CryptofeedProShares Says Bitcoin ETF Has Matched BTC Price Closely, 'Roll Cost' Concerns Are UnwarrantedPublikováno: 21.7.2023#Markets#news#Bitcoin#ETF#ProShares#ProShares Bitcoin Strategy ETF#MarketsCelý článek Interest on the ETF's cash balances helps offset the cost of rolling from one set of futures to the next, ensuring a low tracking error, the firm said.