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Condensed Schedule of Investments (Parenthetical) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017
Collateral Amount On Open Futures Contracts |  | $ 4,977,658
United States | U.S.Treasury Bills 1.19%, 4/05/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.19% |
Expiration date | 4/05/2018 |
United States | U.S.Treasury Bills 1.22%, 4/12/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.22% |
Expiration date | 4/12/2018 |
United States | U.S.Treasury Bills 1.23%, 4/19/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.23% |
Expiration date | 4/19/2018 |
United States | U.S.Treasury Bills 1.25%, 4/26/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.25% |
Expiration date | 4/26/2018 |
United States | U.S.Treasury Bills 1.27%, 5/03/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.27% |
Expiration date | 5/03/2018 |
United States | U.S.Treasury Bills 1.32%, 5/10/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.32% |
Expiration date | 5/10/2018 |
United States | U.S.Treasury Bills 1.37%, 5/17/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.37% |
Expiration date | 5/17/2018 |
United States | U.S.Treasury Bills 1.43%, 5/24/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.43% |
Expiration date | 5/24/2018 |
United States | U.S.Treasury Bills 1.43%, 5/31/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.43% |
Expiration date | 5/31/2018 |
United States | U.S.Treasury Bills 1.45%, 6/07/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.45% |
Expiration date | 6/07/2018 |
United States | U.S.Treasury Bills 1.46%, 6/14/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.46% |
Expiration date | 6/14/2018 |
United States | U.S.Treasury Bills 1.49%, 6/21/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.49% |
Expiration date | 6/21/2018 |
United States | U.S.Treasury Bills 1.50%, 6/28/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.50% |
Expiration date | 6/28/2018 |
United States | U.S.Treasury Bills 1.56%, 7/05/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.56% |
Expiration date | 7/05/2018 |
United States | U.S.Treasury Bills 1.56%, 7/12/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.56% |
Expiration date | 7/12/2018 |
United States | U.S.Treasury Bills 1.60%, 7/19/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.60% |
Expiration date | 7/19/2018 |
United States | U.S.Treasury Bills 1.61%, 7/26/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.61% |
Expiration date | 7/26/2018 |
United States | U.S.Treasury Bills 1.63%, 8/02/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.63% |
Expiration date | 8/02/2018 |
United States | U.S.Treasury Bills 1.71%, 8/09/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.71% |
Expiration date | 8/09/2018 |
United States | U.S.Treasury Bills 1.77%, 8/16/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.77% |
Expiration date | 8/16/2018 |
United States | U.S.Treasury Bills 1.82%, 8/23/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.82% |
Expiration date | 8/23/2018 |
United States | U.S.Treasury Bills 1.82%, 8/30/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.82% |
Expiration date | 8/30/2018 |
United States | U.S.Treasury Bills 1.85%, 9/06/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.85% |
Expiration date | 9/06/2018 |
United States | U.S.Treasury Bills 1.90%, 9/13/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.90% |
Expiration date | 9/13/2018 |
United States | U.S.Treasury Bills 1.92%, 9/20/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.92% |
Expiration date | 9/20/2018 |
United States | U.S.Treasury Bills 1.90%, 9/27/2018 | US Treasury Securities | Cash Equivalents |  |
Interest rate | 1.90% |
Expiration date | 9/27/2018 |

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