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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables) | 6 Months Ended
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Jun. 30, 2025
FAIR VALUE OF FINANCIAL INSTRUMENTS |
Summary of valuation of BNO's securities using fair value hierarchy | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
At June 30, 2025 |  | Total |  | Level I |  | Level II |  | Level III
Short-Term Investments | ​ | $ | 45,000,000 | ​ | $ | 45,000,000 | ​ | $ | — | ​ | $ | —
Exchange-Traded Futures Contracts | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Foreign Contracts | ​ |  | (10,517,750) | ​ |  | (10,517,750) | ​ |  | — | ​ |  | —
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
At December 31, 2024 |  | Total |  | Level I |  | Level II |  | Level III
Short-Term Investments | ​ | $ | 75,000,000 | ​ | $ | 75,000,000 | ​ | $ | — | ​ | $ | —
Exchange-Traded Futures Contracts | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Foreign Contracts | ​ | ​ | 2,601,040 | ​ | ​ | 2,601,040 | ​ | ​ | — | ​ | ​ | —
Summary of fair value of derivative instruments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair Value of Derivative Instruments | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Statements of | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Financial | ​ | Fair Value at | ​ | Fair Value at
​ | ​ | Condition | ​ | June 30, | ​ | December 31,
Derivatives not Accounted for as Hedging Instruments |  | Location |  | 2025 |  | 2024
Futures - Commodity Contracts |  | Unrealized gain(loss) on open commodity futures contracts | ​ | $ | (10,517,750) | ​ | $ | 2,601,040
​
Summary of effect of derivative instruments on the statements of operations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | For the six months ended | ​ | For the six months ended
​ | ​ | ​ | ​ | June 30, 2025 | ​ | June 30, 2024
​ | ​ | ​ | ​ | ​ | ​ | Change in Unrealized | ​ | ​ | ​ | Change in Unrealized
Derivatives not | ​ | Location of Gain | ​ | Realized Gain (Loss) | ​ | Gain (Loss) on | ​ | Realized Gain (Loss) | ​ | Gain (Loss) on
Accounted for as | ​ | (Loss) on Derivatives | ​ | on Derivatives | ​ | Derivatives | ​ | in Derivatives | ​ | Derivatives
Hedging Instruments |  | Recognized in Income |  | Recognized in Income |  | Recognized in Income |  | Recognized in Income |  | Recognized in Income
Futures - Commodity Contracts | ​ | Realized gain (loss) on closed commodity futures contracts | ​ | $ | 10,453,730 | ​ | ​ | ​ | ​ | $ | 15,298,440 | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Change in unrealized gain (loss) on open commodity futures contracts | ​ | ​ | ​ | ​ | $ | (13,118,790) | ​ | ​ | ​ | ​ | $ | 3,027,290
​

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- Definition Tabular disclosure of financial instrument measured at fair value on recurring or nonrecurring basis. Includes, but is not limited to, instrument classified in shareholders' equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 + Details
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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4CC -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4CC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E + Details
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