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Schedule of Investments
Dec. 31, 2021
USD ($)
contract
Dec. 31, 2020
USD ($)
Market Value $ 145,447,000  
% of Partners' Capital 64.24%  
United States - Money Market Funds [Member] | Cash Equivalents [Member]    
Market Value   $ 30,347,000
% of Partners' Capital   8.68%
Goldman Sachs Financial Square Government Fund - Institutional Shares [Member] | United States - Money Market Funds [Member] | Cash Equivalents [Member]    
Shares/Principal Amount [1] $ 7,201,000  
Market Value [1] $ 7,201,000  
% of Partners' Capital [1] 3.18%  
Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares [Member] | United States - Money Market Funds [Member] | Cash Equivalents [Member]    
Shares/Principal Amount [1] $ 130,500,000  
Market Value [1] $ 130,500,000  
% of Partners' Capital [1] 57.64%  
Fidelity Investments Money Market Funds - Government Portfolio [Member] | United States - Money Market Funds [Member] | Cash Equivalents [Member]    
Shares/Principal Amount   $ 201,000
Market Value   $ 201,000
% of Partners' Capital   0.06%
RBC U.S. Government Money Market Fund - Institutional Shares [Member] | United States - Money Market Funds [Member] | Cash Equivalents [Member]    
Shares/Principal Amount $ 7,746,000 [1] $ 30,146,000
Market Value $ 7,746,000 [1] $ 30,146,000
% of Partners' Capital 3.42% [1] 8.62%
ICE Brent Crude Futures CO March 2022 contracts, expiring January 2022 [Member] | United Kingdom Contracts [Member] | Open Commodity Futures Contracts - Long [Member]    
Shares/Principal Amount [2] $ 213,935,240  
Number of Contracts | contract [2] 2,911  
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts [2] $ 12,482,340  
% of Partners' Capital [2] 5.51%  
[1] Reflects the 7-day yield at December 31, 2021.
[2] Collateral amounted to $57,197,387 on open commodity futures contracts.