v3.26.1
Statements of Operations - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
United States Commodity Index Fund        
Gain (loss) on trading of commodity futures contracts:        
Realized gain (loss) on closed commodity futures contracts $ 473,243 $ 5,378,223 $ 45,334,299 $ 23,065,405
Change in unrealized gain (loss) on open commodity futures contracts (14,106,177) (3,645,834) 3,844,510 (4,901,568)
Dividend income 2,141,223 1,701,806 4,035,571 3,191,566
Interest income 1,047,809 721,827 1,833,032 1,454,171
ETF transaction fees 3,500 1,050 6,300 4,200
Total Income (Loss) (10,440,402) 4,157,072 55,053,712 22,813,774
Expenses        
Management fees (Note 4) 727,233 459,134 1,332,687 876,923
Professional fees 104,575 67,817 190,983 152,735
Brokerage commissions 38,008 35,890 97,344 78,740
Directors' fees and insurance 21,609 9,258 47,957 22,028
Total Expenses 891,425 572,099 1,668,971 1,130,426
Net Income (Loss) $ (11,331,827) $ 3,584,973 $ 53,384,741 $ 21,683,348
Net Income (Loss) per share $ (2.9) $ 1.26 $ 14.96 $ 7.22
Net Income (Loss) per weighted average share $ (3.02) $ 1.11 $ 14.52 $ 6.89
Weighted average shares outstanding 3,751,099 3,240,000 3,677,348 3,145,304
United States Copper Index Fund        
Gain (loss) on trading of commodity futures contracts:        
Realized gain (loss) on closed commodity futures contracts $ 43,334,725 $ 9,306,562 $ 76,543,950 $ 10,936,687
Change in unrealized gain (loss) on open commodity futures contracts 16,842,690 (12,418,789) (53,734,867) 20,564,448
Dividend income 4,695,703 1,270,567 9,035,199 2,399,551
Interest income 1,911,207 579,815 4,159,414 1,210,607
ETF transaction fees 11,200 9,100 27,300 14,000
Total Income (Loss) 66,795,525 (1,252,745) 36,030,996 35,125,293
Expenses        
Management fees (Note 4) 1,218,212 285,630 2,427,044 554,027
Professional fees 193,434 85,176 308,174 157,227
Brokerage commissions 51,309 9,002 94,875 12,877
Directors' fees and insurance 38,598 7,073 74,902 16,849
Total Expenses 1,501,553 386,881 2,904,995 740,980
Net Income (Loss) $ 65,293,972 $ (1,639,626) $ 33,126,001 $ 34,384,313
Net Income (Loss) per share $ 3.44 $ (0.04) $ 2.91 $ 6.23
Net Income (Loss) per weighted average share $ 3.27 $ (0.28) $ 1.61 $ 5.83
Weighted average shares outstanding 19,964,835 5,940,556 20,614,365 5,892,818
United States Commodity Index Funds Trust        
Gain (loss) on trading of commodity futures contracts:        
Realized gain (loss) on closed commodity futures contracts $ 43,807,968 $ 14,684,785 $ 121,878,249 $ 34,002,092
Change in unrealized gain (loss) on open commodity futures contracts 2,736,513 (16,064,623) (49,890,357) 15,662,880
Dividend income 6,836,926 2,972,373 13,070,770 5,591,117
Interest income 2,959,016 1,301,642 5,992,446 2,664,778
ETF transaction fees 14,700 10,150 33,600 18,200
Total Income (Loss) 56,355,123 2,904,327 91,084,708 57,939,067
Expenses        
Management fees (Note 4) 1,945,445 744,764 3,759,731 1,430,950
Professional fees 298,009 152,993 499,157 309,962
Brokerage commissions 89,317 44,892 192,219 91,617
Directors' fees and insurance 60,207 16,331 122,859 38,877
Total Expenses 2,392,978 958,980 4,573,966 1,871,406
Expense waiver (Note 4) 0 0    
Net Income (Loss) $ 53,962,145 $ 1,945,347 $ 86,510,742 $ 56,067,661