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FINANCIAL HIGHLIGHTS (Details) - $ / shares	3 Months Ended		6 Months Ended
FINANCIAL HIGHLIGHTS (Details) - $ / shares	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Per Share Operating Performance:
Net asset value, beginning of period	$ 73.83	$ 40.40	$ 54.18	$ 33.07
Total income (loss)	6.49	9.57	26.24	16.97
Total expenses	(0.11)	(0.10)	(0.21)	(0.17)
Net increase (decrease) in net asset value	6.38	9.47	26.03	16.80
Net asset value, end of period	$ 80.21	$ 49.87	$ 80.21	$ 49.87
Total Return	8.64%	23.44%	48.04%	50.80%
Ratios to Average Net Assets
Total income (loss)	8.48%	21.48%	36.81%	42.66%
Management fees	0.45%	0.45%	0.45%	0.45%
Total expenses excluding management fees	0.09%	0.43%	0.14%	0.37%
Net income (loss)	8.35%	21.26%	36.52%	42.25%