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FINANCIAL HIGHLIGHTS (Tables)

12 Months Ended

Dec. 31, 2022

FINANCIAL HIGHLIGHTS

Schedule of per share performance data and other supplemental financial data

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​	​	​	​	​	​	​	​	​	​	​
​	​	Year ended		​	Year ended		​	Year ended
​	​	December 31,		​	December 31,		​	December 31,		​
​		2022			2021			2020
Per Share Operating Performance:	​	​	​	​	​	​	​	​	​	​
Net asset value, beginning of year	​	$	11.65	​	$	7.74	​	$	8.43	​
Total income (loss)	​		5.78	​		4.01	​		(0.62)	​
Total expenses	​		(0.19)	​		(0.10)	​		(0.07)	​
Net increase (decrease) in net asset value	​		5.59	​		3.91	​		(0.69)	​
Net asset value, end of year	​	$	17.24	​	$	11.65	​	$	7.74	​
​	​	​	​	​	​	​	​	​	​	​
Total Return	​		47.98	%		50.52	%		(8.19)	%
​	​	​	​	​	​	​	​	​	​	​
Ratios to Average Net Assets	​			​			​			​
Total income (loss)	​		11.13	%		28.53	%		(3.59)	%
Management fees	​		0.75	%		0.75	%		0.75	%
Total expenses excluding management fees	​		0.61	%		1.28	%		1.41	%
Expense waived	​		(0.46)	%		(1.13)	%		(1.26)	%
Net expense excluding management fees	​		0.15	%		0.15	%		0.15	%
Net income (loss)	​		10.23	%		27.63	%		(4.49)	%

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