U.S. spot Bitcoin exchange-traded funds lost $430.2 million to net withdrawals Thursday as a technology-stock selloff spread to crypto, with Fidelity and BlackRock leading the exits. Fidelity's Wise Origin Bitcoin Fund (FBTC) posted $199.9 million in net outflows and BlackRock's iShares Bitcoin Trust (IBIT) shed $105 million, according to Farside Investors. Together they accounted for about 71% of the day's withdrawals.