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Schedule of Investments
Dec. 31, 2022
USD ($)
contract
Dec. 31, 2021
USD ($)
contract
Number of Contracts | contract 9,597  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ (144,765,937) $ 1,362,413
Open Commodity Futures Contracts, Long | United States | NYMEX Natural Gas Futures NG February 2023 contracts, expiring January 2023    
Notional Amount [1] $ 574,231,687  
Number of Contracts | contract [1] 9,597  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts [1] $ (144,765,937)  
% of Partners' Capital [1] (33.72%)  
Open Commodity Futures Contracts, Long | United States | NYMEX Natural Gas Futures NG February 2022 contracts, expiring January 2022    
Notional Amount [2]   $ 370,182,887
Number of Contracts | contract [2]   9,961
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts [2]   $ 1,362,413
% of Partners' Capital [2]   0.37%
Cash Equivalents | United States | Money Market Funds    
Market Value $ 317,800,000 $ 243,443,000
% of Partners' Capital 74.02% 65.52%
Cash Equivalents | United States | Money Market Funds | Goldman Sachs Financial Square Government Fund - Institutional Shares    
Shares/Principal Amount [3]   $ 23,103,000
Market Value [3]   $ 23,103,000
% of Partners' Capital [3]   6.22%
Cash Equivalents | United States | Money Market Funds | Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares    
Shares/Principal Amount $ 317,800,000 [4] $ 163,800,000 [3]
Market Value $ 317,800,000 [4] $ 163,800,000 [3]
% of Partners' Capital 74.02% [4] 44.08% [3]
Cash Equivalents | United States | Money Market Funds | RBC U.S. Government Money Market Fund - Institutional Shares    
Shares/Principal Amount [3]   $ 56,540,000
Market Value [3]   $ 56,540,000
% of Partners' Capital [3]   15.22%
[1] Collateral amounted to $241,622,902 on open commodity futures contracts.
[2] Collateral amounted to $127,265,650 on open commodity futures contracts.
[3] Reflects the 7-day yield at December 31, 2021.
[4] Reflects the 7-day yield at December 31, 2022.