Note 8 - Financial Highlights (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Financial Highlights [Table Text Block]

	Three Months Ended
	March 31,
	2020			2019
Net asset value per Share, beginning of period	$	16.85		$	14.52
Net investment loss(a)		(0.02	)		(0.02	)
Net realized and unrealized loss(b)		(3.84	)		(0.34	)
Net decrease in net assets from operations		(3.86	)		(0.36	)
Net asset value per Share, end of period	$	12.99		$	14.16
Total return, at net asset value(c)(d)		(22.91	)%		(2.48	)%
Ratio to average net assets:
Net investment loss(e)		(0.50	)%		(0.50	)%
Expenses(e)		0.50	%		0.50	%