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Condensed Schedule of Investments (Parenthetical) | 9 Months Ended
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Sep. 30, 2019 USD ($)
Collateral amount on open futures contracts | $ 12,337,947
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.40%, 10/03/2019 |
Interest rate | 2.40%
Expiration date | 10/03/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.41%, 10/10/2019 |
Interest rate | 2.41%
Expiration date | 10/10/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.42%, 10/17/2019 |
Interest rate | 2.42%
Expiration date | 10/17/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.40%, 10/24/2019 |
Interest rate | 2.40%
Expiration date | 10/24/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.37%, 10/31/2019 |
Interest rate | 2.37%
Expiration date | 10/31/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.40%, 11/07/2019 |
Interest rate | 2.40%
Expiration date | 11/07/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.38%, 11/14/2019 |
Interest rate | 2.38%
Expiration date | 11/14/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.37%, 11/21/2019 |
Interest rate | 2.37%
Expiration date | 11/21/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.33%, 11/29/2019 |
Interest rate | 2.33%
Expiration date | 11/29/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.20%, 12/05/2019 |
Interest rate | 2.20%
Expiration date | 12/05/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.16%, 12/12/2019 |
Interest rate | 2.16%
Expiration date | 12/12/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.15%, 12/19/2019 |
Interest rate | 2.15%
Expiration date | 12/19/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.07%, 12/26/2019 |
Interest rate | 2.07%
Expiration date | 12/26/2019
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.05%, 1/02/2020 |
Interest rate | 2.05%
Expiration date | 1/02/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.03%, 1/09/2020 |
Interest rate | 2.03%
Expiration date | 1/09/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.01%, 1/16/2020 |
Interest rate | 2.01%
Expiration date | 1/16/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.04%, 1/23/2020 |
Interest rate | 2.04%
Expiration date | 1/23/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.02%, 1/30/2020 |
Interest rate | 2.02%
Expiration date | 1/30/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.90%, 2/06/2020 |
Interest rate | 1.90%
Expiration date | 2/06/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.87%, 2/13/2020 |
Interest rate | 1.87%
Expiration date | 2/13/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.85%, 2/20/2020 |
Interest rate | 1.85%
Expiration date | 2/20/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.85%, 2/27/2020 |
Interest rate | 1.85%
Expiration date | 2/27/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.83%, 3/05/2020 |
Interest rate | 1.83%
Expiration date | 3/05/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.84%, 3/19/2020 |
Interest rate | 1.84%
Expiration date | 3/19/2020
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.88%, 3/26/2020 |
Interest rate | 1.88%
Expiration date | 3/26/2020

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