United States Oil Fund, LP - Limited Partnership
US ˙ ARCA ˙ US91232N2071

SecurityUSO / United States Oil Fund, LP - Limited Partnership
InstitutionCitigroup Inc
Latest Disclosed Ownership9,150 shares
Latest Disclosed Value $ 1,164,338
Citigroup Inc ownership in USO / United States Oil Fund, LP - Limited Partnership

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 9,150 shares of United States Oil Fund, LP - Limited Partnership (US:USO) valued at $1,164,338 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 15,347 shares of United States Oil Fund, LP - Limited Partnership. This represents a change in shares of -40.38% during the quarter. The current value of the position is $1,251,080 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (USO) in the form of stock options. The firm currently holds call options representing 820,900 of underlying shares valued at $104,459,525 USD and put options representing 2,000,000 of underlying shares valued at $254,500,000 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

USO / United States Oil Fund, LP - Limited Partnership Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F UNITED STS OIL FD UNITS 91232N207 9,150 -6,197 -40.38 1,164 9.71 0.0002
2026-02-13 2025-12-31 13F UNITED STS OIL FD UNITS 91232N207 15,347 2,871 23.01 1,061 15.33 0.0005
2025-11-10 2025-09-30 13F UNITED STS OIL FD UNITS 91232N207 12,476 -166,079 -93.01 920 -92.95 0.0004
2025-08-11 2025-06-30 13F UNITED STS OIL FD UNITS 91232N207 178,555 76,696 75.30 13,054 65.74 0.0064
2025-05-12 2025-03-31 13F UNITED STS OIL FD UNITS 91232N207 101,859 -39,910 -28.15 7,877 -26.46 0.0040
2025-02-12 2024-12-31 13F UNITED STS OIL FD UNITS 91232N207 141,769 133,146 1,544.08 10,711 1,679.07 0.0064
2024-11-12 2024-09-30 13F UNITED STS OIL FD UNITS 91232N207 8,623 1,653 23.72 603 8.66 0.0003
2024-08-12 2024-06-30 13F UNITED STS OIL FD UNITS 91232N207 6,970 -368,258 -98.14 555 -98.12 0.0004
2024-05-10 2024-03-31 13F UNITED STS OIL FD UNITS 91232N207 375,228 142,615 61.31 29,542 90.55 0.0194
2024-02-09 2023-12-31 13F UNITED STS OIL FD UNITS 91232N207 232,613 117,696 102.42 15,504 66.84 0.0109
2023-12-06 2023-09-30 13F/A-1 UNITED STS OIL FD UNITS 91232N207 114,917 -6,121 -5.06 9,292 20.82 0.0069
2023-11-09 2023-09-30 13F UNITED STS OIL FD UNITS 91232N207 114,917 -6,121 9,292 0.0028
2023-08-10 2023-06-30 13F UNITED STS OIL FD UNITS 91232N207 121,038 83,129 219.29 7,692 205.44 0.0050
2023-05-11 2023-03-31 13F UNITED STS OIL FD UNITS 91232N207 37,909 -11,357 -23.05 2,519 -27.10 0.0018
2023-02-09 2022-12-31 13F UNITED STS OIL FD UNITS 91232N207 49,266 -173,144 -77.85 3,454 -76.21 0.0028
2022-11-10 2022-09-30 13F UNITED STS OIL FD UNITS 91232N207 222,410 76,261 52.18 14,519 23.64 0.0104
2022-08-10 2022-06-30 13F UNITED STS OIL FD UNITS 91232N207 146,149 58,871 67.45 11,743 81.50 0.0087
2022-05-12 2022-03-31 13F UNITED STS OIL FD UNITS 91232N207 87,278 -229,966 -72.49 6,470 -62.48 0.0039
2022-02-10 2021-12-31 13F UNITED STS OIL FD UNITS 91232N207 317,244 104,925 49.42 17,245 54.53 0.0092
2021-11-10 2021-09-30 13F UNITED STS OIL FD UNITS 91232N207 212,319 -91,890 -30.21 11,160 -26.45 0.0066
2021-08-10 2021-06-30 13F UNITED STS OIL FD UNITS 91232N207 304,209 -54,134 -15.11 15,174 4.48 0.0091
2021-05-13 2021-03-31 13F UNITED STS OIL FD UNITS 91232N207 358,343 218,536 156.31 14,524 214.71 0.0094
2021-02-11 2020-12-31 13F UNITED STS OIL FD UNITS 91232N207 139,807 25,298 22.09 4,615 42.48 0.0027
2020-11-12 2020-09-30 13F UNITED STS OIL FD UNITS 91232N207 114,509 -282,605 -71.16 3,239 -70.93 0.0021
2020-08-12 2020-06-30 13F UNITED STS OIL FD UNITS 91232N207 397,114 397,114 11,143 0.0087
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-11 2026-03-31 13F UNITED STS OIL FD UNITS Call 820,900 104,460 n/a n/a n/a
2026-02-13 2025-12-31 13F UNITED STS OIL FD UNITS Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-10 2025-09-30 13F UNITED STS OIL FD UNITS Call 400,000 -38.83 29,500 -38.29 n/a n/a n/a
2025-08-11 2025-06-30 13F UNITED STS OIL FD UNITS Call 653,900 47,807 n/a n/a n/a
2025-02-12 2024-12-31 13F UNITED STS OIL FD UNITS Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-12 2024-09-30 13F UNITED STS OIL FD UNITS Call 675,000 92.86 47,196 69.43 n/a n/a n/a
2024-08-12 2024-06-30 13F UNITED STS OIL FD UNITS Call 350,000 27,856 n/a n/a n/a
2024-05-10 2024-03-31 13F UNITED STS OIL FD UNITS Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-09 2023-12-31 13F UNITED STS OIL FD UNITS Call 200,100 0.00 13,337 -17.58 n/a n/a n/a
2023-12-06 2023-09-30 13F/A UNITED STS OIL FD UNITS Call 200,100 0.00 16,180 27.24 n/a n/a n/a
2023-11-09 2023-09-30 13F UNITED STS OIL FD UNITS Call 200,100 16,180 n/a n/a n/a
2023-08-10 2023-06-30 13F UNITED STS OIL FD UNITS Call 200,100 0.00 12,716 -4.35 n/a n/a n/a
2023-05-11 2023-03-31 13F UNITED STS OIL FD UNITS Call 200,100 -42.84 13,295 -45.84 n/a n/a n/a
2023-02-09 2022-12-31 13F UNITED STS OIL FD UNITS Call 350,100 74.96 24,546 87.90 n/a n/a n/a
2022-11-10 2022-09-30 13F UNITED STS OIL FD UNITS Call 200,100 13,063 n/a n/a n/a
2022-05-12 2022-03-31 13F UNITED STS OIL FD UNITS Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-10 2021-12-31 13F UNITED STS OIL FD UNITS Call 243,588 -37.48 13,241 -35.34 n/a n/a n/a
2021-11-10 2021-09-30 13F UNITED STS OIL FD UNITS Call 389,588 14.72 20,477 20.89 n/a n/a n/a
2021-08-10 2021-06-30 13F UNITED STS OIL FD UNITS Call 339,588 -93.11 16,939 -91.52 n/a n/a n/a
2021-05-13 2021-03-31 13F UNITED STS OIL FD UNITS Call 4,929,488 329.28 199,792 427.07 n/a n/a n/a
2021-02-11 2020-12-31 13F UNITED STS OIL FD UNITS Call 1,148,304 19.47 37,906 39.41 n/a n/a n/a
2020-11-12 2020-09-30 13F UNITED STS OIL FD UNITS Call 961,160 -16.86 27,191 -16.18 n/a n/a n/a
2020-08-12 2020-06-30 13F UNITED STS OIL FD UNITS Call 1,156,008 32,438 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-11 2026-03-31 13F UNITED STS OIL FD UNITS Put 2,000,000 254,500 n/a n/a n/a
2026-02-13 2025-12-31 13F UNITED STS OIL FD UNITS Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-10 2025-09-30 13F UNITED STS OIL FD UNITS Put 125,900 -84.78 9,285 -84.64 n/a n/a n/a
2025-08-11 2025-06-30 13F UNITED STS OIL FD UNITS Put 827,000 60,462 n/a n/a n/a
2025-02-12 2024-12-31 13F UNITED STS OIL FD UNITS Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-12 2024-09-30 13F UNITED STS OIL FD UNITS Put 275,000 19,228 n/a n/a n/a
2024-08-12 2024-06-30 13F UNITED STS OIL FD UNITS Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-10 2024-03-31 13F UNITED STS OIL FD UNITS Put 100,000 0.00 7,873 18.12 n/a n/a n/a
2024-02-09 2023-12-31 13F UNITED STS OIL FD UNITS Put 100,000 6,665 n/a n/a n/a
2021-11-10 2021-09-30 13F UNITED STS OIL FD UNITS Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-08-10 2021-06-30 13F UNITED STS OIL FD UNITS Put 400,000 300.00 19,952 392.28 n/a n/a n/a
2021-05-13 2021-03-31 13F UNITED STS OIL FD UNITS Put 100,000 -80.15 4,053 -75.63 n/a n/a n/a
2021-02-11 2020-12-31 13F UNITED STS OIL FD UNITS Put 503,720 19.32 16,628 39.24 n/a n/a n/a
2020-11-12 2020-09-30 13F UNITED STS OIL FD UNITS Put 422,156 -43.86 11,942 -43.40 n/a n/a n/a
2020-08-12 2020-06-30 13F UNITED STS OIL FD UNITS Put 751,940 21,099 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.