Note 8 - Financial Highlights (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

Financial Highlights [Table Text Block]

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
Net asset value per Share, beginning of period	$	13.48		$	12.00		$	12.28		$	12.45
Net investment loss(a)		(0.01	)		(0.01	)		(0.02	)		(0.02	)
Net realized and unrealized gain (loss)(b)		0.73			(0.61	)		1.94			(1.05	)
Net increase (decrease) in net assets from operations		0.72			(0.62	)		1.92			(1.07	)
Net asset value per Share, end of period	$	14.20		$	11.38		$	14.20		$	11.38
Total return, at net asset value(c)(d)		5.34	%		(5.17	)%		15.64	%		(8.59	)%
Ratio to average net assets:
Net investment loss(e)		(0.25	)%		(0.25	)%		(0.25	)%		(0.25	)%
Expenses(e)		0.25	%		0.25	%		0.25	%		0.25	%