Note 8 - Financial Highlights (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Financial Highlights [Table Text Block]

	Three Months Ended March 31,
	2023			2022
Net asset value per Share, beginning of period	$	34.38		$	34.62
Net investment loss(a)		(0.02	)		(0.02	)
Net realized and unrealized gain(b)		3.17			2.32
Net increase in net assets from operations		3.15			2.30
Net asset value per Share, end of period	$	37.53		$	36.92
Total return, at net asset value(c)(d)		9.16	%		6.64	%
Ratio to average net assets:
Net investment loss(e)		(0.25	)%		(0.25	)%
Expenses(e)		0.25	%		0.25	%