American Funds Mortgage 529-F-1 (CMFFX)

Fund Assets	13.05B
Expense Ratio	0.68%
Min. Investment	$250
Turnover	58.00%
Dividend (ttm)	0.32
Dividend Yield	3.66%
Dividend Growth	-4.36%
Payout Frequency	n/a
Ex-Dividend Date	May 29, 2026

Previous Close	8.81
YTD Return	0.19%
1-Year Return	3.44%
5-Year Return	1.31%
52-Week Low	8.67
52-Week High	9.03
Beta (5Y)	-0.04
Holdings	1188
Inception Date	Nov 1, 2010

About CMFFX

American Funds Mortgage Fund 529-F-1 is a mutual fund focused on generating current income and preserving capital by primarily investing in fixed-income securities, especially mortgage-related obligations. The fund allocates a significant majority of its portfolio—over 80%—to mortgage-backed securities, most of which are sponsored or guaranteed by the U.S. government or government agencies, with the remainder invested in U.S. Treasury bonds, asset-backed obligations, and cash equivalents. This structure makes the fund particularly relevant to investors seeking stable income, low credit risk, and moderate sensitivity to interest rate movements. American Funds Mortgage Fund 529-F-1 plays a notable role in the fixed-income market by providing a vehicle for exposure to residential and commercial real estate financing, supporting liquidity and efficiency in the secondary mortgage market. Monthly dividend payments and a competitive yield contribute to its appeal as an income-focused investment, while its characteristics align it with intermediate-term U.S. government bond benchmarks. The fund is also positioned within the college savings landscape as an option for 529 plans, allowing investors to potentially benefit from tax-advantaged growth while targeting capital preservation and regular income distributions.

• Fund Family: Capital Group
• Category: Intmdt US Govt
• Performance Rating: Average
• Risk Rating: Average
• Stock Exchange: NASDAQ
• Ticker Symbol: CMFFX
• Share Class: Class 529-f-1
• Index: Bloomberg US MBS TR

Performance

CMFFX had a total return of 3.44% in the past year, including dividends. Since the fund's inception, the average annual return has been 1.77%.

Other Share Classes

These are alternative share classes of the same fund, from the same provider.

Symbol	Share Class	Expense Ratio
RMAGX	Class R-6	0.26%
AFFMX	Class F-3	0.26%
FMMFX	Class 529-f-3	0.31%
RMAFX	Class R-5	0.32%

Top 10 Holdings

34.63% of assets

Name	Symbol	Weight
Capital Group Central Cash Fund	n/a	9.63%
Federal National Mortgage Association 6%	FNCL.6 8.11	5.98%
Federal Home Loan Banks 0%	FHLBDN.0 09.09.14	3.25%
Federal National Mortgage Association 6.5%	FNCL.6.5 7.11	2.92%
Federal National Mortgage Association 2.5%	FNCL.2.5 8.11	2.79%
Federal Home Loan Banks 0%	FHLBDN.0 09.16.14	2.66%
Federal Home Loan Banks 0%	FHLBDN.0 08.06.18	1.91%
Federal Home Loan Banks 0%	FHLBDN.0 09.25.18	1.90%
Federal Home Loan Banks 0%	FHLBDN.0 12.31.18	1.88%
Federal Home Loan Banks 0%	FHLBDN.0 07.29.14	1.72%

Dividend History

Ex-Dividend	Amount	Pay Date
May 29, 2026	$0.03083	Jun 1, 2026
Apr 30, 2026	$0.03152	May 1, 2026
Mar 31, 2026	$0.03223	Apr 1, 2026
Feb 27, 2026	$0.03094	Mar 2, 2026
Jan 30, 2026	$0.03148	Feb 2, 2026
Dec 31, 2025	$0.03323	Jan 2, 2026

Data Sources: Tiingo, Twelve Data, and more

Historical data is provided by Tiingo. Delayed stock pricing data is provided by Twelve Data. Several fund data points are also provided by Finnhub.

Last checked:

Aug 26, 2026

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