Note 8 - Financial Highlights (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

Financial Highlights [Table Text Block]

	Three Months Ended March 31,
	2021			2020
Net asset value per Share, beginning of period	$	18.03		$	14.56
Net investment loss(a)		(0.01	)		(0.01	)
Net realized and unrealized gain (loss)(b)		(1.91	)		0.82
Net increase (decrease) in net assets from operations		(1.92	)		0.81
Net asset value per Share, end of period	$	16.11		$	15.37
Total return, at net asset value(c), (d)		(10.65	)%		5.56	%
Ratio to average net assets:
Net investment loss(e)		(0.25	)%		(0.25	)%
Expenses(e)		0.25	%		0.25	%