC	value	value	value

Annual average
(life of fund)	5.61%	5.13%	5.13%	5.13%	5.13%	5.47%	5.12%	5.37%

10 years	20.69	16.18	16.18	16.19	16.19	19.30	16.44	18.42
Annual average	1.90	1.51	1.51	1.51	1.51	1.78	1.53	1.71

5 years	9.53	8.09	6.09	8.09	8.09	9.07	8.09	8.77
Annual average	1.84	1.57	1.19	1.57	1.57	1.75	1.57	1.70

3 years	0.92	0.60	–2.40	0.60	0.60	0.81	0.60	0.74
Annual average	0.31	0.20	–0.81	0.20	0.20	0.27	0.20	0.25

1 year	0.01	0.01	–4.99	0.01	–0.99	0.01	0.01	0.01

	Net					Net	Net	Net
Current yield	asset	Before	After	Before	After	asset	asset	asset
(end of period)*	value	CDSC	CDSC	CDSC	CDSC	value	value	value

Current 7-day yield
(with expense limitation)	0.01%	0.01%	—	0.01%	—	0.01%	0.01%	0.01%

Current 7-day yield
(without expense limitation)	–0.32	–0.82	—	–0.81	—	–0.47	–0.82	–0.57

Current performance may be lower or higher than the quoted past performance, which cannot guarantee future results. None of the share classes carry an initial sales charge. Class B share returns reflect the applicable contingent deferred sales charge (CDSC), which is 5% in the first year, declining over time to 1% in the sixth year, and is eliminated thereafter. Class C share returns reflect a 1% CDSC for the first year that is eliminated thereafter. Class A, M, R, and T shares generally have no CDSC. Performance for class B, C, M, R, and T shares before their inception is derived from the historical performance of class A shares, adjusted for the applicable sales charge (or CDSC) and the higher operating expenses for such shares.

* The 7-day yield is the most common gauge for measuring money market mutual fund performance. Yield reflects current performance more closely than total return.

For a portion of the periods, the fund had expense limitations, without which returns would have been lower.

Class B share performance does not reflect conversion to class A shares.

Comparative Lipper returns For periods ended 9/30/11


	Lipper Money Market Funds category average*

Annual average (life of fund)	5.73%

10 years	17.24
Annual average	1.60

5 years	8.20
Annual average	1.59

3 years	0.58
Annual average	0.19

1 year	0.02

Lipper results should be compared to fund performance at net asset value.

* Over the 1-year, 3-year, 5-year, 10-year, and life-of-fund periods ended 9/30/11, there were 274, 252, 234, 194, and 15 funds, respectively, in this Lipper category.

Fund distribution information For the 12-month period ended 9/30/11


Distributions	Class A	Class B	Class C	Class M	Class R	Class T

Number	12	12	12	12	12	12

Income	$0.000136	$0.000136	$0.000136	$0.000136	$0.000136	$0.000136

Capital gains	—	—	—	—	—	—

Total	$0.000136	$0.000136	$0.000136	$0.000136	$0.000136	$0.000136

The classification of distributions, if any, is an estimate. Final distribution information will appear on your year-end tax forms.

Your fund’s expenses

As a mutual fund investor, you pay ongoing expenses, such as management fees, distribution fees (12b-1 fees), and other expenses. In the most recent six-month period, your fund’s expenses were limited; had expenses not been limited, they would have been higher. Using the following information, you can estimate how these expenses affect your investment and compare them with the expenses of other funds. You may also pay one-time transaction expenses, including sales charges (loads) and redemption fees, which are not shown in this section and would have resulted in higher total expenses. For more information, see your fund’s prospectus or talk to your financial representative.

Expense ratios


	Class A	Class B	Class C	Class M	Class R	Class T

Total annual operating expenses for the fiscal year
ended 9/30/10*	0.50%	1.00%	1.00%	0.65%	1.00%	0.75%

Annualized expense ratio for the six-month period
ended 9/30/11†‡	0.18%	0.18%	0.18%	0.18%	0.18%	0.18%

Fiscal-year expense information in this table is taken from the most recent prospectus, is subject to change, and may differ from that shown for the annualized expense ratio and in the financial highlights of this report. Expenses are shown as a percentage of average net assets.

* Restated to reflect projected expenses under a management contract effective 1/1/10.

† For the fund’s most recent fiscal half year; may differ from expense ratios based on one-year data in the financial highlights.

‡ Reflects a voluntary waiver of certain fund expenses.

Expenses per $1,000

The following table shows the expenses you would have paid on a $1,000 investment in the fund from April 1, 2011, to September 30, 2011. It also shows how much a $1,000 investment would be worth at the close of the period, assuming actual returns and expenses.


	Class A	Class B	Class C	Class M	Class R	Class T

Expenses paid per $1,000*†	$0.90	$0.90	$0.90	$0.90	$0.90	$0.90

Ending value (after expenses)	$1,000.10	$1,000.10	$1,000.10	$1,000.10	$1,000.10	$1,000.10

* Expenses for each share class are calculated using the fund’s annualized expense ratio for each class, which represents the ongoing expenses as a percentage of average net assets for the six months ended 9/30/11. The expense ratio may differ for each share class.

† Expenses are calculated by multiplying the expense ratio by the average account value for the period; then multiplying the result by the number of days in the period; and then dividing that result by the number of days in the year.

Estimate the expenses you paid

To estimate the ongoing expenses you paid for the six months ended September 30, 2011, use the following calculation method. To find the value of your investment on April 1, 2011, call Putnam at 1-800-225-1581.

Compare expenses using the SEC’s method

The Securities and Exchange Commission (SEC) has established guidelines to help investors assess fund expenses. Per these guidelines, the following table shows your fund’s expenses based on a $1,000 investment, assuming a hypothetical 5% annualized return. You can use this information to compare the ongoing expenses (but not transaction expenses or total costs) of investing in the fund with those of other funds. All mutual fund shareholder reports will provide this information to help you make this comparison. Please note that you cannot use this information to estimate your actual ending account balance and expenses paid during the period.


	Class A	Class B	Class C	Class M	Class R	Class T

Expenses paid per $1,000*†	$0.91	$0.91	$0.91	$0.91	$0.91	$0.91

Ending value (after expenses)	$1,024.17	$1,024.17	$1,024.17	$1,024.17	$1,024.17	$1,024.17

Terms and definitions

Important terms

Total return shows how the value of the fund’s shares changed over time, assuming you held the shares through the entire period and reinvested all distributions in the fund.

Net asset value (NAV) is the price, or value, of one share of a mutual fund, without a sales charge. Net asset values fluctuate with market conditions, and are calculated by dividing the net assets of each class of shares by the number of outstanding shares in the class.

Contingent deferred sales charge (CDSC) is generally a charge applied at the time of the redemption of class B or C shares and assumes redemption at the end of the period. Your fund’s class B CDSC declines over time from a 5% maximum during the first year to 1% during the sixth year. After the sixth year, the CDSC no longer applies. The CDSC for class C shares is 1% for one year after purchase.

Current yield is the annual rate of return earned from dividends or interest of an investment. Current yield is expressed as a percentage of the price of a security, fund share, or principal investment.

Share classes

Class A shares generally are fund shares purchased with an initial sales charge. In the case of your fund, which has no sales charge, the reference is to shares purchased or acquired through the exchange of class A shares from another Putnam fund. Exchange of your fund’s class A shares into another fund may involve a sales charge, however.

Class B shares are not subject to an initial sales charge. They may be subject to a CDSC.

Class C shares are not subject to an initial sales charge and are subject to a CDSC only if the shares are redeemed during the first year.

Class M shares generally are fund shares that have a lower initial sales charge and a higher 12b-1 fee than class A shares and no CDSC. In the case of your fund, which has no sales charge, the reference is to shares purchased or acquired through the exchange of class M shares from another Putnam fund. Exchange of your fund’s class M shares into another fund may involve a sales charge, however.

Class R shares are not subject to an initial sales charge or CDSC and are available only to certain defined contribution plans.

Class T shares are not subject to an initial sales charge or CDSC (except on certain redemptions of shares acquired by exchange of shares of another Putnam fund bought without an initial sales charge); however, they are subject to a 12b-1 fee.

Comparative indexes

Barclays Capital U.S. Aggregate Bond Index is an unmanaged index of U.S. investment-grade fixed-income securities.

BofA (Bank of America) Merrill Lynch U.S. 3-Month Treasury Bill Index is an unmanaged index that seeks to measure the performance of U.S. Treasury bills available in the marketplace.

Lipper Money Market Funds category average is an arithmetic average of the total return of all money market mutual funds tracked by Lipper.

S&P 500 Index is an unmanaged index of common stock performance.

Indexes assume reinvestment of all distributions and do not account for fees. Securities and performance of a fund and an index will differ. You cannot invest directly in an index.

Lipper is a third-party industry-ranking entity that ranks mutual funds. Its rankings do not reflect sales charges. Lipper rankings are based on total return at net asset value relative to other funds that have similar current investment styles or objectives as determined by Lipper. Lipper may change a fund’s category assignment at its discretion. Lipper category averages reflect performance trends for funds within a category.

Trustee approval of management contract

General conclusions

The Board of Trustees of the Putnam funds oversees the management of each fund and, as required by law, determines annually whether to approve the continuance of your fund’s management contract with Putnam Investment Management (“Putnam Management”) and the sub-management contract with respect to your fund between Putnam Management and its affiliate, Putnam Investments Limited (“PIL”).

The Board of Trustees, with the assistance of its Contract Committee, which consists solely of Trustees who are not “interested persons” (as this term is defined in the Investment Company Act of 1940, as amended) of the Putnam funds (“Independent Trustees”), requests and evaluates all information it deems reasonably necessary under the circumstances in connection with its annual contract review. Over the course of several months ending in June 2011, the Contract Committee met on a number of occasions with representatives of Putnam Management, and separately in executive session, to consider the information that Putnam Management provided and other information developed with the assistance of the Board’s independent counsel and independent staff. The Contract Committee reviewed and discussed key aspects of this information with all of the Independent Trustees on a number of occasions. At the Trustees’ June 17, 2011 meeting, the Contract Committee recommended, and the Independent Trustees approved, the continuance of your fund’s management and sub-management contracts, effective July 1, 2011. (Because PIL is an affiliate of Putnam Management and Putnam Management remains fully responsible for all services provided by PIL, the Trustees have not evaluated PIL as a separate entity, and all subsequent references to Putnam Management below should be deemed to include reference to PIL as necessary or appropriate in the context.)

The Independent Trustees’ approval was based on the following conclusions:

• That the fee schedule in effect for your fund represented reasonable compensation in light of the nature and quality of the services being provided to the fund, the fees paid by competitive funds, and the costs incurred by Putnam Management in providing services, and

• That the fee schedule represented an appropriate sharing between fund shareholders and Putnam Management of such economies of scale as may exist in the management of the fund at current asset levels.

These conclusions were based on a comprehensive consideration of all information provided to the Trustees and were not the result of any single factor. Some of the factors that figured particularly in the Trustees’ deliberations and how the Trustees considered these factors are described below, although individual Trustees may have evaluated the information presented differently, giving different weights to various factors. It is also important to recognize that the management arrangements for your fund and the other Putnam funds are the result of many years of review and discussion between the Independent Trustees and Putnam Management, that some aspects of the arrangements may receive greater scrutiny in some years than others, and that the Trustees’ conclusions may be based, in part, on their consideration of fee arrangements in previous years.

Management fee schedules and total expenses

The Trustees reviewed the management fee schedules in effect for all Putnam funds, including fee levels and breakpoints. In reviewing management fees, the Trustees generally focus their attention on material changes in circumstances — for example, changes in assets under management or investment style, changes in Putnam Management’s operating costs, or changes in competitive

practices in the mutual fund industry — that suggest that consideration of fee changes might be warranted. The Trustees concluded that the circumstances did not warrant changes to the management fee structure of your fund.

Most of the open-end Putnam funds have new management contracts, with new fee schedules reflecting the implementation of more competitive fee levels for many funds, complex-wide breakpoints for the open-end funds, and performance fees for some funds. These new management contracts have been in effect for a little over a year — since January or, for a few funds, February, 2010. The Trustees approved the new management contracts on July 10, 2009, and fund shareholders subsequently approved the contracts by overwhelming majorities of the shares voted.

Because these management contracts had been implemented only recently, the Contract Committee had limited practical experience with the operation of the new fee structures. Under its new management contract, your fund has the benefit of breakpoints in its management fee that provide shareholders with significant economies of scale in the form of reduced fee levels as assets under management in the Putnam family of funds increase. The Contract Committee observed that the complex-wide breakpoints of the open-end funds had only been in place for a short while, and the Trustees will examine the operation of this new breakpoint structure in future years in light of further experience.

As in the past, the Trustees also focused on the competitiveness of each fund’s total expense ratio. In order to ensure that expenses of the Putnam funds continue to meet evolving competitive standards, the Trustees and Putnam Management agreed in 2009 to implement certain expense limitations. These expense limitations serve in particular to maintain competitive expense levels for funds with large numbers of small shareholder accounts and funds with relatively small net assets. Most funds, including your fund, had sufficiently low expenses that these expense limitations did not apply. The expense limitations were: (i) a contractual expense limitation applicable to all retail open-end funds of 37.5 basis points on investor servicing fees and expenses and (ii) a contractual expense limitation applicable to all open-end funds of 20 basis points on so-called “other expenses” (i.e., all expenses exclusive of management fees, investor servicing fees, distribution fees, investment-related expenses, interest, taxes, brokerage commissions and extraordinary expenses). Putnam Management’s support for these expense limitations was an important factor in the Trustees’ decision to approve the continuance of your fund’s management and sub-management contracts. In addition, Putnam Management and Putnam Retail Management Limited Partnership (“PRM”) voluntarily waived certain fees in order to enhance your fund’s annualized net yield during its fiscal year ending in 2010. This fee waiver was voluntary and may be modified or discontinued at any time without notice.

The Trustees reviewed comparative fee and expense information for a custom group of competitive funds selected by Lipper Inc. This comparative information included your fund’s percentile ranking for effective management fees and total expenses (excluding any applicable 12b-1 fee), which provides a general indication of your fund’s relative standing. In the custom peer group, your fund ranked in the 2nd quintile in effective management fees (determined for your fund and the other funds in the custom peer group based on fund asset size and the applicable contractual management fee schedule) and in the 2nd quintile in total expenses (excluding any applicable 12b-1 fees) as of December 31, 2010 (the first quintile representing the least expensive funds and the fifth quintile the most expensive funds). The fee and expense data reported by Lipper as of December 31, 2010 reflected the most recent fiscal year-end data available in Lipper’s database at that time.

In connection with their review of the management fees and total expenses of the Putnam funds, the Trustees also reviewed the costs of the services provided and the profits realized by Putnam Management and its affiliates from their contractual relationships with the funds. This information included trends in revenues, expenses and profitability of Putnam Management and its affiliates relating to the investment management, investor servicing and distribution services provided to the funds. In this regard, the Trustees also reviewed an analysis of Putnam Management’s revenues, expenses and profitability, allocated on a fund-by-fund basis, with respect to the funds’ management, distribution, and investor servicing contracts. For each fund, the analysis presented information about revenues, expenses and profitability for each of the agreements separately and for the agreements taken together on a combined basis. The Trustees concluded that, at current asset levels, the fee schedules in place represented reasonable compensation for the services being provided and represented an appropriate sharing of such economies of scale as may exist in the management of the funds at that time.

The information examined by the Trustees as part of their annual contract review for the Putnam funds has included for many years information regarding fees charged by Putnam Management and its affiliates to institutional clients such as defined benefit pension plans, college endowments, and the like. This information included comparisons of those fees with fees charged to the funds, as well as an assessment of the differences in the services provided to these different types of clients. The Trustees observed that the differences in fee rates between institutional clients and mutual funds are by no means uniform when examined by individual asset sectors, suggesting that differences in the pricing of investment management services to these types of clients may reflect historical competitive forces operating in separate markets. The Trustees considered the fact that in many cases fee rates across different asset classes are higher on average for mutual funds than for institutional clients, as well as the differences between the services that Putnam Management provides to the Putnam funds and those that it provides to its institutional clients. The Trustees did not rely on these comparisons to any significant extent in concluding that the management fees paid by your fund are reasonable.

Investment performance

The quality of the investment process provided by Putnam Management represented a major factor in the Trustees’ evaluation of the quality of services provided by Putnam Management under your fund’s management contract. The Trustees were assisted in their review of the Putnam funds’ investment process and performance by the work of several investment oversight committees of the Trustees, which met on a regular basis with the funds’ portfolio teams and with the Chief Investment Officer and other members of Putnam Management’s Investment Division throughout the year. The Trustees concluded that Putnam Management generally provides a high-quality investment process — based on the experience and skills of the individuals assigned to the management of fund portfolios, the resources made available to them, and in general Putnam Management’s ability to attract and retain high-quality personnel — but also recognized that this does not guarantee favorable investment results for every fund in every time period. The Trustees considered the investment performance of each fund over multiple time periods and considered information comparing each fund’s performance with various benchmarks and with the performance of competitive funds.

The Committee noted the substantial improvement in the performance of most Putnam funds during the 2009–2010 period and Putnam Management’s ongoing efforts to strengthen its investment personnel and processes. The Committee also noted the

disappointing investment performance of some funds for periods ended December 31, 2010 and considered information provided by Putnam Management regarding the factors contributing to the underperformance and actions being taken to improve the performance of these particular funds. The Trustees indicated their intention to continue to monitor performance trends to assess the effectiveness of these efforts and to evaluate whether additional actions to address areas of underperformance are warranted.

In the case of your fund, the Trustees considered that its class A share cumulative total return performance at net asset value was in the following quartiles of its Lipper Inc. peer group (Lipper Money Market Funds) for the one-year, three-year and five-year periods ended December 31, 2010 (the first quartile representing the best-performing funds and the fourth quartile the worst-performing funds):


One-year period	1st

Three-year period	1st

Five-year period	1st

Over the one-year, three-year and five-year periods ended December 31, 2010, there were 281, 266 and 247 funds, respectively, in your fund’s Lipper peer group. (When considering performance information, shareholders should be mindful that past performance is not a guarantee of future results.)

Brokerage and soft-dollar allocations; investor servicing

The Trustees considered various potential benefits that Putnam Management may receive in connection with the services it provides under the management contract with your fund. These include benefits related to brokerage allocation and the use of soft dollars, whereby a portion of the commissions paid by a fund for brokerage may be used to acquire research services that are expected to be useful to Putnam Management in managing the assets of the fund and of other clients. Subject to policies established by the Trustees, soft-dollar credits acquired through these means are used primarily to supplement Putnam Management’s internal research efforts. However, the Trustees noted that a portion of available soft-dollar credits continues to be allocated to the payment of fund expenses. The Trustees indicated their continued intent to monitor regulatory developments in this area with the assistance of their Brokerage Committee and also indicated their continued intent to monitor the potential benefits associated with fund brokerage and soft-dollar allocations and trends in industry practices to ensure that the principle of seeking best price and execution remains paramount in the portfolio trading process.

Putnam Management may also receive benefits from payments that the funds make to Putnam Management’s affiliates for investor or distribution services. In conjunction with the annual review of your fund’s management contract, the Trustees reviewed your fund’s investor servicing agreement with Putnam Investor Services, Inc. (“PSERV”) and its distributor’s contracts and distribution plans with PRM, both of which are affiliates of Putnam Management. The Trustees concluded that the fees payable by the funds to PSERV and PRM, as applicable, for such services are reasonable in relation to the nature and quality of such services.

Other information for shareholders

Important notice regarding Putnam’s privacy policy

In order to conduct business with our shareholders, we must obtain certain personal information such as account holders’ names, addresses, Social Security numbers, and dates of birth. Using this information, we are able to maintain accurate records of accounts and transactions.

It is our policy to protect the confidentiality of our shareholder information, whether or not a shareholder currently owns shares of our funds. In particular, it is our policy not to sell information about you or your accounts to outside marketing firms. We have safeguards in place designed to prevent unauthorized access to our computer systems and procedures to protect personal information from unauthorized use.

Under certain circumstances, we must share account information with outside vendors who provide services to us, such as mailings and proxy solicitations. In these cases, the service providers enter into confidentiality agreements with us, and we provide only the information necessary to process transactions and perform other services related to your account. Finally, it is our policy to share account information with your financial representative, if you’ve listed one on your Putnam account.

Proxy voting

Putnam is committed to managing our mutual funds in the best interests of our shareholders. The Putnam funds’ proxy voting guidelines and procedures, as well as information regarding how your fund voted proxies relating to portfolio securities during the 12-month period ended June 30, 2011, are available in the Individual Investors section at putnam.com, and on the SEC’s website, www.sec.gov. If you have questions about finding forms on the SEC’s website, you may call the SEC at 1-800-SEC-0330. You may also obtain the Putnam funds’ proxy voting guidelines and procedures at no charge by calling Putnam’s Shareholder Services at 1-800-225-1581.

Fund portfolio holdings

The fund will file a complete schedule of its portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-Q. Shareholders may obtain the fund’s Forms N-Q on the SEC’s website at www.sec.gov. In addition, the fund’s Forms N-Q may be reviewed and copied at the SEC’s Public Reference Room in Washington, D.C. You may call the SEC at 1-800-SEC-0330 for information about the SEC’s website or the operation of the Public Reference Room.

Trustee and employee fund ownership

Putnam employees and members of the Board of Trustees place their faith, confidence, and, most importantly, investment dollars in Putnam mutual funds. As of September 30, 2011, Putnam employees had approximately $298,000,000 and the Trustees had approximately $65,000,000 invested in Putnam mutual funds. These amounts include investments by the Trustees’ and employees’ immediate family members as well as investments through retirement and deferred compensation plans.

Financial statements

These sections of the report, as well as the accompanying Notes, preceded by the Report of Independent Registered Public Accounting Firm, constitute the fund’s financial statements.

The fund’s portfolio lists all the fund’s investments and their values as of the last day of the reporting period. Holdings are organized by asset type and industry sector, country, or state to show areas of concentration and diversification.

Statement of assets and liabilities shows how the fund’s net assets and share price are determined. All investment and non-investment assets are added together. Any unpaid expenses and other liabilities are subtracted from this total. The result is divided by the number of shares to determine the net asset value per share, which is calculated separately for each class of shares. (For funds with preferred shares, the amount subtracted from total assets includes the liquidation preference of preferred shares.)

Statement of operations shows the fund’s net investment gain or loss. This is done by first adding up all the fund’s earnings — from dividends and interest income — and subtracting its operating expenses to determine net investment income (or loss). Then, any net gain or loss the fund realized on the sales of its holdings — as well as any unrealized gains or losses over the period — is added to or subtracted from the net investment result to determine the fund’s net gain or loss for the fiscal year.

Statement of changes in net assets shows how the fund’s net assets were affected by the fund’s net investment gain or loss, by distributions to shareholders, and by changes in the number of the fund’s shares. It lists distributions and their sources (net investment income or realized capital gains) over the current reporting period and the most recent fiscal year-end. The distributions listed here may not match the sources listed in the Statement of operations because the distributions are determined on a tax basis and may be paid in a different period from the one in which they were earned.

Financial highlights provide an overview of the fund’s investment results, per-share distributions, expense ratios, net investment income ratios, and portfolio turnover in one summary table, reflecting the five most recent reporting periods. In a semiannual report, the highlights table also includes the current reporting period.

Report of Independent Registered Public Accounting Firm

To the Trustees and Shareholders of
Putnam Money Market Fund:

In our opinion, the accompanying statement of assets and liabilities, including the portfolio, and the related statements of operations and of changes in net assets and the financial highlights present fairly, in all material respects, the financial position of Putnam Money Market Fund (the “fund”) at September 30, 2011, and the results of its operations, the changes in its net assets and the financial highlights for each of the periods indicated, in conformity with accounting principles generally accepted in the United States of America. These financial statements and financial highlights (hereafter referred to as “financial statements”) are the responsibility of the fund’s management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits of these financial statements in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits, which included confirmation of investments owned at September 30, 2011 by correspondence with the custodian, brokers, and transfer agent provide a reasonable basis for our opinion.

PricewaterhouseCoopers LLP
Boston, Massachusetts
November 10, 2011

The fund’s portfolio 9/30/11


REPURCHASE AGREEMENTS (34.3%)*	Principal amount	Value

Interest in $295,000,000 joint tri-party repurchase agreement dated
September 30, 2011 with Citigroup Global Markets, Inc. due October 3,
2011 — maturity value of $90,000,750 for an effective yield of 0.10%
(collateralized by various mortgage-backed securities with coupon rates
ranging from 3.003% to 5.211% and due dates ranging from December 1,
2020 to July 1, 2041, valued at $300,900,001)	$90,000,000	$90,000,000

Interest in $93,409,000 joint tri-party repurchase agreement dated
September 30, 2011 with Deutsche Bank Securities, Inc. due October 3,
2011 — maturity value of $72,704,424 for an effective yield of 0.07%
(collateralized by United States Treasury notes with a coupon rate of 2.25%
and a due date of July 31, 2018, valued at $95,277,239)	72,704,000	72,704,000

Interest in $420,000,000 joint tri-party repurchase agreement dated
September 30, 2011 with Goldman Sachs & Co. due October 3, 2011 —
maturity value of $100,000,417 for an effective yield of 0.05% (collateralized
by various mortgage-backed securities with coupon rates ranging from 2.458%
to 6.00% and due dates ranging from April 1, 2026 to September 1, 2041,
valued at $428,400,000)	100,000,000	100,000,000

Interest in $56,000,000 joint tri-party repurchase agreement dated
September 30, 2011 with JPMorgan Securities, Inc. due October 3, 2011 —
maturity value of $37,000,555 for an effective yield of 0.18% (collateralized
by various corporate bonds and notes with coupon rates ranging from 3.625%
to 10.75% and due dates ranging from June 1, 2013 to October 1, 2040,
valued at $58,802,622)	37,000,000	37,000,000

Interest in $130,000,000 joint tri-party repurchase agreement dated
September 30, 2011 with JPMorgan Securities, Inc. due October 3, 2011 —
maturity value of $90,000,675 for an effective yield of 0.09% (collateralized
by various Federal National Mortgage Association securities with coupon
rates ranging from 3.50% to 7.00% and due dates ranging from April 1, 2012
to October 1, 2041, valued at $132,600,769)	90,000,000	90,000,000

Interest in $460,000,000 joint tri-party repurchase agreement dated
September 30, 2011 with Merrill Lynch & Co., Inc. due October 3, 2011 —
maturity value of $87,000,580 for an effective yield of 0.08% (collateralized
by Government National Mortgage Association securities with a coupon
rate of 4.50% and a due date of May 20, 2041, valued at $469,200,001)	87,000,000	87,000,000

Interest in $314,000,000 joint tri-party term repurchase agreement dated
September 27, 2011 with Barclays Capital, Inc. due October 4, 2011, 0.07%
(collateralized by various mortgage-backed securities with coupon rates
ranging from 2.151% to 5.953% and due dates ranging from April 1, 2035
to August 1, 2041, valued at $320,280,000) ^TR	19,000,000	19,000,000

Interest in $286,500,000 joint tri-party term repurchase agreement dated
September 27, 2011 with Citigroup Global Markets, Inc. due October 4, 2011,
0.12% (collateralized by various mortgage-backed securities with coupon rates
ranging from 3.495% to 6.039% and due dates ranging from October 1, 2020
to September 20, 2041, valued at $292,447,981) ^TR	38,000,000	38,000,000

Interest in $150,000,000 joint tri-party term repurchase agreement dated
September 28, 2011 with Deutsche Bank Securities, Inc. due October 5,
2011, 0.09% (collateralized by various Federal Home Loan Mortgage
Corporation securities with coupon rates ranging from 3.50% to 7.00% and
due dates ranging from January 1, 2026 to March 1, 2040, valued
at $153,000,000) ^TR	36,500,000	36,500,000


REPURCHASE AGREEMENTS (34.3%)* cont.	Principal amount	Value

Interest in $150,000,000 joint tri-party term repurchase agreement dated
September 28, 2011 with Goldman Sachs & Co. due October 5, 2011, 0.10%
(collateralized by various Government National Mortgage Association
securities with coupon rates ranging from 4.00% to 5.50% and due dates
ranging from July 15, 2026 to April 20, 2041, valued at $153,000,001) ^TR	$36,500,000	$36,500,000

Interest in $39,000,000 tri-party term repurchase agreement dated
September 1, 2011 with Merrill Lynch & Co., Inc. due November 4, 2011,
0.27% FRN (collateralized by various corporate bonds and notes with coupon
rates ranging from 0.597% to 6.60% and due dates ranging from December 5,
2012 to January 5, 2038, valued at $40,950,001) ^TR	39,000,000	39,000,000

Total repurchase agreements (cost $645,704,000)		$645,704,000


ASSET-BACKED COMMERCIAL PAPER (19.6%)*	Yield (%)	Maturity date	Principal amount	Value

Alpine Securitization Corp. (Switzerland)	0.160	10/7/11	$9,400,000	$9,399,749

Bryant Park Funding, LLC	0.170	10/25/11	9,372,000	9,370,938

Bryant Park Funding, LLC	0.170	10/20/11	8,700,000	8,699,219

CAFCO, LLC	0.150	10/11/11	9,500,000	9,499,604

CHARTA, LLC	0.170	10/14/11	9,500,000	9,499,417

CIESCO LP	0.180	10/21/11	2,000,000	1,999,800

CIESCO LP	0.170	10/27/11	9,200,000	9,198,870

CRC Funding, LLC	0.170	10/28/11	9,500,000	9,498,789

Fairway Finance, LLC (Canada)	0.200	11/4/11	19,800,000	19,796,260

Fairway Finance, LLC (Canada)	0.200	10/25/11	4,700,000	4,699,373

Fairway Finance, LLC (Canada)	0.200	10/19/11	4,000,000	3,999,600

Falcon Asset Securitization Co., LLC	0.190	10/25/11	7,000,000	6,999,113

Falcon Asset Securitization Co., LLC	0.160	10/11/11	2,500,000	2,499,889

Falcon Asset Securitization Co., LLC	0.130	10/5/11	9,500,000	9,499,863

FCAR Owner Trust I	0.200	10/5/11	17,120,000	17,119,620

Govco, LLC	0.170	10/20/11	4,150,000	4,149,628

Govco, LLC	0.160	10/21/11	4,400,000	4,399,609

Jupiter Securitization Co., LLC	0.140	10/28/11	19,000,000	18,998,005

Liberty Street Funding, LLC (Canada)	0.260	11/21/11	8,800,000	8,796,759

Liberty Street Funding, LLC (Canada)	0.250	11/14/11	9,000,000	8,997,250

Liberty Street Funding, LLC (Canada)	0.190	10/12/11	10,900,000	10,899,367

Manhattan Asset Funding Co., LLC (Japan)	0.280	10/26/11	8,000,000	7,998,444

Manhattan Asset Funding Co., LLC (Japan)	0.260	10/11/11	7,800,000	7,799,437

Manhattan Asset Funding Co., LLC (Japan)	0.250	10/17/11	3,300,000	3,299,633

Old Line Funding, LLC	0.250	11/3/11	12,200,000	12,197,204

Old Line Funding, LLC	0.170	10/28/11	3,000,000	2,999,618

Old Line Funding, LLC	0.160	10/20/11	3,000,000	2,999,747

Straight-A Funding, LLC	0.190	11/14/11	26,000,000	25,993,962

Straight-A Funding, LLC	0.190	11/3/11	22,000,000	21,996,168

Straight-A Funding, LLC	0.160	10/3/11	10,000,000	9,999,911

Thunder Bay Funding, LLC	0.220	11/10/11	5,000,000	4,998,778

Thunder Bay Funding, LLC	0.210	11/2/11	12,000,000	11,997,760

Thunder Bay Funding, LLC	0.190	10/24/11	590,000	589,928


ASSET-BACKED COMMERCIAL PAPER (19.6%)* cont.	Yield (%)	Maturity date	Principal amount	Value

Thunder Bay Funding, LLC	0.180	10/11/11	$1,433,000	$1,432,928

Variable Funding Capital Co., LLC	0.180	10/18/11	4,000,000	3,999,660

Variable Funding Capital Co., LLC	0.170	10/28/11	16,700,000	16,697,871

Victory Receivables Corp. (Japan)	0.310	12/20/11	4,100,000	4,097,176

Victory Receivables Corp. (Japan)	0.310	12/13/11	12,900,000	12,891,891

Victory Receivables Corp. (Japan)	0.240	10/21/11	11,390,000	11,388,481

Working Capital Management Co. (Japan)	0.310	10/4/11	9,100,000	9,099,765

Working Capital Management Co. (Japan)	0.240	10/3/11	9,100,000	9,099,879

Total asset-backed commercial paper (cost $369,598,963)				$369,598,963


COMMERCIAL PAPER (15.5%)*		Maturity	Principal
	Yield (%)	date	amount	Value

Australia & New Zealand Banking Group, Ltd.
(Australia)	0.351	2/2/12	$21,500,000	$21,474,081

Barclays Bank PLC/Cayman (Cayman Islands)	0.200	10/6/11	9,500,000	9,499,736

Canadian Imperial Holdings, Inc.	0.160	11/7/11	9,260,000	9,258,477

Canadian Imperial Holdings, Inc.	0.140	10/5/11	9,260,000	9,259,856

Citigroup Funding, Inc.	0.250	10/12/11	9,200,000	9,199,297

Commonwealth Bank of Australia (Australia)	0.481	3/19/12	4,000,000	3,990,933

Commonwealth Bank of Australia (Australia)	0.366	12/8/11	14,000,000	14,000,000

Commonwealth Bank of Australia (Australia)	0.205	10/4/11	11,400,000	11,399,805

DnB NOR Bank ASA (Norway)	0.271	12/7/11	27,100,000	27,086,339

DnB NOR Bank ASA (Norway)	0.210	10/20/11	1,400,000	1,399,845

General Electric Capital Corp.	0.230	12/30/11	9,000,000	8,994,825

General Electric Capital Services	0.230	1/19/12	9,900,000	9,893,043

HSBC USA, Inc. (United Kingdom)	0.220	12/27/11	9,200,000	9,195,109

HSBC USA, Inc. (United Kingdom)	0.200	12/12/11	8,000,000	7,996,800

HSBC USA, Inc. (United Kingdom)	0.190	11/28/11	11,000,000	10,996,633

Nordea North America, Inc. (Sweden)	0.270	11/3/11	1,600,000	1,599,604

Nordea North America, Inc. (Sweden)	0.225	10/21/11	27,000,000	26,996,625

Royal Bank of Scotland Group PLC
(United Kingdom)	0.170	10/3/11	9,500,000	9,499,910

State Street Corp.	0.250	12/8/11	10,500,000	10,495,042

State Street Corp.	0.200	12/7/11	8,400,000	8,396,873

Texas Instruments, Inc.	0.150	11/8/11	9,400,000	9,398,512

Toronto-Dominion Holdings USA, Inc.
(Canada)	0.150	10/17/11	3,600,000	3,599,760

Toyota Credit Canada, Inc. (Canada)	0.240	10/17/11	9,480,000	9,478,989

Toyota Credit Canada, Inc. (Canada)	0.180	11/15/11	10,000,000	9,997,750

Wal-Mart Stores, Inc.	0.080	10/11/11	19,000,000	18,999,578

Westpac Banking Corp./NY 144A (Australia)	0.300	1/11/12	19,000,000	18,983,850

Total commercial paper (cost $291,091,272)				$291,091,272


MUNICIPAL BONDS		Maturity		Principal
AND NOTES (11.8%)*	Yield (%)	date	Rating**	amount	Value

Connecticut (0.4%)
Yale University Commercial Paper	0.190	1/18/12	P-1	$7,000,000	$6,995,382

					6,995,382
Indiana (2.4%)
Indiana State Finance Authority VRDN,
Ser. A ^M	0.130	2/1/35	VMIG1	9,000,000	9,000,471

Indiana State Finance Authority VRDN,
Ser. A-1 ^M	0.130	2/1/37	VMIG1	2,000,000	2,000,000

Saint Joseph County Commercial Paper
(University of Notre Dame)	0.240	12/1/11	P-1	6,264,000	6,260,200

Saint Joseph County Commercial Paper
(University of Notre Dame)	0.152	10/3/11	P-1	6,000,000	5,999,150

Trinity Health Corporation
Commercial Paper	0.200	10/31/11	P-1	9,000,000	8,997,300

Trinity Health Corporation
Commercial Paper	0.160	10/7/11	P-1	13,000,000	12,999,653

					45,256,774
Kentucky (0.6%)
Kentucky Economic Development Finance
Authority VRDN (Catholic Health
Initiatives), Ser. C ^M	0.120	5/1/34	VMIG1	11,000,000	11,000,000

					11,000,000
Maryland (2.2%)
Howard County Commercial Paper	0.150	10/31/11	P-1	16,000,000	16,000,000

Howard County Commercial Paper	0.150	10/31/11	P-1	2,750,000	2,750,000

Johns Hopkins University Commercial
Paper, Ser. A	0.140	11/15/11	P-1	5,000,000	5,000,000

Johns Hopkins University Commercial
Paper, Ser. A	0.130	11/1/11	P-1	6,000,000	6,000,000

Johns Hopkins University Commercial
Paper, Ser. B	0.130	10/4/11	P-1	13,400,000	13,400,000

					43,150,000
Massachusetts (0.6%)
Harvard University Commercial Paper	0.140	11/15/11	P-1	8,000,000	7,998,600

Harvard University Commercial Paper	0.180	10/3/11	P-1	4,200,000	4,199,958

					12,198,558
Michigan (0.3%)
University of Michigan VRDN (Hospital),
Ser. B ^M	0.100	12/1/37	VMIG1	5,000,000	5,000,000

					5,000,000
Montana (0.2%)
Montana Facilities Finance Authority
VRDN (Sisters of Charity), Ser. A ^M	0.140	12/1/25	VMIG1	2,825,000	2,825,000

					2,825,000
Nevada (0.5%)
Truckee Meadows Water Authority
Commercial Paper, Ser. 06-B (Lloyds
TSB Bank PLC/New York (LOC))	0.150	10/6/11	P-1	9,600,000	9,600,000

					9,600,000


MUNICIPAL BONDS		Maturity		Principal
AND NOTES (11.8%)* cont.	Yield (%)	date	Rating**	amount	Value

New Hampshire (0.2%)
New Hampshire Health & Education
Facilities Authority VRDN (University
of New Hampshire), Ser. B-2 ^M	0.140	7/1/33	VMIG1	$2,975,000	$2,975,000

					2,975,000
New York (0.7%)
Trustees of Columbia University (The)
Commercial Paper	0.150	10/13/11	P-1	13,000,000	12,999,350

					12,999,350
North Carolina (0.1%)
Wake County VRDN, Ser. B ^M	0.120	3/1/24	VMIG1	1,500,000	1,500,000

					1,500,000
Ohio (0.2%)
Columbus, Sewer VRDN, Ser. B ^M	0.100	6/1/32	VMIG1	3,530,000	3,530,000

					3,530,000
Oklahoma (0.1%)
Oklahoma State Capitol Improvement
Authority State Facilities VRDN (Higher
Education), Ser. D2 ^M	0.320	7/1/32	VMIG1	2,800,000	2,800,000

					2,800,000
Tennessee (0.6%)
Metropolitan Government Nashville &
Davidson County, Health & Educational
Facilities Board VRDN (Vanderbilt
University), Ser. A-1 ^M	0.080	10/1/44	VMIG1	11,500,000	11,500,000

					11,500,000
Texas (1.5%)
Board of Regents of Texas Tech
University Revenue Financing System
Commercial Paper, Ser. A	0.140	12/7/11	P-1	10,923,000	10,923,000

Board of Regents of Texas Tech
University Revenue Financing System
Commercial Paper, Ser. A	0.140	11/1/11	P-1	8,500,000	8,500,000

Harris County, Health Facilities
Development Authority VRDN (Texas
Childrens Hospital), Ser. B-1 ^M	0.150	10/1/29	VMIG1	3,795,000	3,795,000

University of Texas System Board of
Regents Revenue Financing System
Commercial Paper, Ser. A	0.140	12/7/11	P-1	5,476,000	5,476,000

					28,694,000
Virginia (1.2%)
Regents of University of Virginia
Commercial Paper, Ser. 03-A	0.150	11/2/11	P-1	22,750,000	22,750,000

					22,750,000

Total municipal bonds and notes (cost $222,774,064)					$222,774,064


U.S. GOVERNMENT AGENCY		Maturity	Principal
OBLIGATIONS (5.2%)*	Yield (%)	date	amount	Value

Bank of America Corp. FDIC guaranteed
notes, MTN, Ser. L ^k	2.100	4/30/12	$39,000,000	$39,430,069

Citigroup, Inc. FDIC guaranteed notes ^k	2.875	12/9/11	3,100,000	3,114,979

Federal Home Loan Bank discount notes	0.100	11/8/11	3,900,000	3,899,588

Federal Home Loan Bank discount notes	0.075	12/19/11	5,400,000	5,399,111

Federal Home Loan Mortgage Corp.
discount notes	0.100	2/10/12	5,000,000	4,998,167

Federal Home Loan Mortgage Corp.
discount notes	0.090	12/7/11	3,000,000	2,999,498

Federal Home Loan Mortgage Corp.
discount notes	0.070	10/3/11	2,200,000	2,199,991

Federal National Mortgage Association
discount notes	0.080	12/30/11	1,570,000	1,569,686

General Electric Capital Corp. FDIC
guaranteed notes, FRN, MTN, Ser. G	1.267	12/9/11	7,000,000	7,013,255

General Electric Capital Corp. FDIC
guaranteed notes, MTN Ser. G ^k	3.000	12/9/11	22,453,000	22,567,123

Wells Fargo & Co. FDIC guaranteed notes ^k	3.000	12/9/11	4,786,000	4,810,261

Total U.S. government agency obligations (cost $98,001,728)				$98,001,728


SHORT-TERM INVESTMENT FUND (5.2%)*			Shares	Value

Putnam Money Market Liquidity Fund 0.10% ^e			97,046,017	$97,046,017

Total short-term investment fund (cost $97,046,017)				$97,046,017


CERTIFICATES OF DEPOSIT (3.9%)*	Interest	Maturity	Principal
	rate (%)	date	amount	Value

Australia & New Zealand Banking Group, Ltd.
(Australia)	0.250	11/16/11	$7,500,000	$7,500,000

National Australia Bank/New York FRN
(Australia)	0.235	10/6/11	28,000,000	28,000,000

Svenska Handelsbanken/New York, NY
(Sweden)	0.200	10/6/11	4,540,000	4,539,596

Toronto-Dominion Bank/NY (Canada)	0.235	11/10/11	25,000,000	25,000,000

Westpac Banking Corp./NY (Australia)	0.230	12/9/11	9,250,000	9,249,096

Total certificates of deposit (cost $74,288,692)				$74,288,692


CORPORATE BONDS AND NOTES (3.5%)*	Interest	Maturity	Principal
	rate (%)	date	amount	Value

Kommunalbanken AS sr. unsec. unsub. notes,
EMTN, Ser. 1905 (Norway)	5.125	10/14/11	$13,000,000	$13,022,533

Royal Bank of Canada 144A sr. unsec. notes
FRN (Canada) ^M	0.689	5/15/14	29,425,000	29,427,621

Svenska Handelsbanken/New York, NY 144A
FRN (Sweden) ^M	0.376	6/8/17	23,500,000	23,500,000

Total corporate bonds and notes (cost $65,950,154)				$65,950,154


TIME DEPOSITS (1.5%)*	Interest	Maturity	Principal
	rate (%)	date	amount	Value

US Bank, NA/Cayman Islands	0.080	10/3/11	$28,500,000	$28,500,000

Total time deposits (cost $28,500,000)				$28,500,000


TOTAL INVESTMENTS

Total investments (cost $1,892,954,890)				$1,892,954,890


Key to holding’s abbreviations
EMTN	Euro Medium Term Notes
FDIC Guaranteed	Federal Deposit Insurance Corp. Guaranteed
FRN	Floating Rate Notes
LOC	Letter of credit
MTN	Medium Term Notes
VRDN	Variable Rate Demand Notes

Notes to the fund’s portfolio

Unless noted otherwise, the notes to the fund’s portfolio are for the close of the fund’s reporting period, which ran from October 1, 2010 through September 30, 2011 (the reporting period).

* Percentages indicated are based on net assets of $1,881,945,175.

** The Moody’s, Standard & Poor’s or Fitch ratings indicated are believed to be the most recent ratings available at the close of the reporting period for the securities listed. Ratings are generally ascribed to securities at the time of issuance. While the agencies may from time to time revise such ratings, they undertake no obligation to do so, and the ratings do not necessarily represent what the agencies would ascribe to these securities at the close of the reporting period. The rating of an insured security represents what is believed to be the most recent rating of the insurer’s claims-paying ability available at the close of the reporting period and does not reflect any subsequent changes. Ratings are not covered by the Report of Independent Registered Public Accounting Firm. Security ratings are defined in the Statement of Additional Information.

^eSee Note 5 to the financial statements regarding investments in Putnam Money Market Liquidity Fund. The rate quoted in the security description is the annualized 7-day yield of the fund at the close of the reporting period.

^kThe rates shown are the current interest rates at the close of the reporting period.

^MThe security’s effective maturity date is less than one year.

^TRMaturity value of a term repurchase agreement will equal the principal amount of the repurchase agreement plus interest.

Debt obligations are considered secured unless otherwise indicated.

144A after the name of an issuer represents securities exempt from registration under Rule 144A under the Securities Act of 1933, as amended. These securities may be resold in transactions exempt from registration, normally to qualified institutional buyers.

VRDN are floating-rate securities with a long-term maturity, that carry a coupon that resets every one or seven days. The rates shown are the current interest rates at the close of the reporting period.

The rates shown on FRN are the current interest rates at the close of the reporting period.

The dates shown on debt obligations are the original maturity dates.


DIVERSIFICATION BY COUNTRY

Distribution of investments by country of risk at the close of the reporting period, excluding collateral received, if any (as a percentage of Portfolio Value):

United States	75.1%	Norway	2.2%

Canada	7.1	United Kingdom	2.0

Australia	6.1	Cayman Islands	0.5

Japan	3.5	Switzerland	0.5

Sweden	3.0	Total	100.0%

Accounting Standards Codification ASC 820 Fair Value Measurements and Disclosures (ASC 820) establishes a three-level hierarchy for disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of the fund’s investments. The three levels are defined as follows:

Level 1 — Valuations based on quoted prices for identical securities in active markets.

Level 2 — Valuations based on quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly.

Level 3 — Valuations based on inputs that are unobservable and significant to the fair value measurement.

The following is a summary of the inputs used to value the fund’s net assets as of the close of the reporting period:


			Valuation inputs

Investments in securities:	Level 1	Level 2		Level 3

Asset-backed commercial paper	$—	$369,598,963		$—

Certificates of deposit	—	74,288,692		—

Commercial paper	—	291,091,272		—

Corporate bonds and notes	—	65,950,154		—

Municipal bonds and notes	—	222,774,064		—

Repurchase agreements	—	645,704,000		—

Short-term investment fund	97,046,017	—		—

Time deposits	—	28,500,000		—

U.S. government agency obligations	—	98,001,728		—

Totals by level	$97,046,017	$1,795,908,873		$—

The accompanying notes are an integral part of these financial statements.

Statement of assets and liabilities 9/30/11


ASSETS

Investment in securities, at value (Note 1):
Unaffiliated issuers (at amortized cost)	$1,150,204,873
Affiliated issuers (identified cost $97,046,017) (Note 5)	97,046,017
Repurchase agreements (identified cost $645,704,000)	645,704,000

Cash	800

Interest and other receivables	1,513,062

Receivable for shares of the fund sold	3,717,098

Receivable for investments sold	125,000

Receivable from Manager (Note 2)	72,102

Total assets	1,898,382,952

LIABILITIES

Distributions payable to shareholders	10,800

Payable for shares of the fund repurchased	15,528,073

Payable for investor servicing fees (Note 2)	264,624

Payable for custodian fees (Note 2)	14,109

Payable for Trustee compensation and expenses (Note 2)	376,316

Payable for administrative services (Note 2)	8,405

Other accrued expenses	235,450

Total liabilities	16,437,777

Net assets	$1,881,945,175


REPRESENTED BY

Paid-in capital (Unlimited shares authorized) (Notes 1 and 4)	$1,883,328,413

Distributions in excess of net investment income (Note 1)	(1,609)

Accumulated net realized loss on investments (Note 1)	(1,381,629)

Total — Representing net assets applicable to capital shares outstanding	$1,881,945,175

COMPUTATION OF NET ASSET VALUE AND OFFERING PRICE

Net asset value, offering price and redemption price per class A share
($1,739,458,117 divided by 1,742,398,397 shares)	$1.00

Net asset value and offering price per class B share ($27,668,288 divided by 27,715,063 shares)*	$1.00

Net asset value and offering price per class C share ($31,073,360 divided by 31,114,742 shares)*	$1.00

Net asset value, offering price and redemption price per class M share
($31,296,274 divided by 31,343,492 shares)	$1.00

Net asset value, offering price and redemption price per class R share
($18,508,316 divided by 18,537,229 shares)	$1.00

Net asset value, offering price and redemption price per class T share
($33,940,820 divided by 33,998,820 shares)	$1.00

* Redemption price per share is equal to net asset value less any applicable contingent deferred sales charge.

The accompanying notes are an integral part of these financial statements.

Statement of operations Year ended 9/30/11


INVESTMENT INCOME

Interest (including interest income of $53,806 from investments in affiliated issuers) (Note 5)	$4,409,118

EXPENSES

Compensation of Manager (Note 2)	5,582,642

Investor servicing fees (Note 2)	3,101,317

Custodian fees (Note 2)	35,390

Trustee compensation and expenses (Note 2)	170,497

Administrative services (Note 2)	54,152

Distribution fees — Class B (Note 2)	148,772

Distribution fees — Class C (Note 2)	123,177

Distribution fees — Class M (Note 2)	47,944

Distribution fees — Class R (Note 2)	86,057

Distribution fees — Class T (Note 2)	85,026

Other	673,813

Fees waived and reimbursed by Manager (Note 2)	(5,924,605)

Total expenses	4,184,182

Expense reduction (Note 2)	(20,026)

Net expenses	4,164,156

Net investment income	244,962


Net realized gain on investments (Notes 1 and 3)	224,432

Net gain on investments	224,432

Net increase in net assets resulting from operations	$469,394

The accompanying notes are an integral part of these financial statements.

Statement of changes in net assets


DECREASE IN NET ASSETS	Year ended 9/30/11	Year ended 9/30/10

Operations:
Net investment income	$244,962	$21,149

Net realized gain (loss) on investments	224,432	(745,853)

Net increase (decrease) in net assets resulting from operations	469,394	(724,704)

Distributions to shareholders (Note 1):
From ordinary income
Net investment income

Class A	(246,692)	(1,261,261)

Class B	(4,169)	(26,733)

Class C	(3,340)	(13,426)

Class M	(4,478)	(24,426)

Class R	(2,342)	(7,889)

Class T	(4,633)	(18,187)

Decrease from capital share transactions (Note 4)	(392,018,220)	(398,180,913)

Total decrease in net assets	(391,814,480)	(400,257,539)

NET ASSETS

Beginning of year	2,273,759,655	2,674,017,194

End of year (including distributions in excess of net investment
income of $1,609 and undistributed net investment income
of $19,083, respectively)	$1,881,945,175	$2,273,759,655

The accompanying notes are an integral part of these financial statements.

Financial highlights (For a common share outstanding throughout the period)

INVESTMENT OPERATIONS:

LESS DISTRIBUTIONS:

RATIOS AND SUPPLEMENTAL DATA:

Ratio of net

investment

income

Net asset

Ratio

(loss)

value,

Net realized

Total from

From

Total return

Net assets,

of expenses

to average

beginning

Net investment

gain (loss)

investment

net investment

From

Total

Net asset value,

at net asset

end of period

to average

net assets

Period ended

of period

income (loss)

on investments

operations

income

return of capital

distributions

end of period

value (%) ^a

(in thousands)

net assets (%) ^b

(%)

Class A

September 30, 2011

$1.00

.0001

.0002

(.0001)

—

(.0001)

$1.00

.01

$1,739,458

.22 ^c

.01 ^c

September 30, 2010

1.00

.0001

(.0003)

(.0002)

(.0005)

—

(.0005)

1.00

.06

2,131,331

.32 ^c

— ^c,d

September 30, 2009

1.00

.0091

(.0001)

.0090

(.0086)

—

(.0086)

1.00

.86

2,482,270

.56 ^c,e

.98 ^c,e

September 30, 2008

1.00

.0327

(.0002)

.0325

(.0325)

(.0004)

(.0329)

1.00

3.35

3,212,674

.56 ^e

3.28 ^e

September 30, 2007

1.00

.0486 ^f

— ^g

.0486

(.0489)

—

(.0489)

1.00

5.01

3,394,996

.54 ^e

4.84 ^e,f

Class B

September 30, 2011

$1.00

.0001

.0002

(.0001)

—

(.0001)

$1.00

.01

$27,668

.22 ^c

.01 ^c

September 30, 2010

1.00

.0001

(.0003)

(.0002)

(.0005)

—

(.0005)

1.00

.06

37,121

.32 ^c

.01 ^c

September 30, 2009

1.00

.0060

(.0001)

.0059

(.0054)

—

(.0054)

1.00

.54

66,020

.91 ^c,e

.68 ^c,e

September 30, 2008

1.00

.0277

(.0002)

.0275

(.0276)

(.0003)

(.0279)

1.00

2.83

99,244

1.06 ^e

2.83 ^e

September 30, 2007

1.00

.0436 ^f

— ^g

.0436

(.0439)

—

(.0439)

1.00

4.49

117,474

1.04 ^e

4.34 ^e,f

Class C

September 30, 2011

$1.00

.0001

.0002

(.0001)

—

(.0001)

$1.00

.01

$31,073

.22 ^c

.01 ^c

September 30, 2010

1.00

.0001

(.0003)

(.0002)

(.0005)

—

(.0005)

1.00

.06

21,991

.32 ^c

— ^c,d

September 30, 2009

1.00

.0060

(.0001)

.0059

(.0054)

—

(.0054)

1.00

.54

27,757

.89 ^c,e

.62 ^c,e

September 30, 2008

1.00

.0277

(.0002)

.0275

(.0276)

(.0003)

(.0279)

1.00

2.83

30,609

1.06 ^e

2.66 ^e

September 30, 2007

1.00

.0436 ^f

— ^g

.0436

(.0439)

—

(.0439)

1.00

4.49

19,456

1.04 ^e

4.34 ^e,f

Class M

September 30, 2011

$1.00

.0001

.0002

(.0001)

—

(.0001)

$1.00

.01

$31,296

.22 ^c

.01 ^c

September 30, 2010

1.00

.0001

(.0003)

(.0002)

(.0005)

—

(.0005)

1.00

.06

35,999

.32 ^c

— ^c,d

September 30, 2009

1.00

.0080

(.0001)

.0079

(.0074)

—

(.0074)

1.00

.74

46,293

.68 ^c,e

.83 ^c,e

September 30, 2008

1.00

.0312

(.0002)

.0310

(.0310)

(.0004)

(.0314)

1.00

3.19

53,452

.71 ^e

3.07 ^e

September 30, 2007

1.00

.0471 ^f

— ^g

.0471

(.0474)

—

(.0474)

1.00

4.86

42,641

.69 ^e

4.69 ^e,f

Class R

September 30, 2011

$1.00

.0001

.0002

(.0001)

—

(.0001)

$1.00

.01

$18,508

.22 ^c

.01 ^c

September 30, 2010

1.00

.0001

(.0003)

(.0002)

(.0005)

—

(.0005)

1.00

.06

16,283

.32 ^c

— ^c,d

September 30, 2009

1.00

.0060

(.0001)

.0059

(.0054)

—

(.0054)

1.00

.54

12,589

.84 ^c,e

.43 ^c,e

September 30, 2008

1.00

.0277

(.0002)

.0275

(.0276)

(.0003)

(.0279)

1.00

2.83

5,564

1.06 ^e

2.54 ^e

September 30, 2007

1.00

.0436 ^f

— ^g

.0436

(.0439)

—

(.0439)

1.00

4.49

3,974

1.04 ^e

4.32 ^e,f

Class T

September 30, 2011

$1.00

.0001

.0002

(.0001)

—

(.0001)

$1.00

.01

$33,941

.22 ^c

.01 ^c

September 30, 2010

1.00

.0001

(.0003)

(.0002)

(.0005)

—

(.0005)

1.00

.06

31,034

.32 ^c

— ^c,d

September 30, 2009

1.00

.0073

(.0001)

.0072

(.0067)

—

(.0067)

1.00

.67

39,088

.74 ^c,e

.64 ^c,e

September 30, 2008

1.00

.0302

(.0002)

.0300

(.0300)

(.0004)

(.0304)

1.00

3.08

20,037

.81 ^e

2.93 ^e

September 30, 2007

1.00

.0461 ^f

— ^g

.0461

(.0464)

—

(.0464)

1.00

4.75

14,743

.79 ^e

4.59 ^e,f

See notes to financial highlights at the end of this section.

The accompanying notes are an integral part of these financial statements.


32	33

Financial highlights (Continued)

^a Total return assumes dividend reinvestment and does not reflect the effect of sales charges.

^b Includes amounts paid through expense offset arrangements (Note 2).

^c Reflects a voluntary waiver of certain fund expenses in effect during the period relating to the enhancement of certain annualized net yields of the fund. As a result of such waivers, the expenses of each class reflect a reduction of the following amounts as a percentage of average net assets (Note 2):


	9/30/11	9/30/10	9/30/09

Class A	0.28%	0.20%	0.02%

Class B	0.78	0.70	0.17

Class C	0.78	0.70	0.19

Class M	0.43	0.35	0.05

Class R	0.78	0.70	0.24

Class T	0.53	0.45	0.09

^d Amount represents less than 0.01% of average net assets.

^e Reflects an involuntary contractual expense limitation in effect during the period. For periods prior to September 30, 2009, certain fund expenses were waived in connection with the fund’s investment in Putnam Prime Money Market Fund. As a result of such limitation and/or waivers, the expenses of each class reflect a reduction of the following amounts:


	Percentage of
	average net assets

September 30, 2009	0.03%

September 30, 2008	<0.01

September 30, 2007	<0.01

^f Reflects a non-recurring reallocation of balance credits which amounted to $0.0003 per share and 0.03% of average net assets.

^g Amount represents less than $0.0001 per share.

The accompanying notes are an integral part of these financial statements.

Notes to financial statements 9/30/11

Note 1: Significant accounting policies

Putnam Money Market Fund (the fund), is a Massachusetts business trust, which is registered under the Investment Company Act of 1940, as amended, as a diversified open-end management investment company. The investment objective of the fund is to seek to provide as high a rate of current income that Putnam Investment Management, LLC (Putnam Management), the fund’s manager, an indirect wholly-owned subsidiary of Putnam Investments, LLC, believes is consistent with preservation of capital and maintenance of liquidity. The fund invests mainly in money market instruments that are high quality and have short-term maturities. The fund may invest without limit, and does invest significantly, in money market investments from the banking industry, such as certificates of deposit, commercial paper (including asset-backed commercial paper), U.S. government debt and repurchase agreements, corporate obligations and bankers acceptances. Putnam Management may consider, among other factors, credit, interest rate, and prepayment risks, as well as general market conditions, when deciding whether to buy or sell investments.

The fund offers class A, class B, class C, class M, class R and class T shares. Each class of shares is sold without a front-end sales charge. Class A, class M, class R and class T shares also are generally not subject to a contingent deferred sales charge. In addition to the standard offering of class A shares, they are also sold to certain college savings plans and other Putnam funds. Class B shares convert to class A shares after approximately eight years and are subject to a contingent deferred sales charge on certain redemptions. Class C shares have a one-year 1.00% contingent deferred sales charge on certain redemptions and do not convert to class A shares. Class R shares are not available to all investors. The expenses for class A, class B, class C, class M, class R and class T shares may differ based on each class’ distribution fee, which is identified in Note 2.

Investment income, realized gains and losses and expenses of the fund are borne pro-rata based on the relative net assets of each class to the total net assets of the fund, except that each class bears expenses unique to that class (including the distribution fees applicable to such classes). Each class votes as a class only with respect to its own distribution plan or other matters on which a class vote is required by law or determined by the Trustees. Shares of each class would receive their pro-rata share of the net assets of the fund, if the fund were liquidated. In addition, the Trustees declare separate dividends on each class of shares.

In the normal course of business, the fund enters into contracts that may include agreements to indemnify another party under given circumstances. The fund’s maximum exposure under these arrangements is unknown as this would involve future claims that may be, but have not yet been, made against the fund. However, the fund’s management team expects the risk of material loss to be remote.

The following is a summary of significant accounting policies consistently followed by the fund in the preparation of its financial statements. The preparation of financial statements is in conformity with accounting principles generally accepted in the United States of America and requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities in the financial statements and the reported amounts of increases and decreases in net assets from operations. Actual results could differ from those estimates. Subsequent events after the Statement of assets and liabilities date through the date that the financial statements were issued have been evaluated in the preparation of the financial statements. Unless otherwise noted, the “reporting period” represents the period from October 1, 2010 through September 30, 2011.

A) Security valuation The valuation of the fund’s portfolio instruments is determined by means of the amortized cost method (which approximates market value) as set forth in Rule 2a–7 under the Investment Company Act of 1940. The amortized cost of an instrument is determined by valuing it at its original cost and thereafter amortizing any discount or premium from its face value at a constant rate until maturity and is generally categorized as a Level 2 security.

B) Joint trading account Pursuant to an exemptive order from the Securities and Exchange Commission (the SEC), the fund may transfer uninvested cash balances into a joint trading account along with the cash of other registered investment companies and certain other accounts managed by Putnam Management. These balances may be invested in issues of short-term investments having maturities of up to 90 days.

C) Repurchase agreements The fund, or any joint trading account, through its custodian, receives delivery of the underlying securities, the market value of which at the time of purchase is required to be in an amount at least equal to the resale price, including accrued interest. Collateral for certain tri-party repurchase agreements is held

at the counterparty’s custodian in a segregated account for the benefit of the fund and the counterparty. Putnam Management is responsible for determining that the value of these underlying securities is at all times at least equal to the resale price, including accrued interest. In the event of default or bankruptcy by the other party to the agreement, retention of the collateral may be subject to legal proceedings.

D) Security transactions and related investment income Security transactions are recorded on the trade date (the date the order to buy or sell is executed). Interest income is recorded on the accrual basis. Premiums and discounts from purchases of short-term investments are amortized/accreted at a constant rate until maturity. Gains or losses on securities sold are determined on the identified cost basis.

E) Interfund lending The fund, along with other Putnam funds, may participate in an interfund lending program pursuant to an exemptive order issued by the SEC. This program allows the fund to lend to other Putnam funds that permit such transactions. Interfund lending transactions are subject to each fund’s investment policies and borrowing and lending limits. Interest earned or paid on the interfund lending transaction will be based on the average of certain current market rates. During the reporting period, the fund did not utilize the program.

F) Line of credit The fund participates, along with other Putnam funds, in a $325 million unsecured committed line of credit and a $185 million unsecured uncommitted line of credit, both provided by State Street Bank and Trust Company (State Street). Borrowings may be made for temporary or emergency purposes, including the funding of shareholder redemption requests and trade settlements. Interest is charged to the fund based on the fund’s borrowing at a rate equal to the Federal Funds rate plus 1.25% for the committed line of credit and the Federal Funds rate plus 1.30% for the uncommitted line of credit. A closing fee equal to 0.02% of the committed line of credit and $50,000 for the uncommitted line of credit has been paid by the participating funds. In addition, a commitment fee of 0.13% per annum on any unutilized portion of the committed line of credit is allocated to the participating funds based on their relative net assets and paid quarterly. During the reporting period, the fund had no borrowings against these arrangements.

G) Federal taxes It is the policy of the fund to distribute all of its taxable income within the prescribed time period and otherwise comply with the provisions of the Internal Revenue Code of 1986, as amended (the Code), applicable to regulated investment companies. It is also the intention of the fund to distribute an amount sufficient to avoid imposition of any excise tax under Section 4982 of the Code. The fund is subject to the provisions of Accounting Standards Codification ASC 740 Income Taxes (ASC 740). ASC 740 sets forth a minimum threshold for financial statement recognition of the benefit of a tax position taken or expected to be taken in a tax return. The fund did not have a liability to record for any unrecognized tax benefits in the accompanying financial statements. No provision has been made for federal taxes on income, capital gains or unrealized appreciation on securities held nor for excise tax on income and capital gains. Each of the fund’s federal tax returns for the prior three fiscal years remains subject to examination by the Internal Revenue Service.

At September 30, 2011, the fund had a capital loss carryover of $1,381,629 available to the extent allowed by the Code to offset future net capital gain, if any. The amounts of the carryovers and the expiration dates are:


Loss carryover		Expiration

$39,633		September 30, 2016

820,576		September 30, 2017

521,420		September 30, 2019

Under the recently enacted Regulated Investment Company Modernization Act of 2010, the fund will be permitted to carry forward capital losses incurred in taxable years beginning after December 22, 2010 for an unlimited period. However, any losses incurred during those future years will be required to be utilized prior to the losses incurred in pre-enactment tax years. As a result of this ordering rule, pre-enactment capital loss carryforwards may be more likely to expire unused. Additionally, post-enactment capital losses that are carried forward will retain their character as either short-term or long-term capital losses rather than being considered all short-term as under previous law.

H) Distributions to shareholders Income dividends are recorded daily by the fund and are paid monthly. Distributions from capital gains, if any, are paid at least annually. The amount and character of income and gains to be distributed are determined in accordance with income tax regulations, which may differ from generally accepted

accounting principles. For the reporting period ended, there were no temporary or permanent differences. Reclassifications are made to the fund’s capital accounts to reflect income and gains available for distribution (or available capital loss carryovers) under income tax regulations. For the reporting period ended, the fund required no such reclassifications.

The tax basis components of distributable earnings as of the close of the reporting period were as follows:


Undistributed ordinary income	$9,187
Capital loss carryforward	(1,381,629)

The aggregate identified cost on a financial reporting and tax basis is the same.

Note 2: Management fee, administrative services and other transactions

The fund pays Putnam Management a management fee (based on the fund’s average net assets and computed and paid monthly) at annual rates that may vary based on the average of the aggregate net assets of most open-end funds, as defined in the fund’s management contract, sponsored by Putnam Management. Such annual rates may vary as follows:


0.440%	of the first $5 billion,
0.390%	of the next $5 billion,
0.340%	of the next $10 billion,
0.290%	of the next $10 billion,
0.240%	of the next $50 billion,
0.220%	of the next $50 billion,
0.210%	of the next $100 billion,
0.205%	of any excess thereafter.

Putnam Management has contractually agreed, through June 30, 2012, to waive fees or reimburse the fund’s expenses to the extent necessary to limit the cumulative expenses of the fund, exclusive of brokerage, interest, taxes, investment-related expenses, extraordinary expenses and payments under the fund’s investor servicing contract, investment management contract and distribution plans, on a fiscal year-to-date basis to an annual rate of 0.20% of the fund’s average net assets over such fiscal year-to-date period. During the reporting period, the fund’s expenses were not reduced as a result of this limit.

Putnam Management may from time to time voluntarily undertake to waive fees and/or reimburse certain fund expenses in order to enhance the annualized net yield for the fund. Any such waiver or reimbursement would be voluntary and may be modified or discontinued by Putnam Management at any time without notice. During the reporting period, the fund’s expenses were reduced by $5,924,605 as a result of this limit, and the net yield for the reporting period was 0.01%. This includes the following amounts per class of class specific distribution fees from the fund:


	Distribution fee waived

Class A	$—

Class B	148,772

Class C	123,177

Class M	47,944

Class R	86,057

Class T	85,026

Putnam Investments Limited (PIL), an affiliate of Putnam Management, is authorized by the Trustees to manage a separate portion of the assets of the fund as determined by Putnam Management from time to time. Putnam Management pays a quarterly sub-management fee to PIL for its services at an annual rate of 0.40% of the average net assets of the portion of the fund managed by PIL.

The fund reimburses Putnam Management an allocated amount for the compensation and related expenses of certain officers of the fund and their staff who provide administrative services to the fund. The aggregate amount of all such reimbursements is determined annually by the Trustees.

Custodial functions for the fund’s assets are provided by State Street. Custody fees are based on the fund’s asset level, the number of its security holdings and transaction volumes.

Putnam Investor Services, Inc., an affiliate of Putnam Management, provides investor servicing agent functions to the fund. Putnam Investor Services, Inc. received fees for investor servicing based on the fund’s retail asset level, the number of shareholder accounts in the fund and the level of defined contribution plan assets in the fund. Investor servicing fees will not exceed an annual rate of 0.375% of the fund’s average net assets. The amounts incurred for investor servicing agent functions during the reporting period are included in Investor servicing fees in the Statement of operations.

The fund has entered into expense offset arrangements with Putnam Investor Services, Inc. and State Street whereby Putnam Investor Services, Inc.’s and State Street’s fees are reduced by credits allowed on cash balances. For the reporting period, the fund’s expenses were reduced by $20,026 under the expense offset arrangements.

Each independent Trustee of the fund receives an annual Trustee fee, of which $1,251, as a quarterly retainer, has been allocated to the fund, and an additional fee for each Trustees meeting attended. Trustees also are reimbursed for expenses they incur relating to their services as Trustees.

The fund has adopted a Trustee Fee Deferral Plan (the Deferral Plan) which allows the Trustees to defer the receipt of all or a portion of Trustees fees payable on or after July 1, 1995. The deferred fees remain invested in certain Putnam funds until distribution in accordance with the Deferral Plan.

The fund has adopted an unfunded noncontributory defined benefit pension plan (the Pension Plan) covering all Trustees of the fund who have served as a Trustee for at least five years and were first elected prior to 2004. Benefits under the Pension Plan are equal to 50% of the Trustee’s average annual attendance and retainer fees for the three years ended December 31, 2005. The retirement benefit is payable during a Trustee’s lifetime, beginning the year following retirement, for the number of years of service through December 31, 2006. Pension expense for the fund is included in Trustee compensation and expenses in the Statement of operations. Accrued pension liability is included in Payable for Trustee compensation and expenses in the Statement of assets and liabilities. The Trustees have terminated the Pension Plan with respect to any Trustee first elected after 2003.

The fund has adopted distribution plans (the Plans) with respect to its class B, class C, class M, class R and class T shares pursuant to Rule 12b–1 under the Investment Company Act of 1940. The purpose of the Plans is to compensate Putnam Retail Management Limited Partnership, a wholly-owned subsidiary of Putnam Investments, LLC and Putnam Retail Management GP, Inc., for services provided and expenses incurred in distributing shares of the fund. The Plans provide for payments by the fund to Putnam Retail Management Limited Partnership at an annual rate of up to 0.75%, 1.00%, 1.00%, 1.00% and 0.35% of the average net assets attributable to class B, class C, class M, class R and class T shares, respectively. The Trustees have approved payment by the fund at an annual rate of 0.50%, 0.50%, 0.15%, 0.50% and 0.25% of the average net assets attributable to class B, class C, class M, class R and class T shares, respectively.

For the reporting period, Putnam Retail Management Limited Partnership, acting as underwriter, received net commissions of $77,015 and $7,125, respectively, in contingent deferred sales charges from redemptions of class B and class C shares purchased by exchange from another Putnam fund.

A deferred sales charge of up to 1.00% for class A and class T shares and up to 0.15% for class M shares may be assessed on certain redemptions. For the reporting period, Putnam Retail Management Limited Partnership, acting as underwriter, received no monies in contingent deferred sales charges from redemptions of class A, class M or class T shares purchased by exchange from another Putnam fund.

Note 3: Purchases and sales of securities

During the reporting period, cost of purchases and proceeds from sales (including maturities) of investment securities (all short-term obligations) aggregated $147,197,736,241 and $147,582,509,718, respectively.

Note 4: Capital shares

At the close of the reporting period, there was an unlimited number of shares of beneficial interest authorized. Transactions in capital shares were as follows:


	Year ended 9/30/11		Year ended 9/30/10

Class A	Shares	Amount	Shares	Amount

Shares sold	990,528,207	$990,528,207	1,180,161,205	$1,180,161,205

Shares issued in connection with
reinvestment of distributions	213,881	213,881	1,212,178	1,212,178

	990,742,088	990,742,088	1,181,373,383	1,181,373,383

Shares repurchased	(1,382,829,728)	(1,382,829,728)	(1,530,355,684)	(1,530,355,684)

Net decrease	(392,087,640)	$(392,087,640)	(348,982,301)	$(348,982,301)


	Year ended 9/30/11		Year ended 9/30/10

Class B	Shares	Amount	Shares	Amount

Shares sold	18,097,439	$18,097,439	26,963,672	$26,963,672

Shares issued in connection with
reinvestment of distributions	3,174	3,174	23,770	23,770

	18,100,613	18,100,613	26,987,442	26,987,442

Shares repurchased	(27,561,663)	(27,561,663)	(55,861,947)	(55,861,947)

Net decrease	(9,461,050)	$(9,461,050)	(28,874,505)	$(28,874,505)


	Year ended 9/30/11		Year ended 9/30/10

Class C	Shares	Amount	Shares	Amount

Shares sold	37,289,002	$37,289,002	19,900,410	$19,900,410

Shares issued in connection with
reinvestment of distributions	2,891	2,891	12,316	12,316

	37,291,893	37,291,893	19,912,726	19,912,726

Shares repurchased	(28,200,918)	(28,200,918)	(25,659,403)	(25,659,403)

Net increase (decrease)	9,090,975	$9,090,975	(5,746,677)	$(5,746,677)


	Year ended 9/30/11		Year ended 9/30/10

Class M	Shares	Amount	Shares	Amount

Shares sold	27,735,752	$27,735,752	37,346,778	$37,346,778

Shares issued in connection with
reinvestment of distributions	3,841	3,841	23,205	23,205

	27,739,593	27,739,593	37,369,983	37,369,983

Shares repurchased	(32,448,948)	(32,448,948)	(47,632,333)	(47,632,333)

Net decrease	(4,709,355)	$(4,709,355)	(10,262,350)	$(10,262,350)


	Year ended 9/30/11		Year ended 9/30/10

Class R	Shares	Amount	Shares	Amount

Shares sold	15,430,410	$15,430,410	19,239,520	$19,239,520

Shares issued in connection with
reinvestment of distributions	2,274	2,274	7,778	7,778

	15,432,684	15,432,684	19,247,298	19,247,298

Shares repurchased	(13,202,800)	(13,202,800)	(15,535,185)	(15,535,185)

Net increase	2,229,884	$2,229,884	3,712,113	$3,712,113


	Year ended 9/30/11		Year ended 9/30/10

Class T	Shares	Amount	Shares	Amount

Shares sold	32,650,905	$32,650,905	17,248,155	$17,248,155

Shares issued in connection with
reinvestment of distributions	4,465	4,465	18,031	18,031

	32,655,370	32,655,370	17,266,186	17,266,186

Shares repurchased	(29,736,404)	(29,736,404)	(25,293,379)	(25,293,379)

Net increase (decrease)	2,918,966	$2,918,966	(8,027,193)	$(8,027,193)

Note 5: Investment in Putnam Money Market Liquidity Fund

The fund invested in Putnam Money Market Liquidity Fund, an open-end management investment company managed by Putnam Management. Investments in Putnam Money Market Liquidity Fund are valued at its closing net asset value each business day. Income distributions earned by the fund are recorded as interest income in the Statement of operations and totaled $53,806 for the reporting period. During the reporting period, cost of purchases and proceeds of sales of investments in Putnam Money Market Liquidity Fund aggregated $498,215,560 and $401,169,543, respectively. Management fees charged to Putnam Money Market Liquidity Fund have been waived by Putnam Management.

Note 6: Market and credit risk

In the normal course of business, the fund trades financial instruments and enters into financial transactions where risk of potential loss exists due to changes in the market (market risk) or failure of the contracting party to the transaction to perform (credit risk). The fund may be exposed to additional credit risk that an institution or other entity with which the fund has unsettled or open transactions will default.

About the Trustees


Independent Trustees
Name
Year of birth
Position held	Principal occupations during past five years	Other directorships

Ravi Akhoury	Advisor to New York Life Insurance Company. Trustee of	Jacob Ballas Capital
Born 1947	American India Foundation and of the Rubin Museum.	India, a non-banking
Trustee since 2009	From 1992 to 2007, was Chairman and CEO of MacKay	finance company
	Shields, a multi-product investment management firm	focused on private
	with over $40 billion in assets under management.	equity advisory services;
		RAGE Frameworks,
		Inc., a private software
		company

Barbara M. Baumann	President and Owner of Cross Creek Energy Corporation,	SM Energy Company, a
Born 1955	a strategic consultant to domestic energy firms and direct	domestic exploration
Trustee since 2010	investor in energy projects. Trustee of Mount Holyoke	and production
	College and member of the Investment Committee for the	company; UniSource
	college’s endowment. Former Chair and current board	Energy Corporation,
	member of Girls Incorporated of Metro Denver. Member of	an Arizona utility; CVR
	the Finance Committee, The Children’s Hospital of Denver.	Energy, a petroleum
		refiner and fertilizer
		manufacturer

Jameson A. Baxter	President of Baxter Associates, Inc., a private investment	None
Born 1943	firm. Chair of Mutual Fund Directors Forum. Chair Emeritus
Trustee since 1994,	of the Board of Trustees of Mount Holyoke College.
Vice Chair from 2005	Director of the Adirondack Land Trust and Trustee of the
to 2011, and Chair	Nature Conservancy’s Adirondack Chapter.
since 2011

Charles B. Curtis	Former President and Chief Operating Officer of the	Edison International;
Born 1940	Nuclear Threat Initiative, a private foundation dealing	Southern California
Trustee since 2001	with national security issues. Senior Advisor to the Center	Edison
	for Strategic and International Studies. Member of the
	Council on Foreign Relations.

Robert J. Darretta	Health Care Industry Advisor to Permira, a global private	UnitedHealth
Born 1946	equity firm. Until April 2007, was Vice Chairman of the	Group, a diversified
Trustee since 2007	Board of Directors of Johnson & Johnson. Served as	health-care company
	Johnson & Johnson’s Chief Financial Officer for a decade.

John A. Hill	Founder and Vice-Chairman of First Reserve	Devon Energy
Born 1942	Corporation, the leading private equity buyout firm	Corporation, a leading
Trustee since 1985 and	focused on the worldwide energy industry. Serves as a	independent natural gas
Chairman from 2000	Trustee and Chairman of the Board of Trustees of Sarah	and oil exploration and
to 2011	Lawrence College. Also a member of the Advisory Board	production company
	of the Millstein Center for Corporate Governance and
	Performance at the Yale School of Management.


Name
Year of birth
Position held	Principal occupations during past five years	Other directorships

Paul L. Joskow	Economist and President of the Alfred P. Sloan	TransCanada
Born 1947	Foundation, a philanthropic institution focused primarily	Corporation, an energy
Trustee since 1997	on research and education on issues related to science,	company focused on
	technology, and economic performance. Elizabeth and	natural gas transmission
	James Killian Professor of Economics, Emeritus at the	and power services;
	Massachusetts Institute of Technology (MIT). Prior to	Exelon Corporation, an
	2007, served as the Director of the Center for Energy and	energy company focused
	Environmental Policy Research at MIT.	on power services

Kenneth R. Leibler	Founder and former Chairman of Boston Options	Northeast Utilities,
Born 1949	Exchange, an electronic marketplace for the trading	which operates New
Trustee since 2006	of derivative securities. Vice Chairman of the Board of	England’s largest energy
	Trustees of Beth Israel Deaconess Hospital in Boston,	delivery system
	Massachusetts. Until November 2010, director of Ruder
	Finn Group, a global communications and advertising firm.

Robert E. Patterson	Senior Partner of Cabot Properties, LP and Co-Chairman	None
Born 1945	of Cabot Properties, Inc., a private equity firm investing in
Trustee since 1984	commercial real estate. Past Chairman and Trustee of the
	Joslin Diabetes Center.

George Putnam, III	Chairman of New Generation Research, Inc., a publisher	None
Born 1951	of financial advisory and other research services, and
Trustee since 1984	founder and President of New Generation Advisors, LLC,
	a registered investment advisor to private funds.
	Director of The Boston Family Office, LLC, a registered
	investment advisor.

W. Thomas Stephens	Retired as Chairman and Chief Executive Officer of Boise	TransCanadaPipelines
Born 1942	Cascade, LLC, a paper, forest products, and timberland	Ltd., an energy
Trustee from 1997 to 2008	assets company, in December 2008. Prior to 2010,	infrastructure company
and since 2009	Director of Boise Inc., a manufacturer of paper and
	packaging products.

Interested Trustee

Robert L. Reynolds*	President and Chief Executive Officer of Putnam	None
Born 1952	Investments since 2008. Prior to joining Putnam
Trustee since 2008 and	Investments, served as Vice Chairman and Chief
President of the Putnam	Operating Officer of Fidelity Investments from
Funds since July 2009	2000 to 2007.

The address of each Trustee is One Post Office Square, Boston, MA 02109.

As of September 30, 2011, there were 107 Putnam funds. All Trustees serve as Trustees of all Putnam funds.

Each Trustee serves for an indefinite term, until his or her resignation, retirement at age 72, removal, or death.

* Mr. Reynolds is an “interested person” (as defined in the Investment Company Act of 1940) of the fund, Putnam Management, and/or Putnam Retail Management. He is President and Chief Executive Officer of Putnam Investments, as well as the President of your fund and each of the other Putnam funds.

Officers

In addition to Robert L. Reynolds, the other officers of the fund are shown below:


Jonathan S. Horwitz (Born 1955)	Robert T. Burns (Born 1961)
Executive Vice President, Principal Executive	Vice President and Chief Legal Officer
Officer, Treasurer and Compliance Liaison	Since 2011
Since 2004	General Counsel, Putnam Investments and
	Putnam Management
Steven D. Krichmar (Born 1958)
Vice President and Principal Financial Officer	James P. Pappas (Born 1953)
Since 2002	Vice President
Chief of Operations, Putnam Investments and	Since 2004
Putnam Management	Director of Trustee Relations,
	Putnam Investments and Putnam Management
Janet C. Smith (Born 1965)
Vice President, Assistant Treasurer and	Judith Cohen (Born 1945)
Principal Accounting Officer	Vice President, Clerk and Assistant Treasurer
Since 2007	Since 1993
Director of Fund Administration Services,
Putnam Investments and Putnam Management	Michael Higgins (Born 1976)
	Vice President, Senior Associate Treasurer and
Beth S. Mazor (Born 1958)	Assistant Clerk
Vice President	Since 2010
Since 2002	Manager of Finance, Dunkin’ Brands (2008–
Manager of Trustee Relations, Putnam	2010); Senior Financial Analyst, Old Mutual Asset
Investments and Putnam Management	Management (2007–2008); Senior Financial
	Analyst, Putnam Investments (1999–2007)
Robert R. Leveille (Born 1969)
Vice President and Chief Compliance Officer	Nancy E. Florek (Born 1957)
Since 2007	Vice President, Assistant Clerk, Assistant
Chief Compliance Officer, Putnam Investments,	Treasurer and Proxy Manager
Putnam Management, and Putnam Retail	Since 2000
Management
	Susan G. Malloy (Born 1957)
Mark C. Trenchard (Born 1962)	Vice President and Assistant Treasurer
Vice President and BSA Compliance Officer	Since 2007
Since 2002	Director of Accounting & Control Services,
Director of Operational Compliance,	Putnam Management
Putnam Investments and Putnam
Retail Management

The principal occupations of the officers for the past five years have been with the employers as shown above although in some cases, they have held different positions with such employers. The address of each Officer is One Post Office Square, Boston, MA 02109.

Fund information

Founded over 70 years ago, Putnam Investments was built around the concept that a balance between risk and reward is the hallmark of a well-rounded financial program. We manage over 100 funds across income, value, blend, growth, asset allocation, absolute return, and global sector categories.


Investment Manager	Paul L. Joskow	Mark C. Trenchard
Putnam Investment	Kenneth R. Leibler	Vice President and
Management, LLC	Robert E. Patterson	BSA Compliance Officer
One Post Office Square	George Putnam, III
Boston, MA 02109	Robert L. Reynolds	Robert T. Burns
	W. Thomas Stephens	Vice President and
Investment Sub-Manager		Chief Legal Officer
Putnam Investments Limited	Officers
57–59 St James’s Street	Robert L. Reynolds	James P. Pappas
London, England SW1A 1LD	President	Vice President

Marketing Services	Jonathan S. Horwitz	Judith Cohen
Putnam Retail Management	Executive Vice President,	Vice President, Clerk and
One Post Office Square	Principal Executive	Assistant Treasurer
Boston, MA 02109	Officer, Treasurer and
	Compliance Liaison	Michael Higgins
Custodian		Vice President, Senior Associate
State Street Bank	Steven D. Krichmar	Treasurer and Assistant Clerk
and Trust Company	Vice President and
	Principal Financial Officer	Nancy E. Florek
Legal Counsel		Vice President, Assistant Clerk,
Ropes & Gray LLP	Janet C. Smith	Assistant Treasurer and
	Vice President, Assistant	Proxy Manager
Independent Registered	Treasurer and Principal
Public Accounting Firm	Accounting Officer	Susan G. Malloy
PricewaterhouseCoopers LLP		Vice President and
	Beth S. Mazor	Assistant Treasurer
Trustees	Vice President
Jameson A. Baxter, Chair
Ravi Akhoury	Robert R. Leveille
Barbara M. Baumann	Vice President and
Charles B. Curtis	Chief Compliance Officer
Robert J. Darretta
John A. Hill

This report is for the information of shareholders of Putnam Money Market Fund. It may also be used as sales literature when preceded or accompanied by the current prospectus, the most recent copy of Putnam’s Quarterly Performance Summary, and Putnam’s Quarterly Ranking Summary. For more recent performance, please visit putnam.com. Investors should carefully consider the investment objectives, risks, charges, and expenses of a fund, which are described in its prospectus. For this and other information or to request a prospectus or summary prospectus, call 1-800-225-1581 toll free. Please read the prospectus carefully before investing. The fund’s Statement of Additional Information contains additional information about the fund’s Trustees and is available without charge upon request by calling 1-800-225-1581.


Fiscal year ended	Audit Fees	Audit-Related Fees	Tax Fees	All Other Fees


September 30, 2011	$122,179	$--	$4,270	$ —
September 30, 2010	$150,747	$--	$2,591	$3,340*


Fiscal year ended	Audit-Related Fees	Tax Fees	All Other Fees	Total Non-Audit Fees


September 30, 2011	$ —	$112,505	$ —	$ —

September 30, 2010	$ —	$243,601	$ —	$ —


	CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES


	Exact name of registrant as specified in charter:	Putnam Money Market Fund


	Address of principal executive offices:	One Post Office Square, Boston, Massachusetts 02109


	Name and address of agent for service:	Beth S. Mazor, Vice President One Post Office Square Boston, Massachusetts 02109


	Copy to:	John W. Gerstmayr, Esq. Ropes & Gray LLP 800 Boylston Street Boston, Massachusetts 02199-3600


	Registrant’s telephone number, including area code:	(617) 292-1000


	Date of reporting period:	October 1, 2010 — September 30, 2011


	The following is a copy of the report transmitted to stockholders pursuant to Rule 30e-1 under the Investment Company Act of 1940:


Message from the Trustees	1

About the fund	2

Performance snapshot	4

Interview with your fund’s portfolio managers	5

Your fund’s performance	10

Your fund’s expenses	11

Terms and definitions	13

Trustee approval of management contract	14

Other information for shareholders	18

Financial statements	19

Federal tax information	41

About the Trustees	42

Officers	44


	The following table presents fees billed in each of the last two fiscal years for services rendered to the fund by the fund’s independent auditor:


	UNITED STATES SECURITIES AND EXCHANGE COMMISSION


	FORM N-CSR


	Item 1. Report to Stockholders:


	For the fiscal years ended September 30, 2011 and September 30, 2010, the fund’s independent auditor billed aggregate non-audit fees in the amounts of $263,101 and $405,584 respectively, to the fund, Putnam Management and any entity controlling, controlled by or under common control with Putnam Management that provides ongoing services to the fund.


	Audit Fees represent fees billed for the fund’s last two fiscal years relating to the audit and review of the financial statements included in annual reports and registration statements, and other services that are normally provided in connection with statutory and regulatory filings or engagements.


	Audit-Related Fees represent fees billed in the fund’s last two fiscal years for services traditionally performed by the fund’s auditor, including accounting consultation for proposed transactions or concerning financial accounting and reporting standards and other audit or attest services not required by statute or regulation.


	Tax Fees represent fees billed in the fund’s last two fiscal years for tax compliance, tax planning and tax advice services. Tax planning and tax advice services include assistance with tax audits, employee benefit plans and requests for rulings or technical advice from taxing authorities.


	All Other Fees represent fees billed for services relating to procedures necessitated by regulatory and litigation matters.


	Pre-Approval Policies of the Audit and Compliance Committee. The Audit and Compliance Committee of the Putnam funds has determined that, as a matter of policy, all work performed for the funds by the funds’ independent auditors will be pre-approved by the Committee itself and thus will generally not be subject to pre-approval procedures.


	The registrant’s schedule of investments in unaffiliated issuers is included in the report to shareholders in Item 1 above.


	Item 7. Disclosure of Proxy Voting Policies and Procedures For Closed-End Management Investment Companies:


	Item 8. Portfolio Managers of Closed-End Investment Companies


	Item 9. Purchases of Equity Securities by Closed-End Management Investment Companies and Affiliated Purchasers:


	Item 10. Submission of Matters to a Vote of Security Holders:


	(b) Changes in internal control over financial reporting: Not applicable


	(a)(1) The Code of Ethics of The Putnam Funds, which incorporates the Code of Ethics of Putnam Investments, is filed herewith.


	(a)(2) Separate certifications for the principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Investment Company Act of 1940, as amended, are filed herewith.


	(b) The certifications required by Rule 30a-2(b) under the Investment Company Act of 1940, as amended, are filed herewith.


	Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


	/s/Janet C. Smith Janet C. Smith Principal Accounting Officer


	/s/Jonathan S. Horwitz Jonathan S. Horwitz Principal Executive Officer


	/s/Steven D. Krichmar Steven D. Krichmar Principal Financial Officer