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Schedule of Investments | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
--- | --- | ---
Cash Equivalents [Member] |  |  |
Market Value |  | $ 67,609,727 | $ 82,786,902
% of Partners' Capital |  | 91.83% | 87.56%
Cash Equivalents [Member] | United States Treasury Obligations [Member] |  |  |
Market Value |  | $ 61,659,727 | $ 62,786,902
% of Partners' Capital |  | 83.75% | 66.41%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.10%, 1/03/2019 |  |  |
Principal Amount |  | $ 3,000,000 |
Market Value |  | $ 2,999,654 |
% of Partners' Capital |  | 4.07% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.10%, 1/10/2019 |  |  |
Principal Amount |  | $ 3,000,000 |
Market Value |  | $ 2,998,440 |
% of Partners' Capital |  | 4.07% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.13%, 1/17/2019 |  |  |
Principal Amount |  | $ 3,000,000 |
Market Value |  | $ 2,997,187 |
% of Partners' Capital |  | 4.07% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.15%, 1/24/2019 |  |  |
Principal Amount |  | $ 3,000,000 |
Market Value |  | $ 2,995,927 |
% of Partners' Capital |  | 4.07% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.18%, 1/31/2019 |  |  |
Principal Amount |  | $ 3,000,000 |
Market Value |  | $ 2,994,612 |
% of Partners' Capital |  | 4.07% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.20%, 2/07/2019 |  |  |
Principal Amount |  | $ 2,000,000 |
Market Value |  | $ 1,995,529 |
% of Partners' Capital |  | 2.71% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.19%, 2/14/2019 |  |  |
Principal Amount |  | $ 2,000,000 |
Market Value |  | $ 1,994,696 |
% of Partners' Capital |  | 2.71% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.20%, 2/21/2019 |  |  |
Principal Amount |  | $ 2,000,000 |
Market Value |  | $ 1,993,823 |
% of Partners' Capital |  | 2.71% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.24%, 2/28/2019 |  |  |
Principal Amount |  | $ 3,000,000 |
Market Value |  | $ 2,989,294 |
% of Partners' Capital |  | 4.06% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.38%, 3/07/2019 |  |  |
Principal Amount |  | $ 2,000,000 |
Market Value |  | $ 1,991,496 |
% of Partners' Capital |  | 2.71% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.28%, 3/14/2019 |  |  |
Principal Amount |  | $ 2,000,000 |
Market Value |  | $ 1,990,980 |
% of Partners' Capital |  | 2.70% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.33%, 3/21/2019 |  |  |
Principal Amount |  | $ 2,000,000 |
Market Value |  | $ 1,989,906 |
% of Partners' Capital |  | 2.70% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.34%, 3/28/2019 |  |  |
Principal Amount |  | $ 3,000,000 |
Market Value |  | $ 2,983,445 |
% of Partners' Capital |  | 4.05% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.37%, 4/04/2019 |  |  |
Principal Amount |  | $ 3,000,000 |
Market Value |  | $ 2,981,826 |
% of Partners' Capital |  | 4.05% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.41%, 4/11/2019 |  |  |
Principal Amount |  | $ 3,000,000 |
Market Value |  | $ 2,980,125 |
% of Partners' Capital |  | 4.05% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.42%, 4/18/2019 |  |  |
Principal Amount |  | $ 3,000,000 |
Market Value |  | $ 2,978,645 |
% of Partners' Capital |  | 4.05% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.43%, 4/25/2019 |  |  |
Principal Amount |  | $ 3,000,000 |
Market Value |  | $ 2,977,200 |
% of Partners' Capital |  | 4.04% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.46%, 5/02/2019 |  |  |
Principal Amount |  | $ 2,000,000 |
Market Value |  | $ 1,983,699 |
% of Partners' Capital |  | 2.69% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.47%, 5/09/2019 |  |  |
Principal Amount |  | $ 2,000,000 |
Market Value |  | $ 1,982,684 |
% of Partners' Capital |  | 2.69% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.48%, 5/16/2019 |  |  |
Principal Amount |  | $ 1,000,000 |
Market Value |  | $ 990,813 |
% of Partners' Capital |  | 1.35% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.50%, 5/23/2019 |  |  |
Principal Amount |  | $ 2,000,000 |
Market Value |  | $ 1,980,554 |
% of Partners' Capital |  | 2.69% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.49%, 5/30/2019 |  |  |
Principal Amount |  | $ 2,000,000 |
Market Value |  | $ 1,979,657 |
% of Partners' Capital |  | 2.69% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.51%, 6/06/2019 |  |  |
Principal Amount |  | $ 2,000,000 |
Market Value |  | $ 1,978,550 |
% of Partners' Capital |  | 2.69% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.51%, 6/13/2019 |  |  |
Principal Amount |  | $ 3,000,000 |
Market Value |  | $ 2,966,313 |
% of Partners' Capital |  | 4.03% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.49%, 6/20/2019 |  |  |
Principal Amount |  | $ 2,000,000 |
Market Value |  | $ 1,976,767 |
% of Partners' Capital |  | 2.69% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.49%, 6/27/2019 |  |  |
Principal Amount |  | $ 1,000,000 |
Market Value |  | $ 987,905 |
% of Partners' Capital |  | 1.34% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.12%, 1/04/2018 |  |  |
Principal Amount |  |  | $ 3,000,000
Market Value |  |  | $ 2,999,721
% of Partners' Capital |  |  | 3.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.11%, 1/11/2018 |  |  |
Principal Amount |  |  | $ 3,000,000
Market Value |  |  | $ 2,999,079
% of Partners' Capital |  |  | 3.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.10%, 1/18/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,998,971
% of Partners' Capital |  |  | 2.12%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.12%, 1/25/2018 |  |  |
Principal Amount |  |  | $ 3,000,000
Market Value |  |  | $ 2,997,770
% of Partners' Capital |  |  | 3.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.12%, 2/01/2018 |  |  |
Principal Amount |  |  | $ 3,000,000
Market Value |  |  | $ 2,997,120
% of Partners' Capital |  |  | 3.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.13%, 2/08/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,997,625
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.12%, 2/15/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,997,225
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.10%, 2/22/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,996,851
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.09%, 3/01/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,996,444
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.14%, 3/08/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,995,847
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.14%, 3/15/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,995,417
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.16%, 3/22/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,994,889
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.17%, 3/29/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,994,393
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.19%, 4/05/2018 |  |  |
Principal Amount |  |  | $ 3,000,000
Market Value |  |  | $ 2,990,718
% of Partners' Capital |  |  | 3.16%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.22%, 4/12/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,993,182
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.23%, 4/19/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,992,695
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.25%, 4/26/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,992,078
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.27%, 5/03/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,991,460
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.32%, 5/10/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,990,612
% of Partners' Capital |  |  | 2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.37%, 5/17/2018 |  |  |
Principal Amount |  |  | $ 3,000,000
Market Value |  |  | $ 2,984,615
% of Partners' Capital |  |  | 3.16%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.43%, 5/24/2018 |  |  |
Principal Amount |  |  | $ 3,000,000
Market Value |  |  | $ 2,983,138
% of Partners' Capital |  |  | 3.16%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.43%, 5/31/2018 |  |  |
Principal Amount |  |  | $ 3,000,000
Market Value |  |  | $ 2,982,250
% of Partners' Capital |  |  | 3.15%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.45%, 6/07/2018 |  |  |
Principal Amount |  |  | $ 3,000,000
Market Value |  |  | $ 2,981,160
% of Partners' Capital |  |  | 3.15%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.46%, 6/14/2018 |  |  |
Principal Amount |  |  | $ 2,000,000
Market Value |  |  | $ 1,986,834
% of Partners' Capital |  |  | 2.10%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.49%, 6/21/2018 |  |  |
Principal Amount |  |  | $ 3,000,000
Market Value |  |  | $ 2,978,910
% of Partners' Capital |  |  | 3.15%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.50%, 6/28/2018 |  |  |
Principal Amount |  |  | $ 3,000,000
Market Value |  |  | $ 2,977,898
% of Partners' Capital |  |  | 3.15%
Cash Equivalents [Member] | United States [Member] | United States - Money Market Funds [Member] |  |  |
Market Value |  | $ 5,950,000 | $ 20,000,000
% of Partners' Capital |  | 8.08% | 21.15%
Cash Equivalents [Member] | United States [Member] | United States - Money Market Funds [Member] | Fidelity Investments Money Market Funds - Government Portfolio [Member] |  |  |
Principal Amount |  | $ 150,000 | $ 12,000,000
Market Value |  | $ 150,000 | $ 12,000,000
% of Partners' Capital |  | 0.20% | 12.69%
Cash Equivalents [Member] | United States [Member] | United States - Money Market Funds [Member] | Goldman Sachs Financial Square Funds - Government Fund - Class FS [Member] |  |  |
Principal Amount |  | $ 5,000,000 | $ 3,000,000
Market Value |  | $ 5,000,000 | $ 3,000,000
% of Partners' Capital |  | 6.79% | 3.17%
Cash Equivalents [Member] | United States [Member] | United States - Money Market Funds [Member] | Morgan Stanley Institutional Liquidity Funds - Government Portfolio [Member] |  |  |
Principal Amount |  | $ 800,000 | $ 5,000,000
Market Value |  | $ 800,000 | $ 5,000,000
% of Partners' Capital |  | 1.09% | 5.29%
Open Futures Contracts - Long [Member] | Foreign Contracts [Member] | ICE Brent Crude Oil Futures CO March 2019 contracts, expiring January 2019 [Member] |  |  |
Principal Amount | [1] | $ 79,887,910 |
Number of Contracts | [1] | 1,368 |
Value/Unrealized Gain (Loss) on Open Commodity Contracts | [1] | $ (6,289,510) |
% of Partners' Capital | [1] | (8.54%) |
Open Futures Contracts - Long [Member] | Foreign Contracts [Member] | ICE Brent Crude Oil Futures CO March 2018 contracts, expiring January 2018 [Member] |  |  |
Principal Amount | [2] |  | $ 88,966,270
Number of Contracts | [2] |  | 1,414
Value/Unrealized Gain (Loss) on Open Commodity Contracts | [2] |  | $ 5,587,910
% of Partners' Capital | [2] |  | 5.91%
[1] | Collateral amounted to $17,417,768 on open futures contracts.
[2] | Collateral amounted to $14,167,416 on open futures contracts.

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