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v3.20.1

Statements of Operations - USD ($) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Gain (loss) on trading of commodity futures contracts: |  |  |  |  |
Realized gain (loss) on closed futures contracts |  | $ (126,561,127) | $ 230,893,690 | $ (209,701,928) |
Change in unrealized gain (loss) on open futures contracts |  | 46,252,567 | (122,742,937) | 18,286,173 |
Realized gain (loss) on short-term investments |  | 93 | (15,781) | (1,172) |
Dividend income |  | 582,039 | 569,787 | 148,745 |
Interest income | [1] | 6,027,693 | 5,960,666 | 3,982,312 |
ETF transaction fees |  | 120,000 | 194,000 | 277,000 |
Total income (loss) |  | (73,578,735) | 114,859,425 | (187,008,870) |
Expenses |  |  |  |  |
General Partner management fees (Note 3) |  | 1,820,281 | 2,259,093 | 2,972,340 |
Professional fees |  | 802,399 | 928,798 | 1,390,036 |
Brokerage commissions |  | 1,155,153 | 1,424,713 | 1,728,440 |
Directors' fees and insurance |  | 70,739 | 69,624 | 64,982 |
License fees |  | 45,507 | 56,477 | 74,309 |
Registration fees |  | 144,440 | 83,258 | 204,998 |
Total expenses |  | 4,038,519 | 4,821,963 | 6,435,105 |
Net income (loss) |  | $ (77,617,254) | $ 110,037,462 | $ (193,443,975) |
Net income (loss) per limited partnership share |  | $ (7.44) | $ 1.01 | $ (13.84) | [2]
Net income (loss) per weighted average limited partnership share |  | $ (5.39) | $ 6.73 | $ (10.54) | [2]
Weighted average limited partnership shares outstanding |  | 14,401,574 | 16,359,928 | 18,356,071 | [2]
[1] | Interest income does not exceed paid in kind of 5%.
[2] | On January 4, 2018, there was a 1for4 reverse share split. The Statement of Operations have been adjusted for the period shown to reflect the 1for4 reverse share split on a retroactive basis.

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- Definition Amount of operating dividend income on securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.2) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 + Details
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- Definition The difference between the book value and the sale price of agreements to purchase or sell mineral resources, energy, and agricultural products at some future point. This element refers to the gain (loss) included in earnings and not to the cash proceeds. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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