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Schedule of Investments
Dec. 31, 2021
USD ($)
contract
Dec. 31, 2020
USD ($)
contract
Open Commodity Futures Contracts - Long [Member] | United States [Member]    
Notional Amount $ 15,757,241 [1] $ 7,378,984
Number of Contracts | contract 441 [1] 273
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ 548,509 [1] $ (21,964)
% of Partners' Capital 3.36% [1] (0.29%)
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG January 2022 contracts, expiring December 2021    
Notional Amount   $ 701,660
Number of Contracts | contract   23
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts   $ (10,280)
% of Partners' Capital   (0.14%)
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG February 2022 contracts, expiring January 2022    
Notional Amount $ 1,397,690  
Number of Contracts | contract 37  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ (17,590)  
% of Partners' Capital (0.11%)  
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG March 2022 contracts, expiring February 2022    
Notional Amount $ 1,315,010  
Number of Contracts | contract 36  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ (34,490)  
% of Partners' Capital (0.21%)  
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG April 2022 contracts, expiring March 2022    
Notional Amount $ 1,109,299  
Number of Contracts | contract 37  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ 188,291  
% of Partners' Capital 1.15%  
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG May 2022 contracts, expiring April 2022    
Notional Amount $ 1,102,674  
Number of Contracts | contract 37  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ 201,576  
% of Partners' Capital 1.24%  
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG June 2022 contracts, expiring May 2022    
Notional Amount $ 1,094,328  
Number of Contracts | contract 36  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ 194,112  
% of Partners' Capital 1.19%  
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG July 2022 contracts, expiring June 2022    
Notional Amount $ 1,192,300  
Number of Contracts | contract 37  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ 153,760  
% of Partners' Capital 0.94%  
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG September 2022 contracts, expiring August 2022    
Notional Amount $ 1,288,840  
Number of Contracts | contract 37  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ 59,810  
% of Partners' Capital 0.37%  
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG October 2022 contracts, expiring September 2022    
Notional Amount $ 1,448,300  
Number of Contracts | contract 37  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ (88,180)  
% of Partners' Capital (0.54%)  
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG November 2022 contracts, expiring October 2022    
Notional Amount $ 1,530,060  
Number of Contracts | contract 37  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ (129,240)  
% of Partners' Capital (0.79%)  
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG December 2022 contracts, expiring November 2022    
Notional Amount $ 1,572,550  
Number of Contracts | contract 37  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ (98,840)  
% of Partners' Capital (0.61%)  
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG January 2023 contracts, expiring December 2022    
Notional Amount $ 1,479,370  
Number of Contracts | contract 36  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ (6,970)  
% of Partners' Capital (0.04%)  
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG August 2022 contracts, expiring July 2022    
Notional Amount $ 1,226,820  
Number of Contracts | contract 37  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ 126,270  
% of Partners' Capital 0.77%  
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG November 2021 contracts, expiring October 2021    
Notional Amount   $ 649,795
Number of Contracts | contract   22
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts   $ (34,675)
% of Partners' Capital   (0.47%)
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG December 2021 contracts, expiring November 2021    
Notional Amount   $ 713,702
Number of Contracts | contract   23
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts   $ (43,712)
% of Partners' Capital   (0.59%)
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG February 2021 contracts, expiring January 2021    
Notional Amount   $ 625,427
Number of Contracts | contract   23
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts   $ (41,457)
% of Partners' Capital   (0.56%)
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG March 2021 contracts, expiring February 2021    
Notional Amount   $ 595,284
Number of Contracts | contract   23
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts   $ (14,304)
% of Partners' Capital   (0.19%)
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG April 2021 contracts, expiring March 2021    
Notional Amount   $ 522,925
Number of Contracts | contract   22
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts   $ 35,435
% of Partners' Capital   0.48%
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG May 2021 contracts, expiring April 2021    
Notional Amount   $ 568,664
Number of Contracts | contract   23
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts   $ 18,986
% of Partners' Capital   0.26%
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG June 2021 contracts, expiring May 2021    
Notional Amount   $ 579,127
Number of Contracts | contract   23
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts   $ 21,403
% of Partners' Capital   0.29%
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG July 2021 contracts, expiring June 2021    
Notional Amount   $ 589,700
Number of Contracts | contract   23
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts   $ 27,850
% of Partners' Capital   0.38%
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG August 2021 contracts, expiring July 2021    
Notional Amount   $ 561,704
Number of Contracts | contract   22
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts   $ 35,596
% of Partners' Capital   0.48%
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG September 2021 contracts, expiring August 2021    
Notional Amount   $ 618,613
Number of Contracts | contract   23
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts   $ 5,147
% of Partners' Capital   0.07%
Open Commodity Futures Contracts - Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG October 2021 contracts, expiring September 2021    
Notional Amount   $ 652,383
Number of Contracts | contract   23
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts   $ (21,953)
% of Partners' Capital   (0.30%)
Cash Equivalents [Member] | United States Money Market Funds [Member]    
Market Value   $ 1,000,000
% of Partners' Capital 85.82% 13.60%
Cash Equivalents [Member] | United States Money Market Funds [Member] | Goldman Sachs Financial Square Government Fund - Institutional Shares, 0.03%    
% of Partners' Capital 36.78%  
Cash Equivalents [Member] | United States Money Market Funds [Member] | RBC U.S. Government Money Market Fund - Institutional Shares 0.03%    
% of Partners' Capital 49.04%  
Cash Equivalents [Member] | United States Money Market Funds [Member] | RBC U.S. Government Money Market Fund - Institutional Share Class, 0.02%    
Principal Amount [2]   $ 1,000,000
Market Value [2]   $ 1,000,000
% of Partners' Capital [2]   13.60%
Cash Equivalents [Member] | United States [Member]    
Market Value $ 14,000,000  
Cash Equivalents [Member] | United States [Member] | Goldman Sachs Financial Square Government Fund - Institutional Shares, 0.03%    
Principal Amount 6,000,000  
Market Value 6,000,000  
Cash Equivalents [Member] | United States [Member] | RBC U.S. Government Money Market Fund - Institutional Shares 0.03%    
Principal Amount 8,000,000  
Market Value $ 8,000,000  
[1] Collateral amounted to $845,621 on open commodity futures contracts.
[2] Reflects the 7-day yield at December 31, 2020.