American Funds U.S. Government Money Market Fund (AFAXX) N-CSR Certified annual shareholder report (management investment company)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

Certified Shareholder Report of

Registered Management Investment Companies

Investment Company Act File Number: 811-22277

American Funds Money Market Fund

(Exact Name of Registrant as Specified in Charter)

333 South Hope Street

Los Angeles, California 90071

(Address of Principal Executive Offices)

Registrant's telephone number, including area code: (213) 486-9200

Date of fiscal year end: September 30

Date of reporting period: September 30, 2015

Steven I. Koszalka

American Funds Money Market Fund

333 South Hope Street

Los Angeles, California 90071

(Name and Address of Agent for Service)

ITEM 1 – Reports to Stockholders

Preserving capital and
maintaining liquidity in
volatile markets

American Funds
Money Market Fund^®   Annual report
for the year ended
September 30, 2015

American Funds Money Market Fund seeks to provide you with a way to earn income on your cash reserves while preserving capital and maintaining liquidity. The fund is a money market fund that seeks to preserve the value of your investment at $1.00 per share.

This fund is one of more than 40 offered by one of the nation’s largest mutual fund families, American Funds, from Capital Group. For more than 80 years, Capital has invested with a long-term focus based on thorough research and attention to risk.

Figures shown in this report are past results for Class A shares and are not predictive of results in future periods. Current and future results may be lower or higher than those shown. Investment returns will vary.

You could lose money by investing in the fund. Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The fund’s sponsor has no legal obligation to provide financial support to the fund, and you should not expect that the sponsor will provide financial support to the fund at any time. For current information and month-end results, visit americanfunds.com.

Here are the average annual total returns on a $1,000 investment with all distributions reinvested for periods ended September 30, 2015:

	1 year	5 years	Lifetime (since 5/1/09)
Class A shares	0.00%	0.00%	0.00%

For other share class results, visit americanfunds.com and americanfundsretirement.com.

The total annual fund operating expense ratio is 0.38% for Class A shares as of the prospectus dated December 1, 2015 (unaudited).

Investment results assume all distributions are reinvested and reflect applicable fees and expenses. Although the fund has plans of distribution for some share classes, the fund is currently suspending certain distribution payments in this low interest rate environment. Should payments commence, the fund’s investment results will be lower. Visit americanfunds.com for more information.

The fund’s annualized seven-day yield for Class A shares as of October 31, 2015, calculated in accordance with the U.S. Securities and Exchange Commission (SEC) formula, was 0.00%. The annualized seven-day SEC yield more accurately reflects the fund’s current earnings than does the fund’s return.

The return of principal for money market funds is not guaranteed. Fund shares are subject to the same interest rate, inflation and credit risks associated with the underlying holdings in the fund. Money market issuer ratings, which typically range from A-1/P-1 (highest) to A-3/P-3 (lowest), are assigned by credit rating agencies such as Standard & Poor’s, Moody’s and/or Fitch as an indication of an issuer’s creditworthiness. Refer to the fund prospectus and the Risk Factors section of this report for more information on these and other risks associated with investing in the fund.

Contents
1	Letter to investors
3	Investment portfolio
6	Financial statements
21	Board of trustees and other officers

Fellow investors:

We’re pleased to present this annual report for American Funds Money Market Fund. During its fiscal year ended September 30, 2015, the fund maintained a net asset value (NAV) of $1.00 per share. Its annualized seven-day yield, as calculated in accordance with the U.S. Securities and Exchange Commission (SEC) formula, was 0.0% as of that date.

With short-term interest rates anchored near 0%, it was a challenge to find yield. Against this difficult backdrop, the fund continued to strive toward its objective of preserving principal and maintaining liquidity. As equity market volatility flared in the summer months, the fund served as a conservative counterbalance.

As noted in last year’s annual report, the SEC has announced changes to the rules governing money market funds. In response to these new rules, the fund will become a government money market fund. Please read on for more information.

The economy

U.S. gross domestic product (GDP) expanded slightly in the first quarter of 2015, as growth was hampered by particularly harsh winter weather and a West Coast port workers dispute. The pace picked up sharply in the second quarter, as GDP increased 3.9% thanks to an upturn in exports and accelerated spending by state and local governments. Third quarter GDP advanced at an estimated 1.5%. Job growth averaged about 260,000 positions per month in 2014, before slowing to slightly more than 160,000 each month for the three-month period ended in September.

Interest rates and the Federal Reserve

As the U.S. economy expanded and the unemployment rate declined, the Federal Reserve appeared poised to raise interest rates. However, its plans were upended in the summer as China’s decelerating economy, softness in the U.S. job market and turbulence in the equity markets caused the Fed to hold rates steady. The target federal funds rate remained near 0%, where it has stood since 2008. The Fed may still raise rates before the end of the calendar year, but in the face of ongoing economic uncertainty the timing remains difficult to predict.

Money market fund reform

In July 2014, the SEC adopted amendments that impose new requirements on money market mutual funds. The new rules

Your fund’s annualized seven-day SEC yield as of September 30, 2015*

American Funds Money Market Fund (Class A shares) 0.00%

* The annualized seven-day SEC yield more accurately reflects the fund’s current earnings than its 30-day yield or total return.

American Funds Money Market Fund 1

A counterbalance
to market volatility

are designed to address concerns that money market funds may contribute to financial instability during periods of market stress. The most significant changes become effective on October 14, 2016.

The amendments will reflect new definitions for government and retail money market funds, and will require all money market funds — except retail prime and government money market funds — to price and transact at a floating net asset value. In addition, all nongovernment money market funds must implement a process to administer liquidity fees and halt withdrawals when fund liquidity levels fall below a specified threshold.

Changes to the fund

The SEC rule provides an exemption from the floating NAV requirement for U.S. government money market funds. As we believe many American Funds Money Market Fund investors desire a fund that offers a stable net asset value and because the fund already invests primarily in U.S. government securities, we’ve decided to formally convert it to a government money fund. As such, the fund will be required to invest 99.5% of its assets in qualifying government securities and be exempt from the floating NAV requirement. Given the government nature of the fund, we believe it is not necessary to implement a mechanism for redemption gates or liquidity fees. Accordingly, we expect the impact to the fund will be minimal. We will change the name to American Funds U.S. Government Money Market Fund^SM. We anticipate this change will be effective on or about April 1, 2016.

Shareholders with the check writing option on their Class A share retail accounts will still be able to write checks. The fund name will be updated on new checks, but existing checks will continue to be accepted as the underlying bank account and fund number detail will not change. Additional checks can be ordered as needed using the existing processes.

The fund’s objective and portfolio

The fund continues to be prudently managed for its shareholders. Its objectives are to preserve capital, maintain liquidity and provide income to the extent possible, while maintaining a stable NAV of $1.00. The fund is primarily composed of short-term investments. At the end of the reporting period, the fund’s weighted average maturity was 50 days.

The fund’s portfolio is gradually being adjusted in anticipation of the new requirements of a government money market fund. As of September 30, 2015, nearly 98% of fund holdings were invested in U.S. government securities supported or backed by the federal government. The largest segment of the portfolio was federal agency discount notes at 74.42%. U.S. Treasury bills were the next largest allocation at 14.51%, followed by Treasury bonds and notes at 8.57%. The remainder of the portfolio consisted of discount notes and commercial paper.

We think these are interesting times for money market funds. Thank you for making the fund part of your investment portfolio. We look forward to serving you in the future as American Funds U.S. Government Money Market Fund.

Cordially,

 

Kristine M. Nishiyama

President

November 11, 2015

For current information about the fund, visit americanfunds.com.

2 American Funds Money Market Fund

Investment portfolio September 30, 2015

	Percent of net assets
Short-term securities:
Federal agency discount notes		74.42	%
U.S. Treasury bills		14.51
Discount notes		1.16
Commercial paper		1.05
Bonds, notes & other debt instruments:
U.S. Treasury bonds & notes		8.57
Other assets less liabilities		.29
		100.00	%

Short-term securities 91.14%	Yield at acquisition			Principal amount (000)		Value (000)
Federal agency discount notes 74.42%
Fannie Mae 10/1/2015		0.15	%	$	50,000	$	50,000
Fannie Mae 10/5/2015		0.14			69,100		69,100
Fannie Mae 10/21/2015		0.13			10,000		10,000
Fannie Mae 11/2/2015		0.12			110,000		110,000
Fannie Mae 11/3/2015		0.15			461,000		461,000
Fannie Mae 11/4/2015		0.15			32,400		32,400
Fannie Mae 11/12/2015		0.15			114,200		114,199
Fannie Mae 11/16/2015		0.11			168,575		168,573
Fannie Mae 11/17/2015		0.10			90,000		89,999
Fannie Mae 11/23/2015		0.12			50,000		49,999
Fannie Mae 12/1/2015		0.12			50,000		49,999
Fannie Mae 12/2/2015		0.16			143,072		143,069
Fannie Mae 12/9/2015		0.15			8,493		8,493
Fannie Mae 12/15/2015		0.14			50,000		49,997
Fannie Mae 12/22/2015		0.15			65,000		64,996
Fannie Mae 12/23/2015		0.12			7,500		7,500
Fannie Mae 1/4/2016		0.16			75,000		74,993
Fannie Mae 1/19/2016		0.15			98,000		97,986
Fannie Mae 2/8/2016		0.18			11,300		11,297
Federal Farm Credit Banks 10/1/2015		0.06			35,000		35,000
Federal Farm Credit Banks 10/2/2015		0.06			75,000		75,000
Federal Farm Credit Banks 10/7/2015		0.07			45,000		45,000
Federal Farm Credit Banks 10/9/2015		0.07			25,000		25,000
Federal Farm Credit Banks 10/13/2015		0.07			50,000		50,000
Federal Farm Credit Banks 10/14/2015		0.07			25,000		25,000
Federal Farm Credit Banks 10/16/2015		0.12			25,000		25,000
Federal Farm Credit Banks 10/22/2015		0.12			65,000		65,000
Federal Farm Credit Banks 11/3/2015		0.05			15,000		15,000
Federal Farm Credit Banks 11/5/2015		0.15			50,000		50,000
Federal Farm Credit Banks 11/6/2015		0.16			50,000		50,000
Federal Farm Credit Banks 11/9/2015		0.16			50,000		49,999
Federal Farm Credit Banks 11/10/2015		0.16			65,000		64,999
Federal Farm Credit Banks 11/13/2015		0.20			25,000		25,000
Federal Farm Credit Banks 11/16/2015		0.21			25,000		25,000
Federal Farm Credit Banks 11/19/2015		0.09			35,000		35,000
Federal Farm Credit Banks 11/30/2015		0.18			58,600		58,599
Federal Farm Credit Banks 12/1/2015		0.21			74,000		73,999
Federal Farm Credit Banks 12/29/2015		0.12			12,400		12,396
Federal Farm Credit Banks 2/10/2016		0.19			50,000		49,988
Federal Home Loan Bank 10/1/2015		0.07			65,301		65,301
Federal Home Loan Bank 10/2/2015		0.08			237,180		237,180
Federal Home Loan Bank 10/5/2015		0.09			11,100		11,100
Federal Home Loan Bank 10/6/2015		0.08			100,000		100,000
Federal Home Loan Bank 10/7/2015		0.08			215,000		215,000
Federal Home Loan Bank 10/9/2015		0.08			107,000		107,000
Federal Home Loan Bank 10/13/2015		0.08			75,000		75,000
Federal Home Loan Bank 10/14/2015		0.11			160,000		160,000
Federal Home Loan Bank 10/16/2015		0.12			260,300		260,300
Federal Home Loan Bank 10/19/2015		0.11			265,300		265,300

American Funds Money Market Fund 3

Short-term securities (continued)	Yield at acquisition			Principal amount (000)		Value (000)
Federal agency discount notes (continued)
Federal Home Loan Bank 10/20/2015		0.12	%	$	150,000	$	150,000
Federal Home Loan Bank 10/21/2015		0.10			174,549		174,549
Federal Home Loan Bank 10/22/2015		0.12			377,000		377,000
Federal Home Loan Bank 10/23/2015		0.11			273,000		273,000
Federal Home Loan Bank 10/26/2015		0.15			150,000		150,000
Federal Home Loan Bank 10/28/2015		0.14			453,100		453,100
Federal Home Loan Bank 10/30/2015		0.13			273,750		273,750
Federal Home Loan Bank 11/2/2015		0.11			250,000		250,000
Federal Home Loan Bank 11/4/2015		0.14			125,000		125,000
Federal Home Loan Bank 11/6/2015		0.16			360,400		360,400
Federal Home Loan Bank 11/9/2015		0.10			55,700		55,699
Federal Home Loan Bank 11/12/2015		0.21			300,000		299,997
Federal Home Loan Bank 11/13/2015		0.13			216,000		215,998
Federal Home Loan Bank 11/16/2015		0.10			141,400		141,399
Federal Home Loan Bank 11/17/2015		0.09			200,000		199,998
Federal Home Loan Bank 11/18/2015		0.13			308,700		308,697
Federal Home Loan Bank 11/20/2015		0.11			400,000		399,996
Federal Home Loan Bank 11/23/2015		0.11			24,900		24,900
Federal Home Loan Bank 11/24/2015		0.20			150,000		149,997
Federal Home Loan Bank 11/25/2015		0.20			100,000		99,998
Federal Home Loan Bank 12/1/2015		0.18			257,000		256,995
Federal Home Loan Bank 12/2/2015		0.19			325,000		324,993
Federal Home Loan Bank 12/3/2015		0.14			50,000		49,998
Federal Home Loan Bank 12/4/2015		0.14			75,400		75,398
Federal Home Loan Bank 12/7/2015		0.13			150,000		149,995
Federal Home Loan Bank 12/8/2015		0.13			100,000		99,997
Federal Home Loan Bank 12/9/2015		0.17			25,000		24,999
Federal Home Loan Bank 12/14/2015		0.10			50,000		49,998
Federal Home Loan Bank 12/22/2015		0.16			85,029		85,024
Federal Home Loan Bank 12/28/2015		0.14			100,800		100,793
Federal Home Loan Bank 12/30/2015		0.13			90,000		89,994
Federal Home Loan Bank 1/4/2016		0.16			97,000		96,991
Federal Home Loan Bank 1/7/2016		0.12			200,000		199,980
Federal Home Loan Bank 1/20/2016		0.18			50,000		49,993
Federal Home Loan Bank 1/27/2016		0.22			50,000		49,992
Federal Home Loan Bank 2/8/2016		0.20			82,900		82,881
Freddie Mac 10/1/2015		0.08			57,600		57,600
Freddie Mac 10/5/2015		0.05			75,000		75,000
Freddie Mac 10/7/2015		0.09			150,000		150,000
Freddie Mac 10/13/2015		0.06			33,000		33,000
Freddie Mac 10/15/2015		0.09			54,500		54,500
Freddie Mac 10/21/2015		0.09			40,000		40,000
Freddie Mac 10/23/2015		0.11			7,300		7,300
Freddie Mac 10/27/2015		0.11			145,500		145,500
Freddie Mac 10/28/2015		0.10			50,000		50,000
Freddie Mac 10/29/2015		0.13			18,000		18,000
Freddie Mac 10/30/2015		0.13			90,000		90,000
Freddie Mac 11/3/2015		0.04			80,900		80,900
Freddie Mac 11/5/2015		0.10			190,000		190,000
Freddie Mac 12/2/2015		0.10			75,000		74,998
Freddie Mac 12/3/2015		0.12			67,000		66,998
Freddie Mac 12/10/2015		0.12			50,000		49,998
Freddie Mac 12/16/2015		0.11			50,000		49,998
Freddie Mac 12/17/2015		0.13			125,000		124,994
Freddie Mac 12/18/2015		0.11			50,000		49,998
Freddie Mac 12/21/2015		0.12			46,400		46,397
Freddie Mac 1/8/2016		0.23			75,000		74,992
Freddie Mac 1/11/2016		0.15			45,000		44,995
Freddie Mac 1/13/2016		0.23			19,900		19,898
Freddie Mac 1/26/2016		0.24			159,500		159,473
Freddie Mac 1/28/2016		0.17			62,500		62,489
Freddie Mac 2/3/2016		0.17			156,400		156,369
Freddie Mac 2/17/2016		0.19			50,000		49,986
Freddie Mac 2/23/2016		0.20			100,000		99,968
Freddie Mac 2/24/2016		0.20			225,000		224,928

4 American Funds Money Market Fund

	Yield at acquisition			Principal amount (000)		Value (000)
Freddie Mac 2/25/2016		0.20	%	$	50,000	$	49,984
Freddie Mac 3/3/2016		0.20			50,000		49,981
Freddie Mac 3/18/2016		0.23			100,000		99,950
							12,834,454
U.S. Treasury bills 14.51%
U.S. Treasury Bills 10/1/2015		0.13			50,000		50,000
U.S. Treasury Bills 10/8/2015		0.09			50,000		50,000
U.S. Treasury Bills 10/15/2015		0.10			50,000		50,000
U.S. Treasury Bills 10/22/2015		0.09			275,000		275,000
U.S. Treasury Bills 10/29/2015		0.07			190,000		190,000
U.S. Treasury Bills 11/5/2015		0.07			150,000		150,000
U.S. Treasury Bills 11/12/2015		0.06			100,000		100,000
U.S. Treasury Bills 12/3/2015		0.10			587,100		587,100
U.S. Treasury Bills 12/10/2015		0.11			275,000		275,000
U.S. Treasury Bills 12/17/2015		0.07			290,000		290,000
U.S. Treasury Bills 12/24/2015		0.09			185,800		185,802
U.S. Treasury Bills 1/7/2016		0.08			100,000		99,998
U.S. Treasury Bills 1/14/2016		0.10			50,000		49,999
U.S. Treasury Bills 1/21/2016		0.13			50,000		49,998
U.S. Treasury Bills 3/17/2016		0.25			100,000		99,985
							2,502,882
Discount notes 1.16%
International Bank for Reconstruction and Development 10/9/2015		0.09			25,000		24,997
International Bank for Reconstruction and Development 10/26/2015		0.14			175,000		175,000
							199,997
Commercial paper 1.05%
British Columbia (Province of) 10/9/2015		0.13			27,700		27,700
British Columbia (Province of) 10/16/2015		0.12			50,000		49,999
General Electric Co. 10/1/2015		0.10			102,500		102,499
							180,198
Total short-term securities (cost: $15,714,836,000)							15,717,531
Bonds, notes & other debt instruments 8.57%
U.S. Treasury bonds & notes 8.57%
U.S. Treasury 8.57%
U.S. Treasury 0.25% 2015					200,000		200,078
U.S. Treasury 0.25% 2015					142,700		142,717
U.S. Treasury 0.25% 2015					90,000		90,018
U.S. Treasury 0.25% 2015					50,000		50,022
U.S. Treasury 0.375% 2015					50,000		50,019
U.S. Treasury 1.25% 2015					50,000		50,051
U.S. Treasury 1.375% 2015					50,000		50,112
U.S. Treasury 0.06% 20161					50,000		50,001
U.S. Treasury 0.068% 20161					95,000		94,971
U.S. Treasury 0.084% 20161					175,000		175,012
U.S. Treasury 0.085% 20161					100,000		100,008
U.S. Treasury 0.092% 20171					250,000		249,790
U.S. Treasury 0.099% 20171					175,000		174,968
Total bonds, notes & other debt instruments (cost: $1,477,807,000)							1,477,767
Total investment securities 99.71% (cost: $17,192,643,000)							17,195,298
Other assets less liabilities 0.29%							50,251
Net assets 100.00%						$	17,245,549

¹ Coupon rate may change periodically; “yield at acquisition” reflects current coupon rate.

See Notes to Financial Statements

American Funds Money Market Fund 5

Financial statements

Statement of assets and liabilities
at September 30, 2015	(dollars in thousands)
Assets:
Investment securities, at value (cost: $17,192,643)			$	17,195,298
Cash				10,142
Receivables for:
Sales of fund’s shares	$	90,902
Interest		1,233		92,135
				17,297,575
Liabilities:
Payables for:
Repurchases of fund’s shares		50,978
Services provided by related parties		497
Trustees’ deferred compensation		280
Other		271		52,026
Net assets at September 30, 2015			$	17,245,549
Net assets consist of:
Capital paid in on shares of beneficial interest			$	17,243,038
Accumulated net realized loss				(144	)
Net unrealized appreciation				2,655
Net assets at September 30, 2015			$	17,245,549

(dollars and shares in thousands, except per-share amounts)

Shares of beneficial interest issued and outstanding (no stated par value) —
unlimited shares authorized (17,242,779 total shares outstanding)

	Net assets		Shares outstanding		Net asset value per share
Class A	$	12,167,456		12,165,503	$	1.00
Class B		28,309		28,305		1.00
Class C		276,893		276,849		1.00
Class F-1		195,072		195,040		1.00
Class F-2		11,362		11,360		1.00
Class 529-A		916,113		915,966		1.00
Class 529-B		5,779		5,777		1.00
Class 529-C		197,855		197,822		1.00
Class 529-E		53,126		53,117		1.00
Class 529-F-1		63,137		63,127		1.00
Class R-1		45,493		45,486		1.00
Class R-2		1,008,917		1,008,755		1.00
Class R-2E		10		10		1.00
Class R-3		992,850		992,690		1.00
Class R-4		674,662		674,554		1.00
Class R-5		321,889		321,838		1.00
Class R-6		286,626		286,580		1.00

See Notes to Financial Statements

6 American Funds Money Market Fund

Statement of operations for the year ended September 30, 2015		(dollars in thousands)
Investment income:
Income:
Interest			$	13,579
Fees and expenses*:
Investment advisory services	$	45,526
Distribution services		632
Transfer agent services		17,692
Administrative services		3,606
Reports to shareholders		487
Registration statement and prospectus		926
Trustees’ compensation		133
Auditing and legal		76
Custodian		39
State and local taxes		1
Other		1,275
Total fees and expenses before reimbursements		70,393
Less reimbursements of fees and expenses		56,814
Total fees and expenses after reimbursements				13,579
Net investment income				—
Net realized gain and unrealized appreciation:
Net realized gain on investments				—
Net unrealized appreciation on investments				1,772
Net realized gain and unrealized appreciation				1,772
Net increase in net assets resulting from operations			$	1,772

* Additional information related to class-specific fees and expenses is included in the Notes to Financial Statements.

See Notes to Financial Statements

American Funds Money Market Fund 7

Statements of changes in net assets
	(dollars in thousands)
	Year ended September 30
		2015		2014
Operations:
Net investment income	$	—	$	—
Net realized loss		—		(106	)
Net unrealized appreciation		1,772		347
Net increase in net assets resulting from operations		1,772		241
Distributions paid to shareholders		—		—
Net capital share transactions		292,448		(2,031,740	)
Total increase (decrease) in net assets		294,220		(2,031,499	)
Net assets:
Beginning of year		16,951,329		18,982,828
End of year	$	17,245,549	$	16,951,329

See Notes to Financial Statements

8 American Funds Money Market Fund

Notes to financial statements

1. Organization

American Funds Money Market Fund (the “fund”) is registered under the Investment Company Act of 1940 as an open-end, diversified management investment company. The fund seeks to provide income on cash reserves while preserving capital and maintaining liquidity.

The fund has 17 share classes consisting of five retail share classes (Classes A, B and C, as well as two F share classes, F-1 and F-2), five 529 college savings plan share classes (Classes 529-A, 529-B, 529-C, 529-E and 529-F-1) and seven retirement plan share classes (Classes R-1, R-2, R-2E, R-3, R-4, R-5 and R-6). The 529 college savings plan share classes can be used to save for college education. The retirement plan share classes are generally offered only through eligible employer-sponsored retirement plans. The fund’s share classes are described further in the following table:

Share class	Initial sales charge	Contingent deferred sales charge upon redemption	Conversion feature
Classes A and 529-A	None	None	None
Classes B and 529-B*	None	Declines from 5% to 0% for redemptions within six years of purchase	Classes B and 529-B convert to Classes A and 529-A, respectively, after eight years
Class C*	None	1% for redemptions within one year of purchase	Class C converts to Class F-1 after 10 years
Class 529-C*	None	1% for redemptions within one year of purchase	None
Class 529-E	None	None	None
Classes F-1, F-2 and 529-F-1	None	None	None
Classes R-1, R-2, R-2E, R-3, R-4, R-5 and R-6	None	None	None

* ClassB, 529-B, C and 529-C shares of the fund are not available for purchase.

Holders of all share classes have equal pro rata rights to the assets, dividends and liquidation proceeds of the fund. Each share class has identical voting rights, except for the exclusive right to vote on matters affecting only its class. Share classes have different fees and expenses (“class-specific fees and expenses”), primarily due to different arrangements for distribution, transfer agent and administrative services. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different per-share dividends by each share class.

2. Significant accounting policies

The fund is an investment company that applies the accounting and reporting guidance issued in Topic 946 by the U.S. Financial Accounting Standards Board. The fund’s financial statements have been prepared to comply with U.S. generally accepted accounting principles (“U.S. GAAP”). These principles require the fund’s investment adviser to make estimates and assumptions that affect reported amounts and disclosures. Actual results could differ from those estimates. Subsequent events, if any, have been evaluated through the date of issuance in the preparation of the financial statements. The fund follows the significant accounting policies described in this section, as well as the valuation policies described in the next section on valuation.

Security transactions and related investment income — Security transactions are recorded by the fund as of the date the trades are executed with brokers. Realized gains and losses from security transactions are determined based on the specific identified cost of the securities. In the event a security is purchased with a delayed payment date, the fund will segregate liquid assets sufficient to meet its payment obligations. Interest income is recognized on an accrual basis. Market discounts, premiums and original issue discounts on fixed-income securities are amortized daily over the expected life of the security.

Class allocations — Income, fees and expenses (other than class-specific fees and expenses) are allocated daily among the various share classes based on the relative value of their settled shares. Realized and unrealized gains and losses are allocated daily among the various share classes based on their relative net assets. Class-specific fees and expenses, such as distribution, transfer agent and administrative services, are charged directly to the respective share class.

Dividends to shareholders — Dividends to shareholders are declared daily after the determination of the fund’s net investment income and are paid to shareholders monthly.

American Funds Money Market Fund 9

3. Valuation

Capital Research and Management Company (“CRMC”), the fund’s investment adviser, values the fund’s investments at fair value as defined by U.S. GAAP. The net asset value of each share class of the fund is generally determined as of approximately 4:00 p.m. New York time each day the New York Stock Exchange is open and when deemed prudent to do so by the fund’s officers on days when the New York Stock Exchange is closed. Shares of the fund are valued in accordance with U.S. Securities and Exchange Commission rules, using the penny-rounding method, which permits the fund to maintain each share class at a constant net asset value of $1.00 per share.

Methods and inputs — The fund’s investment adviser uses the following methods and inputs to establish the fair value of the fund’s assets and liabilities. Use of particular methods and inputs may vary over time based on availability and relevance as market and economic conditions evolve.

Fixed-income securities, including short-term securities, are generally valued at prices obtained from one or more pricing vendors. When the fund’s investment adviser deems it appropriate to do so (such as when vendor prices are unavailable or not deemed to be representative), fixed-income securities will be valued in good faith at the mean quoted bid and ask prices that are reasonably and timely available (or bid prices, if ask prices are not available) or at prices for securities of comparable maturity, quality and type.

Securities and other assets for which representative market quotations are not readily available or are considered unreliable by the fund’s investment adviser are fair valued as determined in good faith under fair valuation guidelines adopted by authority of the fund’s board of trustees as further described. The investment adviser follows fair valuation guidelines, consistent with SEC rules and guidance, to consider relevant principles and factors when making fair value determinations. The investment adviser considers relevant indications of value that are reasonably and timely available to it in determining the fair value to be assigned to a particular security, such as the type and cost of the security; contractual or legal restrictions on resale of the security; relevant financial or business developments of the issuer; actively traded similar or related securities; conversion or exchange rights on the security; related corporate actions; significant events occurring after the close of trading in the security; and changes in overall market conditions. In addition, the closing prices of equity securities that trade in markets outside U.S. time zones may be adjusted to reflect significant events that occur after the close of local trading but before the net asset value of each share class of the fund is determined. Fair valuations and valuations of investments that are not actively trading involve judgment and may differ materially from valuations that would have been used had greater market activity occurred.

Processes and structure — The fund’s board of trustees has delegated authority to the fund’s investment adviser to make fair value determinations, subject to board oversight. The investment adviser has established a Joint Fair Valuation Committee (the “Fair Valuation Committee”) to administer, implement and oversee the fair valuation process, and to make fair value decisions. The Fair Valuation Committee regularly reviews its own fair value decisions, as well as decisions made under its standing instructions to the investment adviser’s valuation teams. The Fair Valuation Committee reviews changes in fair value measurements from period to period and may, as deemed appropriate, update the fair valuation guidelines to better reflect the results of back testing and address new or evolving issues. The Fair Valuation Committee reports any changes to the fair valuation guidelines to the board of trustees with supplemental information to support the changes. The fund’s board and audit committee also regularly review reports that describe fair value determinations and methods.

The fund’s investment adviser has also established a Fixed-Income Pricing Review Group to administer and oversee the fixed-income valuation process, including the use of fixed-income pricing vendors. This group regularly reviews pricing vendor information and market data. Pricing decisions, processes and controls over security valuation are also subject to additional internal reviews, including an annual control self-evaluation program facilitated by the investment adviser’s compliance group.

Classifications — The fund’s investment adviser classifies the fund’s assets and liabilities into three levels based on the inputs used to value the assets or liabilities. Level 1 values are based on quoted prices in active markets for identical securities. Level 2 values are based on significant observable market inputs, such as quoted prices for similar securities and quoted prices in inactive markets. Certain securities trading outside the U.S. may transfer between Level 1 and Level 2 due to valuation adjustments resulting from significant market movements following the close of local trading. Level 3 values are based on significant unobservable inputs that reflect the investment adviser’s determination of assumptions that market participants might reasonably use in valuing the securities. The valuation levels are not necessarily an indication of the risk or liquidity associated with the underlying investment. For example, U.S. government securities are reflected as Level 2 because the inputs used to determine fair value may not always be quoted prices in an active market. At September 30, 2015, all of the fund’s investment securities were classified as Level 2.

10 American Funds Money Market Fund

4. Risk factors

Investing in the fund may involve certain risks including, but not limited to, those described below.

Market conditions — The prices of, and the income generated by, the securities held by the fund may decline — sometimes rapidly or unpredictably — due to various factors, including events or conditions affecting the general economy or particular industries; overall market changes; local, regional or global political, social or economic instability; governmental or governmental agency responses to economic conditions; and currency exchange rate, interest rate and commodity price fluctuations.

Issuer risks — The prices of, and the income generated by, securities held by the fund may decline in response to various factors directly related to the issuers of such securities, including reduced demand for an issuer’s goods or services, poor management performance and strategic initiatives such as mergers, acquisitions or dispositions, and the market response to any such initiatives.

Investing in money market funds — Investors may lose money by investing in the fund. Although the fund seeks to preserve the value of your investment at $1.00 per share, the fund cannot guarantee it will do so. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The fund’s sponsor has no legal obligation to provide, and should not be expected to provide, financial support to the fund at any time.

Interest rate risk — The values and liquidity of the securities held by the fund may be affected by changing interest rates. For example, the values of these securities may decline when interest rates rise and increase when interest rates fall. Longer maturity debt securities generally have greater sensitivity to changes in interest rates and may be subject to greater price fluctuations than shorter maturity debt securities. The fund may invest in variable and floating rate securities. Although such securities are generally less sensitive to interest rate changes, the value of variable and floating rate securities may decline if their interest rates do not rise as quickly, or as much, as general interest rates. Conversely, floating rate securities will not generally increase in value if interest rates decline. During periods of extremely low short-term interest rates, the fund may not be able to maintain a positive yield, and, given the historically low interest rate environment, risks associated with rising rates are currently heightened.

Credit and liquidity support — Changes in the credit quality of banks and financial institutions providing credit and liquidity support features with respect to securities held by the fund could cause the values of these securities to decline.

Investing outside the U.S. — Securities of issuers domiciled outside the U.S., or with significant operations outside the U.S., may lose value because of adverse political, social, economic or market developments (including social instability, regional conflicts, terrorism and war) in the countries or regions in which the issuers are domiciled or operate. Securities markets in certain countries may be more volatile and/or less liquid than those in the U.S. Investments outside the U.S. may also be subject to different accounting practices and different regulatory, legal and reporting standards, and may be more difficult to value, than those in the U.S.

Management — The investment adviser to the fund actively manages the fund’s investments. Consequently, the fund is subject to the risk that the methods and analyses employed by the investment adviser in this process may not produce the desired results.

5. Taxation and distributions

Federal income taxation — The fund complies with the requirements under Subchapter M of the Internal Revenue Code applicable to mutual funds and intends to distribute substantially all of its net taxable income each year. The fund is not subject to income taxes to the extent such distributions are made. Therefore, no federal income tax provision is required.

As of and during the period ended September 30, 2015, the fund did not have a liability for any unrecognized tax benefits. The fund recognizes interest and penalties, if any, related to unrecognized tax benefits as income tax expense in the statement of operations. During the period, the fund did not incur any interest or penalties.

The fund is not subject to examination by U.S. federal tax authorities for tax years before 2011 and by state tax authorities for tax years before 2010.

Distributions — Distributions paid to shareholders are based on net investment income determined on a tax basis, which may differ from net investment income for financial reporting purposes. These differences are due primarily to different treatment for items such as short-term capital gains and losses. The fiscal year in which amounts are distributed may differ from the year in which the net investment income is recorded by the fund for financial reporting purposes.

American Funds Money Market Fund 11

As of September 30, 2015, the tax basis components of distributable earnings, unrealized appreciation (depreciation) and cost of investment securities were as follows (dollars in thousands):

Capital loss carryforward*	$	(144	)
Gross unrealized appreciation on investment securities		2,795
Gross unrealized depreciation on investment securities		(140	)
Net unrealized appreciation on investment securities		2,655
Cost of investment securities		17,192,643

* The capital loss carryforward will be used to offset any capital gains realized by the fund in future years. The fund will not make distributions from capital gains while a capital loss carryforward remains.

6. Fees and transactions with related parties

CRMC, the fund’s investment adviser, is the parent company of American Funds Distributors^®, Inc. (“AFD”), the principal underwriter of the fund’s shares, and American Funds Service Company^® (“AFS”), the fund’s transfer agent. CRMC, AFD and AFS are considered related parties to the fund.

Investment advisory services — The fund has an investment advisory and service agreement with CRMC that provides for monthly fees accrued daily. These fees are based on a series of decreasing annual rates beginning with 0.295% on the first $1 billion of daily net assets and decreasing to 0.256% on such assets in excess of $34 billion. For the year ended September 30, 2015, the investment advisory services fee was $45,526,000, which was equivalent to an annualized rate of 0.270% of average daily net assets.

Class-specific fees and expenses — Expenses that are specific to individual share classes are accrued directly to the respective share class. The principal class-specific fees and expenses are further described below:

Distribution services — The fund has plans of distribution for all share classes, except Class F-2, R-5 and R-6 shares. Under the plans, the board of trustees approves certain categories of expenses that are used to finance activities primarily intended to sell fund shares and service existing accounts. The plans provide for payments, based on an annualized percentage of average daily net assets, ranging from 0.15% to 1.00% as noted in this section. In some cases, the board of trustees has limited the amounts that may be paid to less than the maximum allowed by the plans. All share classes with a plan may use a portion (0.15% for Class A, B, 529-A and 529-B shares and 0.25% for all other share classes) of average daily net assets to pay service fees, or to compensate AFD for paying service fees, to firms that have entered into agreements with AFD to provide certain shareholder services. The remaining amounts available to be paid under each plan are paid to dealers to compensate them for their sales activities.

Share class	Currently approved limits		Plan limits
Class A	0.15	%	0.15	%
Class 529-A	0.15		0.50
Classes B and 529-B	0.90		0.90
Classes C, 529-C and R-1	1.00		1.00
Class R-2	0.75		1.00
Class R-2E	0.60		0.85
Classes 529-E and R-3	0.50		0.75
Classes F-1, 529-F-1 and R-4	0.25		0.50

Transfer agent services — The fund has a shareholder services agreement with AFS under which the fund compensates AFS for providing transfer agent services to each of the fund’s share classes. These services include recordkeeping, shareholder communications and transaction processing. In addition, the fund reimburses AFS for amounts paid to third parties for performing transfer agent services on behalf of fund shareholders.

Administrative services — The fund has an administrative services agreement with CRMC under which the fund compensates CRMC for providing administrative services to Class A, C, F, 529 and R shares. These services include, but are not limited to, coordinating, monitoring, assisting and overseeing third parties that provide services to fund shareholders. Under the agreement, Class A shares pay an annual fee of 0.01% and Class C, F, 529 and R shares pay an annual fee of 0.05% of their respective average daily net assets.

12 American Funds Money Market Fund

529 plan services — Each 529 share class is subject to service fees to compensate the Virginia College Savings Plan (“Virginia529”) for its oversight and administration of the 529 college savings plan. The quarterly fee is based on a series of decreasing annual rates beginning with 0.10% on the first $30 billion of the net assets invested in Class 529 shares of the American Funds and decreasing to 0.05% on such assets in excess of $70 billion. The fee for any given calendar quarter is accrued and calculated on the basis of the average net assets of Class 529 shares of the American Funds for the last month of the prior calendar quarter. The fee is included in other expenses in the fund’s statement of operations. Virginia529 is not considered a related party to the fund.

For the year ended September 30, 2015, class-specific expenses under the agreements were as follows (dollars in thousands):

Share class	Distribution services	Transfer agent services		Administrative services		529 plan services
Class A	$—	$10,896		$1,199		Not applicable
Class B	289	33		Not applicable		Not applicable
Class C	—	196		116		Not applicable
Class F-1	284	139		57		Not applicable
Class F-2	Not applicable	10		5		Not applicable
Class 529-A	—	684		438		$776
Class 529-B	59	7		4		7
Class 529-C	—	149		92		164
Class 529-E	—	37		26		45
Class 529-F-1	—	46		29		52
Class R-1	—	53		23		Not applicable
Class R-2	—	2,989		503		Not applicable
Class R-2E	—	—	*	—	*	Not applicable
Class R-3	—	1,647		491		Not applicable
Class R-4	—	638		324		Not applicable
Class R-5	Not applicable	156		160		Not applicable
Class R-6	Not applicable	12		139		Not applicable
Total class-specific expenses	$632	$17,692		$3,606		$1,044

* Amount less than one thousand.

Reimbursements of fees and expenses — Due to lower short-term interest rates, CRMC reimbursed a portion of the fund’s fees and expenses. For the year ended September 30, 2015, the total fees reimbursed by CRMC were as follows (dollars in thousands):

Share class
Class A	$	36,178
Class B		399
Class C		777
Class F-1		708
Class F-2		32
Class 529-A		3,657
Class 529-B		93
Class 529-C		777
Class 529-E		212
Class 529-F-1		245
Class R-1		168
Class R-2		5,516
Class R-2E		—	*
Class R-3		4,114
Class R-4		2,268
Class R-5		960
Class R-6		710
Total reimbursements	$	56,814

* Amount less than one thousand.

Trustees’ deferred compensation — Trustees who are unaffiliated with CRMC may elect to defer the cash payment of part or all of their compensation. These deferred amounts, which remain as liabilities of the fund, are treated as if invested in shares of the fund or other American Funds. These amounts represent general, unsecured liabilities of the fund and vary according to the total returns of the selected funds. Trustees’ compensation of $133,000 in the fund’s statement of operations reflects $135,000 in current fees (either paid in cash or deferred) and a net decrease of $2,000 in the value of the deferred amounts.

American Funds Money Market Fund 13

Affiliated officers and trustees — Officers and certain trustees of the fund are or may be considered to be affiliated with CRMC, AFD and AFS. No affiliated officers or trustees received any compensation directly from the fund.

7. Capital share transactions

Capital share transactions in the fund were as follows (dollars and shares in thousands):

	Sales*				Repurchases*						Total increase (decrease)
Share class	Amount		Shares		Amount			Shares			Amount			Shares
Year ended September 30, 2015
Class A	$	17,273,728		17,273,728	$	(17,058,572	)		(17,058,572	)	$	215,156			215,156
Class B		16,298		16,298		(43,217	)		(43,217	)		(26,919	)		(26,919	)
Class C		274,702		274,702		(247,772	)		(247,772	)		26,930			26,930
Class F-1		258,444		258,444		(177,660	)		(177,660	)		80,784			80,784
Class F-2		33,865		33,865		(31,606	)		(31,606	)		2,259			2,259
Class 529-A		501,404		501,404		(437,621	)		(437,621	)		63,783			63,783
Class 529-B		3,415		3,415		(8,134	)		(8,134	)		(4,719	)		(4,719	)
Class 529-C		112,530		112,530		(95,457	)		(95,457	)		17,073			17,073
Class 529-E		29,345		29,345		(24,696	)		(24,696	)		4,649			4,649
Class 529-F-1		39,207		39,207		(31,983	)		(31,983	)		7,224			7,224
Class R-1		48,215		48,215		(52,522	)		(52,522	)		(4,307	)		(4,307	)
Class R-2		926,246		926,246		(981,342	)		(981,342	)		(55,096	)		(55,096	)
Class R-2E		—		—		—			—			—			—
Class R-3		1,052,605		1,052,605		(1,089,233	)		(1,089,233	)		(36,628	)		(36,628	)
Class R-4		655,143		655,143		(644,754	)		(644,754	)		10,389			10,389
Class R-5		372,834		372,834		(376,608	)		(376,608	)		(3,774	)		(3,774	)
Class R-6		544,642		544,642		(548,998	)		(548,998	)		(4,356	)		(4,356	)
Total net increase (decrease)	$	22,142,623		22,142,623	$	(21,850,175	)		(21,850,175	)	$	292,448			292,448
Year ended September 30, 2014
Class A	$	16,543,085		16,543,085	$	(18,223,954	)		(18,223,954	)	$	(1,680,869	)		(1,680,869	)
Class B		25,976		25,976		(74,524	)		(74,524	)		(48,548	)		(48,548	)
Class C		210,652		210,652		(304,576	)		(304,576	)		(93,924	)		(93,924	)
Class F-1		111,556		111,556		(66,960	)		(66,960	)		44,596			44,596
Class F-2		25,670		25,670		(26,650	)		(26,650	)		(980	)		(980	)
Class 529-A		463,742		463,742		(419,853	)		(419,853	)		43,889			43,889
Class 529-B		6,496		6,496		(11,064	)		(11,064	)		(4,568	)		(4,568	)
Class 529-C		96,996		96,996		(90,509	)		(90,509	)		6,487			6,487
Class 529-E		27,678		27,678		(25,287	)		(25,287	)		2,391			2,391
Class 529-F-1		33,828		33,828		(31,066	)		(31,066	)		2,762			2,762
Class R-1		50,595		50,595		(62,591	)		(62,591	)		(11,996	)		(11,996	)
Class R-2		802,118		802,118		(928,829	)		(928,829	)		(126,711	)		(126,711	)
Class R-2E†		10		10		—			—			10			10
Class R-3		882,345		882,345		(997,577	)		(997,577	)		(115,232	)		(115,232	)
Class R-4		585,174		585,174		(678,067	)		(678,067	)		(92,893	)		(92,893	)
Class R-5		316,200		316,200		(425,180	)		(425,180	)		(108,980	)		(108,980	)
Class R-6		738,694		738,694		(585,868	)		(585,868	)		152,826			152,826
Total net increase (decrease)	$	20,920,815		20,920,815	$	(22,952,555	)		(22,952,555	)	$	(2,031,740	)		(2,031,740	)

*	Includes exchanges between share classes of the fund.
†	Class R-2E shares were offered beginning August 29, 2014.

14 American Funds Money Market Fund

Financial highlights

	Net asset value, beginning of period		Net investment income1		Dividends (from net investment income)		Net asset value, end of period		Total return2,3			Net assets, end of period (in millions)		Ratio of expenses to average net assets before reimbursements			Ratio of expenses to average net assets after reimbursements3			Ratio of net income to average net assets3
Class A:
Year ended 9/30/2015	$	1.00	$	—	$	—	$	1.00		.00	%	$	12,167		.38	%		.08	%		—	%
Year ended 9/30/2014		1.00		—		—		1.00		.00			11,951		.38			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			13,632		.39			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			12,752		.38			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			15,503		.39			.13			—
Class B:
Year ended 9/30/2015		1.00		—		—		1.00		.00			28		1.12			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			55		1.10			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			104		1.13			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			154		1.12			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			274		1.13			.14			—
Class C:
Year ended 9/30/2015		1.00		—		—		1.00		.00			277		.42			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			250		.41			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			344		.43			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			338		.42			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			520		.43			.13			—
Class F-1:
Year ended 9/30/2015		1.00		—		—		1.00		.00			195		.70			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			114		.70			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			70		.69			.09			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			57		.67			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			75		.66			.12			—
Class F-2:
Year ended 9/30/2015		1.00		—		—		1.00		.00			11		.44			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			9		.42			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			10		.41			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			6		.34			.07			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			10		.37			.14			—
Class 529-A:
Year ended 9/30/2015		1.00		—		—		1.00		.00			916		.50			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			852		.50			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			808		.51			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			730		.51			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			711		.51			.13			—
Class 529-B:
Year ended 9/30/2015		1.00		—		—		1.00		.00			6		1.26			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			11		1.25			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			15		1.27			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			22		1.26			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			34		1.27			.14			—

See page 17 for footnotes.

American Funds Money Market Fund 15

Financial highlights (continued)

	Net asset value, beginning of period		Net investment income1		Dividends (from net investment income)		Net asset value, end of period		Total return2,3			Net assets, end of period (in millions)			Ratio of expenses to average net assets before reimbursements			Ratio of expenses to average net assets after reimbursements3			Ratio of net income to average net assets3
Class 529-C:
Year ended 9/30/2015	$	1.00	$	—	$	—	$	1.00		.00	%	$	198			.50	%		.08	%		—	%
Year ended 9/30/2014		1.00		—		—		1.00		.00			181			.50			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			174			.51			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			153			.51			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			152			.51			.13			—
Class 529-E:
Year ended 9/30/2015		1.00		—		—		1.00		.00			53			.49			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			48			.49			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			46			.50			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			43			.50			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			40			.51			.13			—
Class 529-F-1:
Year ended 9/30/2015		1.00		—		—		1.00		.00			63			.50			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			56			.50			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			53			.51			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			50			.51			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			43			.51			.13			—
Class R-1:
Year ended 9/30/2015		1.00		—		—		1.00		.00			46			.45			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			50			.44			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			62			.45			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			69			.45			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			75			.43			.14			—
Class R-2:
Year ended 9/30/2015		1.00		—		—		1.00		.00			1,009			.63			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			1,064			.65			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			1,191			.63			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			1,251			.66			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			1,368			.66			.14			—
Class R-2E:
Year ended 9/30/2015		1.00		—		—		1.00		.00			—	4		.57	5		.07	5		—	5
Period from 8/29/2014 to 9/30/20146,7		1.00		—		—		1.00		.00			—	4		.04	5,8		—	5,8,9		—	5,8
Class R-3:
Year ended 9/30/2015		1.00		—		—		1.00		.00			993			.50			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			1,029			.50			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			1,144			.51			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			1,134			.52			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			1,207			.50			.13			—

16 American Funds Money Market Fund

	Net asset value, beginning of period		Net investment income1		Dividends (from net investment income)		Net asset value, end of period		Total return2,3			Net assets, end of period (in millions)		Ratio of expenses to average net assets before reimbursements			Ratio of expenses to average net assets after reimbursements3			Ratio of net income to average net assets3
Class R-4:
Year ended 9/30/2015	$	1.00	$	—	$	—	$	1.00		.00	%	$	675		.43	%		.08	%		—	%
Year ended 9/30/2014		1.00		—		—		1.00		.00			664		.44			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			757		.44			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			710		.43			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			729		.43			.13			—
Class R-5:
Year ended 9/30/2015		1.00		—		—		1.00		.00			322		.38			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			326		.38			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			435		.38			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			367		.38			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			356		.38			.13			—
Class R-6:
Year ended 9/30/2015		1.00		—		—		1.00		.00			287		.34			.08			—
Year ended 9/30/2014		1.00		—		—		1.00		.00			291		.33			.07			—
Year ended 9/30/2013		1.00		—		—		1.00		.00			138		.34			.10			—
Year ended 9/30/2012		1.00		—		—		1.00		.00			105		.34			.08			—
Year ended 9/30/2011		1.00		—		—		1.00		.00			84		.34			.13			—

1	Based on average shares outstanding.
2	Total returns exclude any applicable sales charges, including contingent deferred sales charges.
3	This column reflects the impact of certain reimbursements from CRMC. During the periods shown, CRMC reimbursed a portion of the fees and expenses for each share class due to lower short-term interest rates.
4	Amount less than $1 million.
5	This class consisted solely of seed capital invested by CRMC; therefore, certain fees were not accrued.
6	Based on operations for the period shown and, accordingly, is not representative of a full year.
7	Class R-2E shares were offered beginning August 29, 2014.
8	Not annualized.
9	Amount less than .01%.

See Notes to Financial Statements

American Funds Money Market Fund 17

Report of Independent Registered Public Accounting Firm

To the Board of Trustees and Shareholders of American Funds Money Market Fund

In our opinion, the accompanying statement of assets and liabilities, including the investment 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 American Funds Money Market Fund (the “Fund”) at September 30, 2015, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended and the financial highlights for each of the periods presented, 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 securities at September 30, 2015 by correspondence with the custodian and brokers, provide a reasonable basis for our opinion.

PricewaterhouseCoopers, LLP

Los Angeles, California

November 11, 2015

18 American Funds Money Market Fund

Expense example unaudited

As a fund shareholder, you incur two types of costs: (1) transaction costs, such as initial sales charges on purchase payments and contingent deferred sales charges on redemptions (loads), and (2) ongoing costs, including management fees, distribution and service (12b-1) fees, and other expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in the fund so you can compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 invested at the beginning of the period and held for the entire six-month period (April 1, 2015, through September 30, 2015).

Actual expenses:

The first line of each share class in the table on the following page provides information about actual account values and actual expenses. You may use the information in this line, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number in the first line under the heading entitled “Expenses paid during period” to estimate the expenses you paid on your account during this period.

Hypothetical example for comparison purposes:

The second line of each share class in the table on the following page provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio for the share class and an assumed rate of return of 5.00% per year before expenses, which is not the actual return of the share class. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the fund and other funds. To do so, compare this 5.00% hypothetical example with the 5.00% hypothetical examples that appear in the shareholder reports of the other funds.

Notes:

Retirement plan participants may be subject to certain fees charged by the plan sponsor, and Class F-1, F-2 and 529-F-1 shareholders may be subject to fees charged by financial intermediaries, typically ranging from 0.75% to 1.50% of assets annually depending on services offered. You can estimate the impact of these fees by adding the amount of the fees to the total estimated expenses you paid on your account during the period as calculated above. In addition, your ending account value would be lower by the amount of these fees.

Note that the expenses shown in the table on the following page are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads). Therefore, the second line of each share class in the table is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher.

American Funds Money Market Fund 19

	Beginning account value 4/1/2015		Ending account value 9/30/2015		Expenses paid during period*		Annualized expense ratio
Class A - actual return	$	1,000.00	$	1,000.00	$	.45		.09	%
Class A - assumed 5% return		1,000.00		1,024.62		.46		.09
Class B - actual return		1,000.00		1,000.00		.45		.09
Class B - assumed 5% return		1,000.00		1,024.62		.46		.09
Class C - actual return		1,000.00		1,000.00		.45		.09
Class C - assumed 5% return		1,000.00		1,024.62		.46		.09
Class F-1 - actual return		1,000.00		1,000.00		.45		.09
Class F-1 - assumed 5% return		1,000.00		1,024.62		.46		.09
Class F-2 - actual return		1,000.00		1,000.00		.45		.09
Class F-2 - assumed 5% return		1,000.00		1,024.62		.46		.09
Class 529-A - actual return		1,000.00		1,000.00		.45		.09
Class 529-A - assumed 5% return		1,000.00		1,024.62		.46		.09
Class 529-B - actual return		1,000.00		1,000.00		.45		.09
Class 529-B - assumed 5% return		1,000.00		1,024.62		.46		.09
Class 529-C - actual return		1,000.00		1,000.00		.45		.09
Class 529-C - assumed 5% return		1,000.00		1,024.62		.46		.09
Class 529-E - actual return		1,000.00		1,000.00		.45		.09
Class 529-E - assumed 5% return		1,000.00		1,024.62		.46		.09
Class 529-F-1 - actual return		1,000.00		1,000.00		.45		.09
Class 529-F-1 - assumed 5% return		1,000.00		1,024.62		.46		.09
Class R-1 - actual return		1,000.00		1,000.00		.45		.09
Class R-1 - assumed 5% return		1,000.00		1,024.62		.46		.09
Class R-2 - actual return		1,000.00		1,000.00		.45		.09
Class R-2 - assumed 5% return		1,000.00		1,024.62		.46		.09
Class R-2E - actual return		1,000.00		1,000.00		.40		.08
Class R-2E - assumed 5% return		1,000.00		1,024.67		.41		.08
Class R-3 - actual return		1,000.00		1,000.00		.45		.09
Class R-3 - assumed 5% return		1,000.00		1,024.62		.46		.09
Class R-4 - actual return		1,000.00		1,000.00		.45		.09
Class R-4 - assumed 5% return		1,000.00		1,024.62		.46		.09
Class R-5 - actual return		1,000.00		1,000.00		.45		.09
Class R-5 - assumed 5% return		1,000.00		1,024.62		.46		.09
Class R-6 - actual return		1,000.00		1,000.00		.45		.09
Class R-6 - assumed 5% return		1,000.00		1,024.62		.46		.09

* The “expenses paid during period” are equal to the “annualized expense ratio,” multiplied by the average account value over the period, multiplied by the number of days in the period, and divided by 365 (to reflect the one-half year period).

20 American Funds Money Market Fund

Board of trustees and other officers

Independent trustees¹

Name and year of birth	Year first elected a trustee of the fund2	Principal occupation(s) during past five years	Number of portfolios in fund complex overseen by trustee	Other directorships3 held by trustee
William H. Baribault, 1945	2010	CEO and President, Richard Nixon Foundation; Chairman of the Board and CEO, Oakwood Enterprises (private investment and consulting)	79	None
James G. Ellis, 1947	2009	Dean and Professor of Marketing, Marshall School of Business, University of Southern California	79	Mercury General Corporation
Leonard R. Fuller, 1946	2009	Private investor; former President and CEO, Fuller Consulting (financial management consulting firm)	79	None
Mary Davis Holt, 1950	2015	Partner, Flynn Heath Holt Leadership, LLC (leadership consulting); former COO, Time Life Inc. (1993–2003)	76	None
R. Clark Hooper, 1946 Chairman of the Board (Independent and Non-Executive)	2009	Private investor	81	The Swiss Helvetia Fund, Inc.
Merit E. Janow, 1958	2010	Dean and Professor, Columbia University, School of International and Public Affairs	78	MasterCard Incorporated; The NASDAQ Stock Market LLC; Trimble Navigation Limited
Laurel B. Mitchell, PhD, 1955	2009	Distinguished Professor of Accounting, University of Redlands; former Director, Accounting Program, University of Redlands	75	None
Frank M. Sanchez, 1943	2009	Principal, The Sanchez Family Corporation dba McDonald’s Restaurants (McDonald’s licensee)	75	None
Margaret Spellings, 1957	2009	President, George W. Bush Foundation; former President and CEO, Margaret Spellings & Company (public policy and strategic consulting); former President, U.S. Chamber Foundation and Senior Advisor to the President and CEO, U.S. Chamber of Commerce	79	ClubCorp Holdings, Inc.
Steadman Upham, PhD, 1949	2009	President and University Professor, The University of Tulsa	78	None
Interested trustee4,5
Name, year of birth and position with fund	Year first elected a trustee or officer of the fund2	Principal occupation(s) during past five years and positions held with affiliated entities or the principal underwriter of the fund	Number of portfolios in fund complex overseen by trustee	Other directorships3 held by trustee
Kristine M. Nishiyama, 1970 Vice Chairman of the Board and President	2009	Senior Vice President and Senior Counsel — Fund Business Management Group, Capital Research and Management Company; Senior Vice President and General Counsel, Capital Bank and Trust Company6	1	None

The fund’s statement of additional information includes further details about fund trustees and is available without charge upon request by calling American Funds Service Company at (800) 421-4225 or by visiting the American Funds website at americanfunds.com. The address for all trustees and officers of the fund is 333 South Hope Street, Los Angeles, CA 90071, Attention: Secretary.

See page 22 for footnotes.

American Funds Money Market Fund 21

Other officers⁵

Name, year of birth and position with fund	Year first elected an officer of the fund2	Principal occupation(s) during past five years and positions held with affiliated entities or the principal underwriter of the fund
Louise M. Moriarty, 1959 Senior Vice President	2009	Senior Vice President — Fixed Income Securities Trading Unit, Capital Research and Management Company
Karen F. Hall, 1965 Vice President	2009	Vice President — Fixed Income Securities Trading Unit, Capital Research and Management Company
Belinda A. Heard, 1962 Vice President	2009	Vice President — Fixed Income Securities Trading Unit, Capital Research and Management Company
Steven I. Koszalka, 1964 Secretary	2010	Vice President — Fund Business Management Group, Capital Research and Management Company
Brian C. Janssen, 1972 Treasurer	2011	Vice President — Investment Operations, Capital Research and Management Company
Jane Y. Chung, 1974 Assistant Secretary	2014	Associate — Fund Business Management Group, Capital Research and Management Company
Dori Laskin, 1951 Assistant Treasurer	2010	Vice President — Investment Operations, Capital Research and Management Company
Gregory F. Niland, 1971 Assistant Treasurer	2015	Vice President — Investment Operations, Capital Research and Management Company

1	The term independent trustee refers to a trustee who is not an “interested person” of the fund within the meaning of the Investment Company Act of 1940.
2	Trustees and officers of the fund serve until their resignation, removal or retirement.
3	This includes all directorships/trusteeships (other than those in the American Funds or other funds managed by Capital Research and Management Company or its affiliates) that are held by each trustee as a trustee or director of a public company or a registered investment company.
4	The term interested trustee refers to a trustee who is an “interested person” within the meaning of the Investment Company Act of 1940, on the basis of their affiliation with the fund’s investment adviser, Capital Research and Management Company, or affiliated entities (including the fund’s principal underwriter).
5	All of the directors/trustees and/or officers listed are officers and/or directors/trustees of one or more of the other funds for which Capital Research and Management Company serves as investment adviser.
6	Company affiliated with Capital Research and Management Company.

22 American Funds Money Market Fund

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American Funds Money Market Fund 23

Offices of the fund and of the investment adviser

Capital Research and Management Company

333 South Hope Street

Los Angeles, CA 90071-1406

6455 Irvine Center Drive

Irvine, CA 92618-4518

Transfer agent for shareholder accounts

American Funds Service Company

(Write to the address near you.)

P.O. Box 6007

Indianapolis, IN 46206-6007

P.O. Box 2280

Norfolk, VA 23501-2280

Custodian of assets

JPMorgan Chase Bank

270 Park Avenue

New York, NY 10017-2070

Counsel

Morgan, Lewis & Bockius LLP

355 South Grand Avenue, Suite 4400

Los Angeles, CA 90071-3106

Independent registered public accounting firm

PricewaterhouseCoopers LLP

601 South Figueroa Street

Los Angeles, CA 90017-3874

Principal underwriter

American Funds Distributors, Inc.

333 South Hope Street

Los Angeles, CA 90071-1406

24 American Funds Money Market Fund

Investors should carefully consider investment objectives, risks, charges and expenses. This and other important information is contained in the fund prospectus and summary prospectus, which can be obtained from your financial professional and should be read carefully before investing. You may also call American Funds Service Company (AFS) at (800) 421-4225 or visit the American Funds website at americanfunds.com.

“American Funds Proxy Voting Procedures and Principles” — which describes how we vote proxies relating to portfolio securities — is available on the American Funds website or upon request by calling AFS. The fund files its proxy voting record with the U.S. Securities and Exchange Commission (SEC) for the 12 months ended June 30 by August 31. The proxy voting record is available free of charge on the SEC website at sec.gov and on the American Funds website.

American Funds Money Market Fund files a complete list of its portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-Q. This filing is available free of charge on the SEC website. You may also review or, for a fee, copy this filing at the SEC’s Public Reference Room in Washington, D.C. Additional information regarding the operation of the Public Reference Room may be obtained by calling the SEC’s Office of Investor Education and Advocacy at (800) SEC-0330. Additionally, the list of portfolio holdings is available by calling AFS.

This report is for the information of shareholders of American Funds Money Market Fund, but it also may be used as sales literature when preceded or accompanied by the current prospectus or summary prospectus, which gives details about charges, expenses, investment objectives and operating policies of the fund. If used as sales material after December 31, 2015, this report must be accompanied by an American Funds statistical update for the most recently completed calendar quarter.

The American Funds Advantage

Since 1931, American Funds, part of Capital Group, has helped investors pursue long-term investment success. Our consistent approach — in combination with The Capital System^SM — has resulted in a superior long-term track record.

Aligned with investor success

We base our decisions on a long-term perspective, which we believe aligns our goals with the interests of our clients. Our portfolio managers average 27 years of investment experience, including 22 years at our company, reflecting a career commitment to our long-term approach.¹

The Capital System^SM

Our investment process, The Capital System, combines individual accountability with teamwork. Each fund is divided into portions that are managed independently by investment professionals with diverse backgrounds, ages and investment approaches. An extensive global research effort is the backbone of our system.

Superior long-term track record

Our equity funds have beaten their Lipper peer indexes in 91% of 10-year periods and 96% of 20-year periods. Our fixed-income funds have beaten their Lipper indexes in 54% of 10-year periods and 57% of 20-year periods.² Our fund management fees have been among the lowest in the industry.³

1	Portfolio manager experience as of December 31, 2014.
2	Based on Class A share results for rolling periods through December 31, 2014. Periods covered are the shorter of the fund’s lifetime or since the comparable Lipper index inception date (except SMALLCAP World Fund, for which the Lipper average was used).
3	On average, our management fees were in the lowest quintile 70% of the time, based on the 20-year period ended December 31, 2014, versus comparable Lipper categories, excluding funds of funds.

ITEM 2 – Code of Ethics

The Registrant has adopted a Code of Ethics that applies to its Principal Executive Officer and Principal Financial Officer. The Registrant undertakes to provide to any person without charge, upon request, a copy of the Code of Ethics. Such request can be made to American Funds Service Company at 800/421-9225 or to the Secretary of the Registrant, 333 South Hope Street, Los Angeles, California 90071.

ITEM 3 – Audit Committee Financial Expert

The Registrant’s board has determined that Laurel B. Mitchell, a member of the Registrant’s audit committee, is an “audit committee financial expert” and "independent," as such terms are defined in this Item. This designation will not increase the designee’s duties, obligations or liability as compared to his or her duties, obligations and liability as a member of the audit committee and of the board, nor will it reduce the responsibility of the other audit committee members. There may be other individuals who, through education or experience, would qualify as "audit committee financial experts" if the board had designated them as such. Most importantly, the board believes each member of the audit committee contributes significantly to the effective oversight of the Registrant’s financial statements and condition.

ITEM 4 – Principal Accountant Fees and Services

Registrant:
	a)  Audit Fees:
		2014	$ 37,000
		2015	$ 54,000
	b)  Audit-Related Fees:
		2014	None
		2015	None
	c)  Tax Fees:
		2014	$ 7,000
		2015	$ 7,000
		The tax fees consist of professional services relating to the preparation of the Registrant’s tax returns.
	d)  All Other Fees:
		2014	None
		2015	None

Adviser and affiliates (includes only fees for non-audit services billed to the adviser and affiliates for engagements that relate directly to the operations and financial reporting of the Registrant and were subject to the pre-approval policies described below):
	a)  Audit Fees:
		Not Applicable
	b)  Audit-Related Fees:
		2014	None
		2015	None
	c)  Tax Fees:
		2014	$ 44,000
		2015	$ 29,000
		The tax fees consist of consulting services relating to the Registrant’s investments.
	d)  All Other Fees:
		2014	$ 2,000
		2015	$ 2,000
		The other fees consist of subscription services related to an accounting research tool.

All audit and permissible non-audit services that the Registrant’s audit committee considers compatible with maintaining the independent registered public accounting firm’s independence are required to be pre-approved by the committee. The pre-approval requirement will extend to all non-audit services provided to the Registrant, the investment adviser, and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the Registrant, if the engagement relates directly to the operations and financial reporting of the Registrant. The committee will not delegate its responsibility to pre-approve these services to the investment adviser. The committee may delegate to one or more committee members the authority to review and pre-approve audit and permissible non-audit services. Actions taken under any such delegation will be reported to the full committee at its next meeting. The pre-approval requirement is waived with respect to non-audit services if certain conditions are met. The pre-approval requirement was not waived for any of the non-audit services listed above provided to the Registrant, adviser and affiliates.

Aggregate non-audit fees paid to the Registrant’s auditors, including fees for all services billed to the Registrant, adviser and affiliates that provide ongoing services to the Registrant, were $53,000 for fiscal year 2014 and $57,000 for fiscal year 2015. The non-audit services represented by these amounts were brought to the attention of the committee and considered to be compatible with maintaining the auditors’ independence.

ITEM 5 – Audit Committee of Listed Registrants

Not applicable to this Registrant, insofar as the Registrant is not a listed issuer as defined in Rule 10A-3 under the Securities Exchange Act of 1934.

ITEM 6 – Schedule of Investments

Not applicable, insofar as the schedule is included as part of the report to shareholders filed under Item 1 of this form.

ITEM 7 – Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies

Not applicable to this Registrant, insofar as the Registrant is not a closed-end management investment company.

ITEM 8 – Portfolio Managers of Closed-End Management Investment Companies

Not applicable to this Registrant, insofar as the Registrant is not a closed-end management investment company.

ITEM 9 – Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers

Not applicable to this Registrant, insofar as the Registrant is not a closed-end management investment company.

ITEM 10 – Submission of Matters to a Vote of Security Holders

There have been no material changes to the procedures by which shareholders may recommend nominees to the Registrant’s board of trustees since the Registrant last submitted a proxy statement to its shareholders. The procedures are as follows. The Registrant has a nominating and governance committee comprised solely of persons who are not considered ‘‘interested persons’’ of the Registrant within the meaning of the Investment Company Act of 1940, as amended. The committee periodically reviews such issues as the board’s composition, responsibilities, committees, compensation and other relevant issues, and recommends any appropriate changes to the full board of trustees. While the committee normally is able to identify from its own resources an ample number of qualified candidates, it will consider shareholder suggestions of persons to be considered as nominees to fill future vacancies on the board. Such suggestions must be sent in writing to the nominating and governance committee of the Registrant, c/o the Registrant’s Secretary, and must be accompanied by complete biographical and occupational data on the prospective nominee, along with a written consent of the prospective nominee for consideration of his or her name by the nominating and governance committee.

ITEM 11 – Controls and Procedures

(a)	The Registrant’s Principal Executive Officer and Principal Financial Officer have concluded, based on their evaluation of the Registrant’s disclosure controls and procedures (as such term is defined in Rule 30a-3 under the Investment Company Act of 1940), that such controls and procedures are adequate and reasonably designed to achieve the purposes described in paragraph (c) of such rule.
(b)	There were no changes in the Registrant’s internal controls over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) that occurred during the Registrant’s second fiscal quarter of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting.

ITEM 12 – Exhibits

(a)(1)	The Code of Ethics that is the subject of the disclosure required by Item 2 is attached as an exhibit hereto.
(a)(2)	The certifications required by Rule 30a-2 of the Investment Company Act of 1940 and Sections 302 and 906 of the Sarbanes-Oxley Act of 2002 are attached as exhibits hereto.

SIGNATURES

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.

AMERICAN FUNDS MONEY MARKET FUND

By /s/ Kristine M. Nishiyama

Kristine M. Nishiyama, Vice Chairman, President

and Principal Executive Officer

Date: November 30, 2015

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

By /s/ Kristine M. Nishiyama

Kristine M. Nishiyama, Vice Chairman, President

and Principal Executive Officer

Date: November 30, 2015

By /s/ Brian C. Janssen

Brian C. Janssen, Treasurer and

Principal Financial Officer

Date: November 30, 2015