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Schedule of Investments (Unaudited)
Jun. 30, 2025
USD ($)
contract
Dec. 31, 2024
USD ($)
contract
US    
Notional Amount $ 11,846,514 [1] $ 17,542,740
Number of Contracts | contract 304 [1] 515
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ 390,476 [1] $ 1,115,220
% of Partners' Capital 3.19% [1] 5.97%
US | NYMEX Natural Gas Futures NG February 2025 contracts, expiring January 2025    
Notional Amount   $ 1,507,310
Number of Contracts | contract   43
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts   $ 54,880
% of Partners' Capital   0.29%
US | NYMEX Natural Gas Futures NG March 2025 contracts, expiring February 2025    
Notional Amount   $ 1,325,307
Number of Contracts | contract   43
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts   $ 6,833
% of Partners' Capital   0.04%
US | NYMEX Natural Gas Futures NG April 2025 contracts, expiring March 2025    
Notional Amount   $ 1,226,637
Number of Contracts | contract   42
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts   $ 62,763
% of Partners' Capital   0.34%
US | NYMEX Natural Gas Futures NG May 2025 contracts, expiring April 2025    
Notional Amount   $ 1,299,545
Number of Contracts | contract   43
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts   $ 57,965
% of Partners' Capital   0.31%
US | NYMEX Natural Gas Futures NG June 2025 contracts, expiring May 2025    
Notional Amount   $ 1,353,278
Number of Contracts | contract   43
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts   $ 80,772
% of Partners' Capital   0.43%
US | NYMEX Natural Gas Futures NG July 2025 contracts, expiring June 2025    
Notional Amount   $ 1,475,965
Number of Contracts | contract   43
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts   $ 38,495
% of Partners' Capital   0.21%
US | NYMEX Natural Gas Futures NG August 2025 contracts, expiring July 2025    
Notional Amount $ 877,604 $ 1,416,560
Number of Contracts | contract 26 43
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ 20,956 $ 114,240
% of Partners' Capital 0.17% 0.61%
US | NYMEX Natural Gas Futures NG September 2025 contracts, expiring August 2025    
Notional Amount $ 874,450 $ 1,406,475
Number of Contracts | contract 26 43
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ 32,950 $ 116,587
% of Partners' Capital 0.27% 0.62%
US | NYMEX Natural Gas Futures NG October 2025 contracts, expiring September 2025    
Notional Amount $ 839,215 $ 1,404,005
Number of Contracts | contract 25 43
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ 59,035 $ 152,165
% of Partners' Capital 0.48% 0.82%
US | NYMEX Natural Gas Futures NG November 2025 contracts, expiring October 2025    
Notional Amount $ 910,105 $ 1,531,437
Number of Contracts | contract 25 43
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ 86,146 $ 148,143
% of Partners' Capital 0.70% 0.79%
US | NYMEX Natural Gas Futures NG December 2025 contracts, expiring November 2025    
Notional Amount $ 1,031,565 $ 1,695,166
Number of Contracts | contract 25 43
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ 108,436 $ 181,354
% of Partners' Capital 0.89% 0.97%
US | NYMEX Natural Gas Futures NG January 2026 contracts, expiring December 2025    
Notional Amount $ 1,131,075 $ 1,901,055
Number of Contracts | contract 25 43
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ 81,925 $ 101,023
% of Partners' Capital 0.67% 0.54%
US | NYMEX Natural Gas Futures NG February 2026 contracts, expiring January 2026    
Notional Amount $ 1,128,671  
Number of Contracts | contract 25  
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ 11,829  
% of Partners' Capital 0.10%  
US | NYMEX Natural Gas Futures NG March 2026 contracts, expiring February 2026    
Notional Amount $ 1,051,719  
Number of Contracts | contract 26  
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ 12,461  
% of Partners' Capital 0.10%  
US | NYMEX Natural Gas Futures NG April 2026 contracts, expiring March 2026    
Notional Amount $ 990,727  
Number of Contracts | contract 25  
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ (36,477)  
% of Partners' Capital (0.30%)  
US | NYMEX Natural Gas Futures NG May 2026 contracts, expiring April 2026    
Notional Amount $ 939,369  
Number of Contracts | contract 26  
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ 51,231  
% of Partners' Capital 0.42%  
US | NYMEX Natural Gas Futures NG June 2026 contracts, expiring May 2026    
Notional Amount $ 1,016,005  
Number of Contracts | contract 25  
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ (22,756)  
% of Partners' Capital (0.19%)  
US | NYMEX Natural Gas Futures NG July 2026 contracts, expiring June 2026    
Notional Amount $ 1,056,009  
Number of Contracts | contract 25  
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts $ (15,260)  
% of Partners' Capital (0.12%)  
Cash Equivalents | United States - Money Market Funds    
Market Value $ 7,000,000 $ 11,000,000
% of Partners' Capital 57.26% 58.91%
Cash Equivalents | United States - Money Market Funds | Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares, 4.43%    
Shares/Principal Amount [2]   $ 11,000,000
Market Value [2]   $ 11,000,000
% of Partners' Capital [2]   58.91%
Cash Equivalents | United States - Money Market Funds | Dreyfus Institutional Preferred Government Money Market Fund - Institutional Shares, 4.29%    
Shares/Principal Amount [3] $ 2,000,000  
Market Value [3] $ 2,000,000  
% of Partners' Capital [3] 16.36%  
Cash Equivalents | United States - Money Market Funds | Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares, 4.23%    
Shares/Principal Amount [3] $ 5,000,000  
Market Value [3] $ 5,000,000  
% of Partners' Capital [3] 40.90%  
[1] Collateral amounted to $103,594 on open commodity futures contracts.
[2] Reflects the 7-day yield at December 31, 2024.
[3] Reflects the 7-day yield at June 30, 2025.