FSIXX Mutual Fund

NAV$1.00

AUM$31.3B

TER0.18%

Holdings60

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FSIXX Mutual Fund

NAV$1.00

Fidelity Institutional Treasury Only Portfolio Class I

AUM$31.3B

TER0.18%

Holdings60

See how much of FSIXX you already own

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

Showing top 50 of 60 holdings · as of Jul 31, 2026

FSIXX holdings, by weight
#	Ticker	Name	Weight	Cumulative	Mkt value	Sector	Industry
1	—	B 9/22/26 Govt	5.29%	5.3%	$6.91B	-	-
2	Debt	U.S. Treasury Bills , 0.0000% 0 2026-08-11	4.81%	10.1%	$6.28B	-	-
3	Debt	Treasury 2026-08-20	4.70%	14.8%	$6.15B	-	-
4	Debt	U.S. Treasury Bills 2026-08-18	4.24%	19.0%	$5.54B	-	-
5	Debt	Treasury Bill 20260908	4.08%	23.1%	$5.34B	-	-
6	Debt	Treasury Bill Sep 03, 2026	4.00%	27.1%	$5.23B	-	-
7	Debt	Treasury Bill Aug 25, 2026	3.62%	30.7%	$4.74B	-	-
8	Debt	Treasury Bill9/29/2026	3.59%	34.3%	$4.70B	-	-
9	Debt	United States TreasuryFinancials · Diversified Financial Services	3.52%	37.9%	$4.60B	Financials	Diversified Financial Services
10	Debt	U.S. Treasury Bills 2026-09-01	3.29%	41.1%	$4.30B	-	-
11	Debt	Us Treasury Bill 2026-08-04	3.25%	44.4%	$4.25B	-	-
12	Debt	Treasury Bill Oct 08, 2026	3.22%	47.6%	$4.21B	-	-
13	Debt	American Honda Finance Sr Unsecured 09/28 Var	2.85%	50.5%	$3.72B	-	-
14	Debt	Treasury Bill 0% Oct 01, 2026	2.83%	53.3%	$3.71B	-	-
15	Debt	Treasury Bill	2.53%	55.8%	$3.31B	-	-
16	Debt	Treasury Floating Rate Note 3.96% Oct 31, 2027 3.96 2027-10-31	2.51%	58.3%	$3.28B	-	-
17	Debt	Pimco Short Term Municipal Bond Active Exchange-Traded Fund Usetf	2.47%	60.8%	$3.24B	-	-
18	Debt	Treasury Bill 0% Oct 29, 2026	2.45%	63.3%	$3.20B	-	-
19	Debt	Treasury Bill 0.0 24-September-2026	2.44%	65.7%	$3.19B	-	-
20	Debt	Treasury Floating Rate Note 4.34% Jan 31, 2027Financials · Diversified Financial Services	2.39%	68.1%	$3.13B	Financials	Diversified Financial Services
21	Debt	U.S. Treasury Bill 3.590000% 3.59 2026-10-22	2.20%	70.3%	$2.88B	-	-
22	Debt	U.S. Treasury Bills 2026-10-15	1.90%	72.2%	$2.48B	-	-
23	Debt	Treasury Bill 0% Aug 13, 2026	1.86%	74.0%	$2.43B	-	-
24	Debt	Treasury Floating Rate Note 4.43% Apr 30, 2027Financials · Diversified Financial Services	1.83%	75.9%	$2.40B	Financials	Diversified Financial Services
25	Debt	Treasury Bill 10/06/2026	1.82%	77.7%	$2.38B	-	-
26	—	Us Tsy Frn 01/31/28 Govt	1.73%	79.4%	$2.27B	-	-
27	Debt	Treasury Floating Rate Note 4.44% Jul 31, 2027Financials · Diversified Financial Services	1.65%	81.1%	$2.15B	Financials	Diversified Financial Services
28	—	B 10/20/26 Govt	1.52%	82.6%	$1.98B	-	-
29	Debt	Treasury Floating Rate Note 4.75% Oct 31, 2026Financials · Diversified Financial Services	1.45%	84.0%	$1.89B	Financials	Diversified Financial Services
30	Debt	Treasury Floating Rate Note 3.73% Apr 30, 2028	1.42%	85.5%	$1.85B	-	-
31	Debt	Treasury Bill 0% Sep 17, 2026	1.29%	86.8%	$1.69B	-	-
32	—	B 10/13/26 Govt	1.21%	88.0%	$1.59B	-	-
33	Debt	Treasury Bill	1.13%	89.1%	$1.48B	-	-
34	—	B 11/3/26 Govt	1.05%	90.1%	$1.37B	-	-
35	Debt	Treasury Bill	1.05%	91.2%	$1.37B	-	-
36	Debt	Treasury Bill 11/12/2026	0.95%	92.1%	$1.24B	-	-
37	Debt	U.S. Treasury Bill, 0%, Due 11/17/2026	0.95%	93.1%	$1.24B	-	-
38	Debt	Wi Treasury Bill	0.91%	94.0%	$1.19B	-	-
39	Debt	Treasury Bill Nov 27, 2026	0.87%	94.9%	$1.14B	-	-
40	Debt	United States Treasury Bill 12/10/2026	0.83%	95.7%	$1.09B	-	-
41	—	United States Department 0 2026-10-27	0.74%	96.4%	$966.57M	-	-
42	Debt	Us T-Bill Dn 1/21/2027	0.71%	97.1%	$932.76M	-	-
43	Debt	Treasury Bill1/07/2027	0.64%	97.8%	$836.00M	-	-
44	Debt	U.S. Treasury Bill, 0%, Due 12/01/2026	0.64%	98.4%	$839.38M	-	-
45	Debt	United States Treasury Bill 01/14/2027	0.60%	99.0%	$786.23M	-	-
46	Debt	Treasury Bill 11/10/2026	0.57%	99.6%	$742.36M	-	-
47	—	United States Department 0 2026-12-03	0.43%	100.0%	$567.68M	-	-
48	Debt	Treasury Bill	0.41%	100.4%	$541.63M	-	-
49	Debt	United States Treasury Note/Bond .75% 31Aug2026Financials · Diversified Financial Services	0.40%	100.8%	$524.73M	Financials	Diversified Financial Services
50	—	United States Department 0 2026-12-17	0.38%	101.2%	$492.91M	-	-
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FSIXX Mutual Fund All Holdings

FSIXX holdings total 60 positions. The top 10 holdings account for 41.1% of the fund, led by B 9/22/26 Govt at 5.3%, U.S. Treasury Bills , 0.0000% 0 2026-08-11 at 4.8%, Treasury 2026-08-20 at 4.7%.

FSIXX portfolio concentration is moderate, with the top 10 representing 41.1% of total assets. The largest sector exposure is Financials at 12.3%.

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