ProShares Bitcoin Strategy ETF (BITO) was +3% as of late Tuesday morning, in heavy volume after as the exchange traded fund staged an eagerly awaited debut on the New York Stock Exchange. The ETF's volume had already topped a hefty 14.5M shares as of 11:45 a.m. ET, placing it among the top movers. To put that in perspective, the SPDR S&P 500 ETF Trust (NYSEARCA:SPY) − the world's largest exchange traded fund − had 18M of volume so far in the session, while the prominent Invesco QQQ Trust (NASDAQ:QQQ) exchanged 12.8M shares. While BITO does not directly hold Bitcoin (BTC-USD), the new ETF aims to provide market participants with capital appreciation through managed exposure to Bitcoin-futures contracts. That's giving many investors a new way to participate in the Bitcoin market, as regulators have yet to allow U.S. ETFs to directly hold cryptocurrencies. BITO is also the first Bitcoin-futures ETF to win regulatory