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Condensed Schedule of Investments | Sep. 30, 2017 USD ($) Contracts
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Value/ Unrealized Gain (Loss) on Open Commodity Contracts | $ (18,634,130) |
Open Futures Contracts, Long [Member] | United States [Member] | NYMEX Natural Gas Futures NG November 2017 contracts, expiring October 2017 |  |
Notional Amount | $ 386,459,240 |
Number of Contracts | Contracts | 12,423 |
Value/ Unrealized Gain (Loss) on Open Commodity Contracts | $ (12,899,630) |
% of Partners' Capital | (2.46%) |
Open Futures Contracts, Long [Member] | United States [Member] | ICE Natural Gas Futures LD1 H November 2017 contracts, expiring November 2017 |  |
Notional Amount | $ 156,084,500 |
Number of Contracts | Contracts | 20,000 |
Value/ Unrealized Gain (Loss) on Open Commodity Contracts | $ (5,734,500) |
% of Partners' Capital | (1.10%) |
Total Open Futures Contracts [Member] | Open Futures Contracts, Long [Member] | United States [Member] |  |
Notional Amount | $ 542,543,740 | [1]
Number of Contracts | Contracts | 32,423 | [1]
Value/ Unrealized Gain (Loss) on Open Commodity Contracts | $ (18,634,130) | [1]
% of Partners' Capital | (3.56%) | [1]
Cash Equivalents [Member] | United States [Member] |  |
Market Value | $ 413,969,910 |
% of Partners' Capital | 79.02% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] |  |
Market Value | $ 393,969,910 |
% of Partners' Capital | 75.20% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 0.90%, 10/05/2017 [Member] |  |
Principal Amount | $ 15,000,000 |
Market Value | $ 14,998,508 |
% of Partners' Capital | 2.86% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 0.92%, 10/12/2017 [Member] |  |
Principal Amount | $ 20,000,000 |
Market Value | $ 19,994,408 |
% of Partners' Capital | 3.82% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 0.91%, 10/19/2017 [Member] |  |
Principal Amount | $ 20,000,000 |
Market Value | $ 19,990,950 |
% of Partners' Capital | 3.82% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 0.95%, 10/26/2017 [Member] |  |
Principal Amount | $ 10,000,000 |
Market Value | $ 9,993,403 |
% of Partners' Capital | 1.91% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 0.97%, 11/02/2017 [Member] |  |
Principal Amount | $ 15,000,000 |
Market Value | $ 14,987,133 |
% of Partners' Capital | 2.86% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.01%, 11/09/2017 [Member] |  |
Principal Amount | $ 15,000,000 |
Market Value | $ 14,983,669 |
% of Partners' Capital | 2.86% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 0.98%, 11/16/2017 [Member] |  |
Principal Amount | $ 20,000,000 |
Market Value | $ 19,974,956 |
% of Partners' Capital | 3.81% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.05%, 11/24/2017 [Member] |  |
Principal Amount | $ 20,000,000 |
Market Value | $ 19,968,650 |
% of Partners' Capital | 3.81% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.05%, 11/30/2017 [Member] |  |
Principal Amount | $ 20,000,000 |
Market Value | $ 19,965,167 |
% of Partners' Capital | 3.81% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.08%, 12/07/2017 [Member] |  |
Principal Amount | $ 15,000,000 |
Market Value | $ 14,970,129 |
% of Partners' Capital | 2.86% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.09%, 12/14/2017 [Member] |  |
Principal Amount | $ 20,000,000 |
Market Value | $ 19,955,600 |
% of Partners' Capital | 3.81% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.11%, 12/21/2017 [Member] |  |
Principal Amount | $ 20,000,000 |
Market Value | $ 19,950,500 |
% of Partners' Capital | 3.81% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.10%, 12/28/2017 [Member] |  |
Principal Amount | $ 20,000,000 |
Market Value | $ 19,946,467 |
% of Partners' Capital | 3.81% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.12%, 1/04/2018 [Member] |  |
Principal Amount | $ 10,000,000 |
Market Value | $ 9,970,576 |
% of Partners' Capital | 1.90% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.11%, 1/11/2018 [Member] |  |
Principal Amount | $ 15,000,000 |
Market Value | $ 14,953,038 |
% of Partners' Capital | 2.85% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.10%, 1/18/2018 [Member] |  |
Principal Amount | $ 15,000,000 |
Market Value | $ 14,950,496 |
% of Partners' Capital | 2.85% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.12%, 1/25/2018 [Member] |  |
Principal Amount | $ 10,000,000 |
Market Value | $ 9,964,072 |
% of Partners' Capital | 1.90% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.12%, 2/01/2018 [Member] |  |
Principal Amount | $ 10,000,000 |
Market Value | $ 9,961,904 |
% of Partners' Capital | 1.90% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.13%, 2/08/2018 [Member] |  |
Principal Amount | $ 10,000,000 |
Market Value | $ 9,959,375 |
% of Partners' Capital | 1.90% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.12%, 2/15/2018[Member] |  |
Principal Amount | $ 10,000,000 |
Market Value | $ 9,957,758 |
% of Partners' Capital | 1.90% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.10%, 2/22/2018 [Member] |  |
Principal Amount | $ 15,000,000 |
Market Value | $ 14,934,600 |
% of Partners' Capital | 2.85% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.09%, 3/01/2018 [Member] |  |
Principal Amount | $ 20,000,000 |
Market Value | $ 19,908,981 |
% of Partners' Capital | 3.80% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.14%, 3/08/2018 [Member] |  |
Principal Amount | $ 10,000,000 |
Market Value | $ 9,950,296 |
% of Partners' Capital | 1.90% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.14%, 3/15/2018 [Member] |  |
Principal Amount | $ 10,000,000 |
Market Value | $ 9,948,208 |
% of Partners' Capital | 1.90% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | Us Treasury Bills 1.16%, 3/22/2018 [Member] |  |
Principal Amount | $ 15,000,000 |
Market Value | $ 14,917,583 |
% of Partners' Capital | 2.85% |
Cash Equivalents [Member] | United States [Member] | US Treasury Securities [Member] | U.S. Treasury Bills 1.17%, 3/29/2018 [Member] |  |
Principal Amount | $ 15,000,000 |
Market Value | $ 14,913,483 |
% of Partners' Capital | 2.85% |
Cash Equivalents [Member] | United States [Member] | Money Market Funds [Member] |  |
Market Value | $ 20,000,000 |
% of Partners' Capital | 3.82% |
Cash Equivalents [Member] | United States [Member] | Money Market Funds [Member] | Fidelity Investments Money Market Funds - Government Portfolio [Member] |  |
Principal Amount | $ 10,000,000 |
Market Value | $ 10,000,000 |
% of Partners' Capital | 1.91% |
Cash Equivalents [Member] | United States [Member] | Money Market Funds [Member] | Goldman Sachs Financial Square Funds - Government Fund - Class FS [Member] |  |
Principal Amount | $ 10,000,000 |
Market Value | $ 10,000,000 |
% of Partners' Capital | 1.91% |
[1] | Collateral amounted to $88,881,582 on open futures contracts.

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