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ORGANIZATION AND BUSINESS (Details)
1 Months Ended 3 Months Ended
Feb. 26, 2008
USD ($)
$ / shares
shares
Nov. 30, 2007
shares
Mar. 31, 2026
USD ($)
contract
item
$ / shares
Dec. 31, 2025
$ / shares
Mar. 31, 2025
$ / shares
Dec. 31, 2024
$ / shares
ORGANIZATION AND BUSINESS            
Investment objective successive valuation days | item     30      
Range of allowed change in nav compared to benchmark, percentage     10.00%      
Investment objective threshold adjustment on average daily percentage change in price     10.00%      
Transaction fee for each order pay by Authorized Participants | $     $ 350      
Number of initially registered shares on Form S-1 with the U.S. Securities and Exchange Commission | shares   30,000,000        
Net asset value per unit | $ / shares $ 50   $ 103.44 $ 61.77 $ 64.28 $ 62.94
Number of shares issued | shares 300,000          
Value of shares issued | $ $ 15,000,000          
Minimum            
ORGANIZATION AND BUSINESS            
Range of allowed change in nav compared to benchmark, percentage     10.00%      
Maximum            
ORGANIZATION AND BUSINESS            
Range of allowed change in nav compared to benchmark, percentage     10.00%      
United States Contracts            
ORGANIZATION AND BUSINESS            
Number of contracts | contract     1,115      
Creation Baskets            
ORGANIZATION AND BUSINESS            
Number of shares per basket | item     50,000