US Bitcoin ETFs Draw $201.62M on March 16, BlackRock's IBIT Adds $139.40M
US Bitcoin spot ETFs recorded $201.62 million in net inflows on March 16, 2026, marking a sixth straight day of gains and lifting total net assets to $95.77 billion from $91.83 billion at the prior week's close, SoSoValue data show. BlackRock's iShares Bitcoin Trust (NASDAQ: IBIT) led with $139.40 million in net inflows, absorbing 1,880 BTC and raising cumulative inflows to $63.21 billion, while Fidelity's Wise Origin Bitcoin Fund (CBOE: FBTC) added $64.53 million and 871.15 BTC. Other US Bitcoin ETFs saw mixed flows, with smaller inflows into Bitwise, Valkyrie and Franklin products, outflows from Ark & 21Shares' ARKB and VanEck's HODL, and flat activity for Grayscale's GBTC and Bitcoin Mini Trust, Invesco's BTCO, WisdomTree's BTCW and Hashdex's DEFI; Ethereum spot ETFs posted $35.90 million in net inflows the same day, extending their streak to five days and bringing total US Ethereum product net assets to $13.63 billion with cumulative inflows of $11.83 billion.