v3.26.3
Note 9 - Investing in Index Futures (Tables)
9 Months Ended
Sep. 30, 2026
Notes Tables  
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
  

Asset Derivatives

 

Fair Value

 

Liability Derivatives

 

Fair Value

 

September 30, 2026

           

Commodity contracts

 

Receivable for variation margin on open futures contracts

 $10,586,199 

Payable for variation margin on open futures contracts

 $— 

December 31, 2025

           

Commodity contracts

 

Receivable for variation margin on open futures contracts

 $— 

Payable for variation margin on open futures contracts

 $11,332,892 
Derivative Instruments, Gain (Loss) [Table Text Block]
  

Statements of
Operations Location

 

Net Realized
Gain (Loss)

  

Net Change in Unrealized
Appreciation/Depreciation

 

Three Months Ended September 30, 2026

          

Commodity contracts

 

Net realized gain (loss) from futures contracts

 $114,685,407  $— 
  

Net change in unrealized appreciation (depreciation) on futures contracts

  —   84,736,873 

Three Months Ended September 30, 2025

          

Commodity contracts

 

Net realized gain (loss) from futures contracts

 $17,956,102  $— 
  

Net change in unrealized appreciation (depreciation) on futures contracts

  —   11,839,522 

Nine Months Ended September 30, 2026

          

Commodity contracts

 

Net realized gain (loss) from futures contracts

 $373,712,545  $— 
  

Net change in unrealized appreciation (depreciation) on futures contracts

  —   3,820,278 

Nine Months Ended September 30, 2025

          

Commodity contracts

 

Net realized gain (loss) from futures contracts

 $48,119,207  $— 
  

Net change in unrealized appreciation (depreciation) on futures contracts

  —   (25,642,257)