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Investments - Schedule of Fair Value of Derivative Instruments (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
-1x Short VIX Futures ETF [Member]    
Purchased Option Contracts:    
Fair Value Assets $ 442,800 $ 18,155,334
Fair Value Liabilities $ (5,122,740)
-1x Short VIX Futures ETF [Member] | Purchased Option Contracts [Member]    
Purchased Option Contracts:    
Statements of Assets and Liabilities Location Investments, at value Investments, at value
Fair Value Assets $ 442,800 $ 891,000
Fair Value Liabilities
-1x Short VIX Futures ETF [Member] | Short Futures Contracts [Member]    
Purchased Option Contracts:    
Statements of Assets and Liabilities Location [1] Unrealized Depreciation* Unrealized Appreciation*
Fair Value Assets $ 17,264,334
Fair Value Liabilities (5,122,740)
2x Long VIX Futures ETF [Member]    
Purchased Option Contracts:    
Fair Value Assets 15,861,139
Fair Value Liabilities $ (60,520,981)
2x Long VIX Futures ETF [Member] | Long Futures Contracts [Member]    
Purchased Option Contracts:    
Statements of Assets and Liabilities Location [1] Unrealized Appreciation* Unrealized Depreciation*
Fair Value Assets $ 15,861,139
Fair Value Liabilities $ (60,520,981)
[1] Includes cumulative appreciation (depreciation) of futures contracts as reported in the Schedule of Investments. Only current day’s variation margin is reported within the Statements of Financial Condition in receivable/payable on open futures.