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Investments - Schedule of Average Notional Value Contracts (Details) - USD ($)
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
-1x Short VIX Futures ETF [Member] | Long Futures Contracts [Member]    
Schedule of Average Notional Value Contracts [Line Items]    
Average notional value
-1x Short VIX Futures ETF [Member] | Short Futures Contracts [Member]    
Schedule of Average Notional Value Contracts [Line Items]    
Average notional value (273,506,050) (294,031,130)
-1x Short VIX Futures ETF [Member] | Purchased Options Contracts [Member]    
Schedule of Average Notional Value Contracts [Line Items]    
Average notional value 13,377,600 22,060,300
2x Long VIX Futures ETF [Member] | Long Futures Contracts [Member]    
Schedule of Average Notional Value Contracts [Line Items]    
Average notional value 689,615,808 361,208,955
2x Long VIX Futures ETF [Member] | Short Futures Contracts [Member]    
Schedule of Average Notional Value Contracts [Line Items]    
Average notional value
2x Long VIX Futures ETF [Member] | Purchased Options Contracts [Member]    
Schedule of Average Notional Value Contracts [Line Items]    
Average notional value