FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of valuation of BNO'S securities (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
FAIR VALUE OF FINANCIAL INSTRUMENTS
Short-Term Investments	$ 62,750,000	$ 75,000,000
Exchange-Traded Futures Contracts
Foreign Contracts	2,337,370	2,601,040
Level I
FAIR VALUE OF FINANCIAL INSTRUMENTS
Short-Term Investments	62,750,000	75,000,000
Exchange-Traded Futures Contracts
Foreign Contracts	2,337,370	2,601,040
Level II
FAIR VALUE OF FINANCIAL INSTRUMENTS
Short-Term Investments	0	0
Exchange-Traded Futures Contracts
Foreign Contracts	0	0
Level III
FAIR VALUE OF FINANCIAL INSTRUMENTS
Short-Term Investments	0	0
Exchange-Traded Futures Contracts
Foreign Contracts	$ 0	$ 0