from the article 1 unit = 1 share
didn't see this in the article ?
Although trading has not begun for the fund, there are already several pending orders, Sonnenshein said, with the lowest bid at $20 and the highest topping $35. The latter offer would value a bitcoin at more than $350. The cryptocurrency traded around $244 Monday afternoon.
if 1 share = 0,1 btc, then 1 unit has to be 1 share