US spot crypto ETFs pulled in $867 million in net inflows during the second week of March. BlackRock dominated, buying 8,727 Bitcoin through its Bitcoin ETF — roughly 78% of all Bitcoin ETF acquisitions that week. The Bitcoin ETF category alone recorded $763.4 million in fresh capital, equivalent to 11,117 BTC added to fund holdings.
Bitcoin ETFs: BlackRock Leads, Grayscale Cuts
Fidelity added 2,170 BTC, VanEck 211, ARK 21Shares 96, Bitwise 135, and Valkyrie 60. Grayscale was the sole seller, reducing holdings by 150 BTC. The wave of ETF buying pulled significant Bitcoin from exchange wallets, pushing available supply to its lowest since November 2017.
Ethereum ETFs Surge on Staked Product Launch
Ethereum ETFs netted $117.4 million, corresponding to 62,013 ETH. Fidelity led with 49,538 ETH bought, followed by Grayscale (3,416), ARK 21Shares (517), and Franklin (390). Bitwise sold 3,373 ETH. BlackRock debuted a new staked Ether ETF during the week, and the Ethereum Foundation revealed a 70,000 ETH staking initiative.
Altcoin ETFs: XRP Bleeds, Solana Shines
XRP-focused funds posted the biggest altcoin outflow at $28.07 million, with 20.76 million XRP sold. Solana ETFs stood out with $10.7 million in inflows, buying 121,800 SOL. Chainlink added $2.65 million, Polkadot $544,480, Hedera $655,150, and Dogecoin $193,360. Litecoin ETFs saw a modest $271,260 outflow, while Avalanche registered no material change.
BlackRock's head of digital assets, Robert Mitchnick, said most IBIT investors are long-term oriented retail and advisory clients. The $867 million weekly inflow, he noted, persists even during periods some analysts call bear markets. The capital deployment is widely interpreted as institutional strategic allocation, contrasting with retail speculation.