v3.26.3
Financial Highlights Per Share Performance - Summary of Per Share Data (Details) - $ / shares
 3 Months Ended 4 Months Ended
Sep. 30, 2026
Sep. 30, 2026
Investment Company, Financial Highlights [Roll Forward]    
Principal Market NAV, initial creation [1] $ 23.15 $ 25
Net decrease in net assets from investment operations:    
Net investment income 0.08 0.1
Net realized and unrealized loss 8.16 6.29
Net decrease in net assets resulting from operations 8.24 6.39
Principal Market NAV, end of period $ 31.39 $ 31.39
Total return [2] 35.59% 25.56%
Ratios to average net assets:    
Net investment income 1.28% 1.26%
Gross Expenses 0.71% 0.70%
Total expenses 0.71% 0.70%
Net expenses after fees waived (0.71%) (0.70%)
[1] Represents the Seed Baskets.
[2] Total return represents the change from the Principal Market NAV per Share of the Seed Baskets to the period end Principal Market NAV per share. The weighted average NAV per Share of non-seed creations during the period was $23.10, which would represent a total return of 35.88%.