STOCK TITAN

United States Oil Fund holder nets 26,865-share buy

Ten percent owner HRT Financial LP reported net buying of United States Oil Fund (USO) shares over several days, with trades tied to short sale activity.

(Very High)
(Very Positive)
Form Type
4

Rhea-AI Filing Summary

United States Oil Fund, LP (USO) reported that ten percent owner HRT Financial LP made multiple open‑market purchases and sales of its Common Stock between September 11 and September 15, 2026. Reported activity totals 105,195 shares purchased and 78,330 shares sold, a net acquisition of 26,865 shares, at prices generally between about $153 and $161 per share.

The notes state that the reported positions result from short sales, and no Rule 10b5‑1 trading plan is indicated.

Positive

  • None.

Negative

  • None.

Insights

Analyzing...

Insider HRT FINANCIAL LP
Role 10% Owner
Bought 105,195 shs ($16.61M)
Sold 78,330 shs ($12.05M)
Type Security Shares Price Value
Sale Common Stock F1, F2 1,218 $160.76 $196K
Purchase Common Stock F1, F2 13,649 $155.30 $2.12M
Purchase Common Stock F1, F2 2,157 $156.52 $338K
Purchase Common Stock F1, F2 43,178 $157.37 $6.79M
Purchase Common Stock F1, F2 2,553 $158.08 $404K
Purchase Common Stock F1, F2 13,203 $159.24 $2.10M
Purchase Common Stock F1, F2 26,472 $160.00 $4.24M
Sale Common Stock F1, F2 44,935 $153.01 $6.88M
Purchase Common Stock F1, F2 3,621 $153.97 $558K
Sale Common Stock F1, F2 31,901 $154.85 $4.94M
Purchase Common Stock F1, F2 86 $156.27 $13K
Sale Common Stock F1, F2 98 $156.94 $15K
Sale Common Stock F1, F2 178 $157.72 $28K
Purchase Common Stock F1, F2 276 $158.72 $44K
Holdings After Transaction: Common Stock — 61,589 shares (Direct)
Footnotes (2)
  1. F1. We will provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.
  2. F2. Resulting from short sales.
Shares purchased 105,195 shares Total USO Common Stock reported bought by HRT Financial LP in this Form 4
Shares sold 78,330 shares Total USO Common Stock reported sold by HRT Financial LP in this Form 4
Net share change 26,865 shares Net buy (purchases minus sales) across all reported USO transactions
Largest single sale 44,935 shares at $153.01 per share Sale of USO Common Stock on September 11, 2026
Largest single purchase 43,178 shares at $157.37 per share Purchase of USO Common Stock on September 14, 2026
Highest reported trade price $160.76 per share Sale of 1,218 USO shares on September 15, 2026
Lowest reported trade price $153.01 per share Sale of 44,935 USO shares on September 11, 2026
ten percent owner regulatory
"HRT Financial LP is listed as a ten percent owner of the issuer"
short sales financial
"A footnote states the reported position is resulting from short sales"
Short sales are trades where an investor borrows shares and sells them immediately, aiming to buy them back later at a lower price and return them to the lender; the profit is the difference if the price falls. This matters to investors because short selling can signal negative expectations about a company, add downward pressure on a stock’s price, and carries unlimited loss risk if the stock rises instead of falls—like betting a borrowed item will be cheaper to replace later.
Rule 10b5-1 regulatory
"The document-level Rule 10b5-1 checkbox is not affirmed for these trades"
Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.
Form 4 regulatory
"This Form 4 reports HRT Financial LP’s transactions in USO Common Stock"
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider activity did HRT Financial LP report for USO in this Form 4?

HRT Financial LP, a ten percent owner of United States Oil Fund (USO), reported multiple open‑market purchases and sales of USO Common Stock between September 11 and 15, 2026, resulting in a net increase in its reported position.

How many USO shares did HRT Financial LP buy and sell in this filing?

The filing reports 105,195 shares purchased and 78,330 shares sold of United States Oil Fund (USO) Common Stock, for a net buy of 26,865 shares over the reported period.

Over what price range did HRT Financial LP trade USO shares?

Reported trades in United States Oil Fund (USO) Common Stock occurred at prices generally between about $153.01 per share and $160.76 per share, based on the individual transaction rows in the Form 4.

Were HRT Financial LP’s USO trades made under a Rule 10b5-1 plan?

The filing’s Rule 10b5‑1 checkbox is not affirmed, and there is no footnote describing a Rule 10b5‑1 or other pre‑arranged trading plan, so no such plan is reported for these United States Oil Fund (USO) transactions.

Is HRT Financial LP an officer or director of United States Oil Fund (USO)?

No. HRT Financial LP is reported solely as a ten percent owner of United States Oil Fund (USO) and is not identified in the Form 4 as a director or officer of the issuer.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Learn about SEC filing dates
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
HRT FINANCIAL LP

(Last)(First)(Middle)
3 WORLD TRADE CENTER, 175 GREENWICH STRE
76TH FLOOR

(Street)
NEW YORK NEW YORK 10007

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
United States Oil Fund, LP [ USO ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
09/10/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock09/11/2026S44,935D$153.01(1)161,583(2)D
Common Stock09/11/2026P3,621A$153.97(1)161,583(2)D
Common Stock09/11/2026S31,901D$154.85(1)161,583(2)D
Common Stock09/11/2026P86A$156.27(1)161,583(2)D
Common Stock09/11/2026S98D$156.94(1)161,583(2)D
Common Stock09/11/2026S178D$157.72(1)161,583(2)D
Common Stock09/11/2026P276A$158.72(1)161,583(2)D
Common Stock09/14/2026P13,649A$155.3(1)61,589(2)D
Common Stock09/14/2026P2,157A$156.52(1)61,589(2)D
Common Stock09/14/2026P43,178A$157.37(1)61,589(2)D
Common Stock09/14/2026P2,553A$158.08(1)61,589(2)D
Common Stock09/14/2026P13,203A$159.24(1)61,589(2)D
Common Stock09/14/2026P26,472A$160(1)61,589(2)D
Common Stock09/15/2026S1,218D$160.76(1)61,589(2)D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. We will provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.
2. Resulting from short sales.
Adam Nunes09/16/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

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