United States Oil Fund, LP (USO) reported a net income of $179,970,315 for the month ended September 30, 2026, according to a Form 8-K filing. The filing includes the fund's monthly account statement, which details the income and expenses for the period.

Income for the month totaled $181,109,185. This figure was driven primarily by realized trading gains on commodity futures, which amounted to $295,491,813. The fund also recorded realized gains on swap contracts of $31,904,629 and interest income of $5,242,007. However, these gains were partially offset by unrealized losses on the market value of commodity futures of $141,224,732 and unrealized losses on swap contracts of $10,312,916.

Total expenses for the month were $1,138,870, which included general partner management fees of $714,579, professional fees of $210,507, and brokerage commissions of $159,338.

The fund reported a decrease in shares outstanding during the month. Beginning with 9,400,698,279 shares, the fund recorded additions of 6,400,000 shares and withdrawals of 8,500,000 shares. The net change resulted in a total of 11,323,603 shares outstanding at the end of the month.

As a result of the net income and share activity, the fund's Net Asset Value (NAV) decreased from $1,790,469,813 at the beginning of the month to $1,646,935,704 at the end of the month. The NAV per share was reported at $145.44.