v2.4.0.8

Significant Accounting Policies (Tables) | 3 Months Ended
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Mar. 31, 2014
Accounting Policies [Abstract] |
Calculation of Funds' Final Net Asset Value for Creation and Redemption of Fund Shares | The times of the calculation of the Leveraged Funds’, the Short Euro Fund’s, the Geared VIX Funds’ and the Matching VIX Funds’ final net asset value for creation and redemption of fund Shares for the three months ended March 31, 2014 were as follows. All times are Eastern Standard Time:
|  | NAV Calculation Time |  | NAV Calculation Date
UltraShort Silver, Ultra Silver |  | 7:00 A.M. |  | March 31
UltraShort Gold, Ultra Gold |  | 10:00 A.M. |  | March 31
UltraShort DJ-UBS Crude Oil, Ultra DJ-UBS Crude Oil |  | 2:30 P.M. |  | March 31
UltraShort DJ-UBS Natural Gas, Ultra DJ-UBS Natural Gas |  | 2:30 P.M. |  | March 31
UltraShort DJ-UBS Commodity, Ultra DJ-UBS Commodity |  | 3:00 P.M. |  | March 31
UltraShort Australian Dollar, Ultra Australian Dollar |  | 4:00 P.M. |  | March 31
Short Euro, UltraShort Euro, Ultra Euro |  | 4:00 P.M. |  | March 31
UltraShort Yen, Ultra Yen |  | 4:00 P.M. |  | March 31
VIX Short-Term Futures ETF, Ultra VIX Short-Term Futures ETF, Short VIX Short-Term Futures ETF |  | 4:15 P.M. |  | March 31
VIX Mid-Term Futures ETF |  | 4:15 P.M. |  | March 31
Valuation of Investments | The following table summarizes the valuation of investments at March 31, 2014 using the fair value hierarchy:
|  | Level I - Quoted Prices |  |  | Level II - Other Significant Observable Inputs |  |  |  |
|  | Short-Term U.S. Government and Agencies |  |  | Futures Contracts* |  |  | Forward Agreements |  |  | Foreign Currency Forward Contracts |  |  | Swap Agreements |  |  | Total |
UltraShort DJ-UBS Commodity |  | $ | 2,486,733 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 102,269 |  |  | $ | 2,589,002 |
UltraShort DJ-UBS Crude Oil |  |  | 288,258,596 |  |  |  | (6,264,314 | ) |  |  | — |  |  |  | — |  |  |  | (692,931 | ) |  |  | 281,301,351 |
UltraShort DJ-UBS Natural Gas |  |  | 56,753,250 |  |  |  | 4,479,320 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 61,232,570 |
UltraShort Gold |  |  | 105,840,656 |  |  |  | 16,860 |  |  |  | 8,531,762 |  |  |  | — |  |  |  | — |  |  |  | 114,389,278 |
UltraShort Silver |  |  | 67,188,850 |  |  |  | 5,330 |  |  |  | 7,742,580 |  |  |  | — |  |  |  | — |  |  |  | 74,936,760 |
Short Euro |  |  | 6,227,257 |  |  |  | 47,900 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 6,275,157 |
UltraShort Australian Dollar |  |  | 19,227,467 |  |  |  | (1,221,879 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 18,005,588 |
UltraShort Euro |  |  | 414,310,854 |  |  |  | — |  |  |  | — |  |  |  | (3,724,310 | ) |  |  | — |  |  |  | 410,586,544 |
UltraShort Yen |  |  | 400,736,540 |  |  |  | — |  |  |  | — |  |  |  | 4,846,384 |  |  |  | — |  |  |  | 405,582,924 |
Ultra DJ-UBS Commodity |  |  | 2,410,896 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (114,128 | ) |  |  | 2,296,768 |
Ultra DJ-UBS Crude Oil |  |  | 112,053,990 |  |  |  | 2,109,314 |  |  |  | — |  |  |  | — |  |  |  | 959,951 |  |  |  | 115,123,255 |
Ultra DJ-UBS Natural Gas |  |  | 18,277,978 |  |  |  | (1,851,411 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 16,426,567 |
Ultra Gold |  |  | 148,339,252 |  |  |  | (16,860 | ) |  |  | (12,010,072 | ) |  |  | — |  |  |  | — |  |  |  | 136,312,320 |
Ultra Silver |  |  | 530,701,182 |  |  |  | (5,330 | ) |  |  | (58,138,361 | ) |  |  | — |  |  |  | — |  |  |  | 472,557,491 |
Ultra Australian Dollar |  |  | 2,775,892 |  |  |  | 192,985 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 2,968,877 |
Ultra Euro |  |  | 2,307,737 |  |  |  | — |  |  |  | — |  |  |  | 20,984 |  |  |  | — |  |  |  | 2,328,721 |
Ultra Yen |  |  | 2,471,851 |  |  |  | — |  |  |  | — |  |  |  | (41,229 | ) |  |  | — |  |  |  | 2,430,622 |
VIX Short-Term Futures ETF |  |  | 94,150,810 |  |  |  | (5,026,965 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 89,123,845 |
VIX Mid-Term Futures ETF |  |  | 48,695,771 |  |  |  | (2,007,210 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 46,688,561 |
Ultra VIX Short-Term Futures ETF |  |  | 173,853,508 |  |  |  | (29,701,827 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 144,151,681 |
Short VIX Short-Term Futures ETF |  |  | 169,490,113 |  |  |  | 8,083,199 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 177,573,312 |
Total Trust |  | $ | 2,666,559,183 |  |  | $ | (31,160,888 | ) |  | $ | (53,874,091 | ) |  | $ | 1,101,829 |  |  | $ | 255,161 |  |  | $ | 2,582,881,194 |
* | Includes cumulative appreciation/depreciation of futures contracts as reported in the Schedules of Investments. Only current day’s variation margin is reported within the Statements of Financial Condition in receivable/payable on open futures.
The following table summarizes the valuation of investments at December 31, 2013 using the fair value hierarchy:
|  | Level I - Quoted Prices |  |  | Level II - Other Significant Observable Inputs |  |  |  |
|  | Short-Term U.S. Government and Agencies |  |  | Futures Contracts* |  |  | Forward Agreements |  |  | Foreign Currency Forward Contracts |  |  | Swap Agreements |  |  | Total |
UltraShort DJ-UBS Commodity |  | $ | 3,453,890 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (27,665 | ) |  | $ | 3,426,225 |
UltraShort DJ-UBS Crude Oil |  |  | 247,584,623 |  |  |  | (1,232,773 | ) |  |  | — |  |  |  | — |  |  |  | (2,332,900 | ) |  |  | 244,018,950 |
UltraShort DJ-UBS Natural Gas |  |  | 18,274,713 |  |  |  | 1,042,300 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 19,317,013 |
UltraShort Gold |  |  | 148,988,329 |  |  |  | 14,520 |  |  |  | 5,633,053 |  |  |  | — |  |  |  | — |  |  |  | 154,635,902 |
UltraShort Silver |  |  | 114,826,066 |  |  |  | 14,200 |  |  |  | (2,227,857 | ) |  |  | — |  |  |  | — |  |  |  | 112,612,409 |
Short Euro |  |  | 7,902,056 |  |  |  | (33,231 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 7,868,825 |
UltraShort Australian Dollar |  |  | 24,198,507 |  |  |  | 917,605 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 25,116,112 |
UltraShort Euro |  |  | 437,847,159 |  |  |  | — |  |  |  | — |  |  |  | (13,748,507 | ) |  |  | — |  |  |  | 424,098,652 |
UltraShort Yen |  |  | 558,597,264 |  |  |  | — |  |  |  | — |  |  |  | 29,386,684 |  |  |  | — |  |  |  | 587,983,948 |
Ultra DJ-UBS Commodity |  |  | 2,816,688 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 15,078 |  |  |  | 2,831,766 |
Ultra DJ-UBS Crude Oil |  |  | 137,435,610 |  |  |  | 626,661 |  |  |  | — |  |  |  | — |  |  |  | 1,957,893 |  |  |  | 140,020,164 |
Ultra DJ-UBS Natural Gas |  |  | 58,921,011 |  |  |  | (3,656,539 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 55,264,472 |
Ultra Gold |  |  | 140,880,950 |  |  |  | (14,560 | ) |  |  | (6,812,974 | ) |  |  | — |  |  |  | — |  |  |  | 134,053,416 |
Ultra Silver |  |  | 467,868,976 |  |  |  | (14,200 | ) |  |  | (2,492,880 | ) |  |  | — |  |  |  | — |  |  |  | 465,361,896 |
Ultra Australian Dollar |  |  | 2,716,439 |  |  |  | (118,220 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 2,598,219 |
Ultra Euro |  |  | 2,455,863 |  |  |  | — |  |  |  | — |  |  |  | 100,962 |  |  |  | — |  |  |  | 2,556,825 |
Ultra Yen |  |  | 2,928,556 |  |  |  | — |  |  |  | — |  |  |  | (159,309 | ) |  |  | — |  |  |  | 2,769,247 |
VIX Short-Term Futures ETF |  |  | 207,636,383 |  |  |  | (16,652,686 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 190,983,697 |
VIX Mid-Term Futures ETF |  |  | 46,040,233 |  |  |  | (4,896,689 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 41,143,544 |
Ultra VIX Short-Term Futures ETF |  |  | 109,533,487 |  |  |  | (24,009,911 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 85,523,576 |
Short VIX Short-Term Futures ETF |  |  | 105,559,022 |  |  |  | 8,116,955 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 113,675,977 |
Total Trust |  | $ | 2,846,465,825 |  |  | $ | (39,896,568 | ) |  | $ | (5,900,658 | ) |  | $ | 15,579,830 |  |  | $ | (387,594 | ) |  | $ | 2,815,860,835 |
* | Includes cumulative appreciation/depreciation of futures contracts as reported in the Schedules of Investments as presented in the Form 10-K for the year ended December 31, 2013. Only current day’s variation margin is reported within the Statements of Financial Condition as presented in the Form 10-K for the year ended December 31, 2013 in receivable/payable on open futures.

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- Definition The entire disclosure for the information required in the supplementary schedule applicable to management investment companies summarizing the listing of holdings of unaffiliated investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C) -URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611225-123010 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12C -Article 12 + Details
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