AMUSX Mutual Fund

NAV$11.48

AUM$2.4B

TER0.65%

Holdings1,526

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AMUSX Mutual Fund

NAV$11.48

American US Government Securities Fund Class A

AUM$2.4B

TER0.65%

Holdings1,526

See how much of AMUSX you already own

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Overview Performance Chart Dividends Top Holdings All Holdings Sectors Geography Similar Compare Overlap

Showing top 50 of 1,305 holdings · as of Sep 30, 2026

AMUSX holdings, by weight
#	Ticker	Name	Weight	Cumulative	Shares	Mkt value
1	Debt	Us Treas Nts	7.53%	7.5%	1,793,000,000	$1.74B
2	Debt	U.S. Treasury Bill, 0%, due 10/29/2026	2.80%	10.3%	650,000,000	$648.05M
3	—	NA	2.72%	13.1%	6,280,365	$627.91M
4	Debt	U.S. Treasury	2.60%	15.7%	605,000,000	$600.91M
5	Debt	U.S. Treasury	2.09%	17.7%	489,004,800	$483.15M
6	Debt	U.S. Treasury Inflation-Protected Security	2.03%	19.8%	500,361,042	$469.77M
7	Debt	U.S. Treasury	1.80%	21.6%	418,582,000	$416.47M
8	Debt	Treasury Bill	1.72%	23.3%	400,000,000	$397.21M
9	Debt	Treasury Bill 0 20261105	1.62%	24.9%	375,000,000	$373.58M
10	Debt	U.S. Treasury	1.60%	26.5%	376,413,600	$370.71M
11	Debt	U.S. Treasury Note, 4.25%, due 07/31/2028	1.46%	28.0%	340,000,000	$336.44M
12	Debt	Government National Mortgage Assn	1.32%	29.3%	342,703,344	$305.49M
13	Debt	U.S. Treasury	1.30%	30.6%	350,878,200	$300.10M
14	Debt	U.S. Treasury	1.25%	31.8%	294,851,700	$289.37M
15	Debt	U.S. Treasury Inflation-Protected Security	1.21%	33.1%	281,807,500	$280.16M
16	Debt	United States Treasury Bond, 3.88, April 30, 2031	1.19%	34.2%	288,162,000	$274.28M
17	Debt	U.S. Treasury	1.14%	35.4%	275,000,000	$264.33M
18	Debt	Uniform Mortgage-Backed Security	1.13%	36.5%	259,649,231	$260.17M
19	Debt	U.S. Treasury	1.08%	37.6%	251,818,800	$249.27M
20	Debt	United States Treasury Bills	1.07%	38.7%	250,000,000	$246.21M
21	Debt	Treasury Bill	1.07%	39.7%	250,000,000	$247.75M
22	Debt	Treasury Bill	1.07%	40.8%	250,000,000	$248.31M
23	Debt	U.S. Treasury Inflation-Protected Security	0.99%	41.8%	235,696,962	$229.53M
24	Debt	U.S. Treasury	0.96%	42.8%	224,000,000	$221.23M
25	Debt	U.S. Treasury	0.95%	43.7%	220,840,000	$218.49M
26	Debt	Uniform Mortgage-Backed Security	0.91%	44.6%	227,443,524	$210.15M
27	Debt	U.S. Treasury	0.89%	45.5%	208,643,000	$206.28M
28	Debt	U.S. Treasury	0.88%	46.4%	215,000,000	$203.14M
29	Debt	Treasury Bill	0.86%	47.2%	200,000,000	$198.81M
30	Debt	Us Treasury N/B 08/28 4.125	0.85%	48.1%	200,000,000	$197.34M
31	Debt	U.S. Treasury	0.82%	48.9%	407,512,600	$190.51M
32	Debt	U.S. Treasury	0.81%	49.7%	205,580,000	$187.12M
33	Debt	U.S. Treasury	0.79%	50.5%	188,000,000	$183.22M
34	Debt	Uniform Mortgage-Backed Security	0.78%	51.3%	193,978,250	$179.45M
35	Debt	U.S. Treasury Inflation-Protected Security	0.77%	52.1%	194,594,674	$178.35M
36	Debt	Freddie Mac Pool #Sd8350	0.75%	52.8%	176,390,153	$173.72M
37	Debt	Freddie Mac Pool #Sd8288	0.70%	53.5%	173,013,945	$162.11M
38	Debt	U.S. Treasury	0.69%	54.2%	170,977,800	$159.97M
39	Debt	Freddie Mac Pool #Sd8332	0.67%	54.9%	156,216,346	$153.95M
40	Debt	Government National Mortgage Assn	0.65%	55.5%	153,439,896	$150.79M
41	Debt	Treasury Bill Oct 08, 2026	0.65%	56.2%	150,000,000	$149.89M
42	Debt	U.S. Treasury	0.65%	56.8%	170,658,600	$149.09M
43	Debt	U.S. Treasury	0.65%	57.5%	151,653,100	$149.56M
44	Debt	United States Treasury Bill 02/18/2027	0.64%	58.1%	150,000,000	$147.61M
45	Debt	U.S. Treasury Bill, 0%, due 02/25/2027	0.64%	58.8%	150,000,000	$147.48M
46	Debt	Treasury Bill	0.64%	59.4%	150,000,000	$148.35M
47	Debt	U.S. Treasury	0.57%	60.0%	137,459,900	$130.82M
48	Debt	U.S. Treasury	0.54%	60.5%	128,105,600	$124.87M
49	Debt	United States Treasury Bills 0%	0.54%	61.0%	125,000,000	$123.84M
50	Debt	U.S. Treasury Bill, 0%, due 12/17/2026	0.54%	61.6%	125,000,000	$123.94M
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AMUSX Mutual Fund All Holdings

AMUSX holdings total 1526 positions. The top 10 holdings account for 26.5% of the fund, led by Us Treas Nts 4.375% 08/31/31 at 7.5%, U.S. Treasury Bill, 0%, due 10/29/2026 at 2.8%, NA at 2.7%.

AMUSX portfolio concentration is well-diversified, with the top 10 representing 26.5% of total assets. The largest sector exposure is Financials at 0.6%.

AMUSX sectors provide a detailed breakdown. AMUSX overlap shows how holdings compare to other funds in your portfolio.