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Condensed Schedule of Investments | Jun. 30, 2018 USD ($)
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Value/ Unrealized Gain (Loss) on Open Commodity Contracts | $ 203,630,680 |
Open Futures Contracts - Long [Member] | United States Contracts [Member] | NYMEX WTI Crude Oil Futures CL August 2018 contracts, expiring July 2018 [Member] |  |
Notional Amount | $ 1,607,927,970 | [1]
Number of Contracts | 24,431 | [1]
Value/ Unrealized Gain (Loss) on Open Commodity Contracts | $ 203,630,680 | [1]
% of Partners' Capital | 11.24% | [1]
Cash Equivalents [Member] |  |
Market Value | $ 1,831,192,379 |
% of Partners' Capital | 101.09% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] |  |
Market Value | $ 1,562,192,379 |
% of Partners' Capital | 86.24% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.56%, 7/05/2018 [Member] |  |
Principal Amount | $ 50,000,000 |
Market Value | $ 49,991,389 |
% of Partners' Capital | 2.76% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.56%, 7/12/2018[Member] |  |
Principal Amount | $ 60,000,000 |
Market Value | $ 59,971,583 |
% of Partners' Capital | 3.31% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.60%, 7/19/2018[Member] |  |
Principal Amount | $ 50,000,000 |
Market Value | $ 49,960,250 |
% of Partners' Capital | 2.76% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.61%, 7/26/2018[Member] |  |
Principal Amount | $ 75,000,000 |
Market Value | $ 74,916,927 |
% of Partners' Capital | 4.14% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.63%, 8/02/2018[Member] |  |
Principal Amount | $ 50,000,000 |
Market Value | $ 49,928,000 |
% of Partners' Capital | 2.76% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.71%, 8/09/2018[Member] |  |
Principal Amount | $ 50,000,000 |
Market Value | $ 49,908,187 |
% of Partners' Capital | 2.76% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.77%, 8/16/2018[Member] |  |
Principal Amount | $ 75,000,000 |
Market Value | $ 74,831,813 |
% of Partners' Capital | 4.13% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.82%, 8/23/2018[Member] |  |
Principal Amount | $ 75,000,000 |
Market Value | $ 74,801,250 |
% of Partners' Capital | 4.13% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.82%, 8/30/2018[Member] |  |
Principal Amount | $ 75,000,000 |
Market Value | $ 74,774,375 |
% of Partners' Capital | 4.13% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.85%, 9/06/2018[Member] |  |
Principal Amount | $ 50,000,000 |
Market Value | $ 49,829,708 |
% of Partners' Capital | 2.75% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.90%, 9/13/2018[Member] |  |
Principal Amount | $ 75,000,000 |
Market Value | $ 74,709,396 |
% of Partners' Capital | 4.12% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.92%, 9/20/2018[Member] |  |
Principal Amount | $ 50,000,000 |
Market Value | $ 49,785,688 |
% of Partners' Capital | 2.75% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.90%, 9/27/2018[Member] |  |
Principal Amount | $ 50,000,000 |
Market Value | $ 49,770,528 |
% of Partners' Capital | 2.75% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.87%,10/04/2018 [Member] |  |
Principal Amount | $ 75,000,000 |
Market Value | $ 74,632,864 |
% of Partners' Capital | 4.12% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.90%, 10/11/2018 [Member] |  |
Principal Amount | $ 60,000,000 |
Market Value | $ 59,680,400 |
% of Partners' Capital | 3.29% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.97%, 10/18/2018 [Member] |  |
Principal Amount | $ 60,000,000 |
Market Value | $ 59,645,750 |
% of Partners' Capital | 3.29% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.00%, 10/25/2018 [Member] |  |
Principal Amount | $ 50,000,000 |
Market Value | $ 49,681,000 |
% of Partners' Capital | 2.74% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.00%, 11/01/2018 [Member] |  |
Principal Amount | $ 60,000,000 |
Market Value | $ 59,594,100 |
% of Partners' Capital | 3.29% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.03%, 11/08/2018 [Member] |  |
Principal Amount | $ 50,000,000 |
Market Value | $ 49,637,986 |
% of Partners' Capital | 2.74% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.05%, 11/15/2018 [Member] |  |
Principal Amount | $ 50,000,000 |
Market Value | $ 49,613,736 |
% of Partners' Capital | 2.74% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.07%, 11/23/2018 [Member] |  |
Principal Amount | $ 70,000,000 |
Market Value | $ 69,422,014 |
% of Partners' Capital | 3.83% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.05%, 11/29/2018 [Member] |  |
Principal Amount | $ 70,000,000 |
Market Value | $ 69,405,438 |
% of Partners' Capital | 3.83% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.09%, 12/06/2018 [Member] |  |
Principal Amount | $ 70,000,000 |
Market Value | $ 69,364,050 |
% of Partners' Capital | 3.83% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.06%, 12/13/2018 [Member] |  |
Principal Amount | $ 60,000,000 |
Market Value | $ 59,439,000 |
% of Partners' Capital | 3.28% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.09%, 12/20/2018 [Member] |  |
Principal Amount | $ 60,000,000 |
Market Value | $ 59,406,600 |
% of Partners' Capital | 3.28% |
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.07%, 12/27/2018 [Member] |  |
Principal Amount | $ 50,000,000 |
Market Value | $ 49,490,347 |
% of Partners' Capital | 2.73% |
Cash Equivalents [Member] | United States - Money Market Funds [Member] |  |
Market Value | $ 269,000,000 |
% of Partners' Capital | 14.85% |
Cash Equivalents [Member] | United States - Money Market Funds [Member] | Fidelity Investments Money Market Funds - Government Portfolio [Member] |  |
Principal Amount | $ 69,000,000 |
Market Value | $ 69,000,000 |
% of Partners' Capital | 3.81% |
Cash Equivalents [Member] | United States - Money Market Funds [Member] | Goldman Sachs Financial Square Funds - Government Fund - Class FS [Member] |  |
Principal Amount | $ 100,000,000 |
Market Value | $ 100,000,000 |
% of Partners' Capital | 5.52% |
Cash Equivalents [Member] | United States - Money Market Funds [Member] | Morgan Stanley Institutional Liquidity Funds - Government Portfolio [Member] |  |
Principal Amount | $ 100,000,000 |
Market Value | $ 100,000,000 |
% of Partners' Capital | 5.52% |
[1] | Collateral amounted to $124,439,236 on open futures contracts.

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