Note 8 - Financial Highlights (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Financial Highlights [Table Text Block]

	Three Months Ended March 31,
	2022			2021(a)
Net asset value per Share, beginning of period	$	34.62		$	36.06
Net investment loss(b)		(0.02	)		(0.02	)
Net realized and unrealized gain (loss)(c)		2.32			(3.82	)
Net increase (decrease) in net assets from operations		2.30			(3.84	)
Net asset value per Share, end of period	$	36.92		$	32.22
Total return, at net asset value(d)(e)		6.64	%		(10.65	)%
Ratio to average net assets:
Net investment loss(f)		(0.25	)%		(0.25	)%
Expenses(f)		0.25	%		0.25	%