XML 44 R30.htm IDEA: XBRL DOCUMENT v3.23.2
FINANCIAL HIGHLIGHTS (Details) - $ / shares
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Per Share Operating Performance:        
Net asset value, beginning of period $ 33.77 $ 36.99 $ 35.45 $ 27.81
Total income (loss) (1.01) 2.58 (2.63) 11.83
Total expenses (0.06) (0.09) (0.12) (0.16)
Net increase (decrease) in net asset value (1.07) 2.49 (2.75) 11.67
Net asset value, end of period $ 32.70 $ 39.48 $ 32.70 $ 39.48
Total Return (3.17%) 6.73% (7.76%) 41.96%
Ratios to Average Net Assets        
Total income (loss) (2.45%) 6.58% (6.94%) 35.44%
Management fees 0.60% 0.60% 0.60% 0.60%
Total expenses excluding management fees 0.15% 0.30% 0.15% 0.30%
Net income (loss) (2.64%) 6.35% (7.31%) 35.00%