Bitcoin ETFs See Significant Inflows Bitcoin ETFs experienced a net inflow of 3,008 BTC on March 18, equating to approximately $244 million. Fidelity's Bitcoin ETF alone accounted for 1,506 BTC, raising its total holdings to 195,885 BTC, valued at $15.91 billion. Ethereum ETFs also saw inflows of 287 ETH, worth about $540,000, led by Invesco Galaxy Ethereum ETF.12