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

SecurityUSO / United States Oil Fund, LP - Limited Partnership
InstitutionMarex Group plc
Latest Disclosed Ownership7,023 shares
Latest Disclosed Value $ 893,677
Marex Group plc reports 37.56% decrease in ownership of USO / United States Oil Fund, LP - Limited Partnership

On May 13, 2026 - Marex Group plc filed a 13F-HR form disclosing ownership of 7,023 shares of United States Oil Fund, LP - Limited Partnership (US:USO) valued at $893,677 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 11,247 shares of United States Oil Fund, LP - Limited Partnership. This represents a change in shares of -37.56% during the quarter. The current value of the position is $934,199 USD.

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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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)
2026-05-13 2026-03-31 13F UNITED STS OIL FD UNITS 91232N207 7,023 -4,224 -37.56 894 14.93 0.0037
2026-02-12 2025-12-31 13F UNITED STS OIL FD UNITS 91232N207 11,247 7,915 237.55 778 217.14 0.0049
2025-11-14 2025-09-30 13F UNITED STS OIL FD UNITS 91232N207 3,332 -1,572 -32.06 246 -31.56 0.0017
2025-08-19 2025-06-30 13F UNITED STS OIL FD UNITS 91232N207 4,904 4,904 359 0.0031
2026-04-02 2025-03-31 13F UNITED STS OIL FD UNITS 91232N207 0 -4,999 -100.00 0 -100.00
2026-04-02 2024-12-31 13F UNITED STS OIL FD UNITS 91232N207 4,999 4,999 378 0.0064
2026-04-02 2024-06-30 13F UNITED STS OIL FD UNITS 91232N207 0 0 0 0.0000
2026-04-02 2023-09-30 13F UNITED STS OIL FD UNITS 91232N207 0 -3,313 -100.00 0 -100.00
2026-04-02 2023-06-30 13F UNITED STS OIL FD UNITS 91232N207 3,313 3,313 211 0.0380
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.