Bitcoin ETFs surged last week, with inflows topping $2.2 billion from Feb. 12–16, eclipsing all US ETFs. BlackRock’s IBIT led, attracting $1.6 billion, comprising half of BlackRock’s net ETF flows. Fidelity’s Wise Origin and Ark 21Shares ETFs gained $648.5 million and $405 million respectively. Conversely, Grayscale Bitcoin Trust faced $624 million in outflows. New ETFs likely contribute to Bitcoin’s 91% four-month surge. Banks seek SEC’s nod to custody BTC funds.