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Financial Highlights | 3 Months Ended
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Mar. 31, 2015
Financial Highlights [Abstract] |
Financial Highlights | NOTE 6 — FINANCIAL HIGHLIGHTS The following table presents per share performance data and other supplemental financial data for the three months ended March 31, 2015 and 2014 for the shareholders. This information has been derived from information presented in the condensed financial statements.
|  | For the three months ended |  |  | For the three months ended |
|  | March 31, 2015 |  |  | March 31, 2014 |
|  | (Unaudited) |  |  | (Unaudited) |
Per Share Operating Performance: |  |  |  |  |  |  |  |
Net asset value, beginning of period |  | $ | 20.15 |  |  | $ | 35.23 |
Total income (loss) |  |  | (3.25) |  |  |  | 1.45 |
Total expenses |  |  | (0.03) |  |  |  | (0.07) |
Net increase (decrease) in net asset value |  |  | (3.28) |  |  |  | 1.38 |
Net asset value, end of period |  | $ | 16.87 |  |  | $ | 36.61 |
Total Return |  |  | (16.28) | % |  |  | 3.92 | %
Ratios to Average Net Assets |  |  |  |  |  |  |  |
Total income (loss) |  |  | (11.82) | % |  |  | 4.57 | %
Expenses excluding management fees* |  |  | 0.27 | % |  |  | 0.34 | %
Management fees* |  |  | 0.45 | % |  |  | 0.45 | %
Net income (loss) |  |  | (12.00) | % |  |  | 4.37 | %
| * | Annualized
Total returns are calculated based on the change in value during the period. An individual shareholder’s total return and ratio may vary from the above total returns and ratios based on the timing of contributions to and withdrawals from USO.

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