U.S. spot Bitcoin ETFs attracted $999 million in net inflows on Sept. 21, their largest daily total since Oct. 6 last year. SoSoValue data showed BlackRock’s IBIT led with $381 million, followed by ARK Invest and 21Shares’ ARKB at $289 million. The earlier Farside Investors breakdown reported slightly more precise figures of $381.4 million for IBIT and $289.1 million for ARKB, alongside $238.8 million for Fidelity FBTC, $61.7 million for Morgan Stanley MSBT, $21.6 million for Bitwise BITB, $3.3 million for Grayscale GBTC and $3.1 million for Grayscale Mini BTC. At the time of reporting, spot Bitcoin ETFs held $110.135 billion in net assets, equal to 6.3% of Bitcoin’s total market capitalization, while cumulative net inflows reached $56.16 billion. IBIT’s historical net inflows totaled $64.506 billion and ARKB’s reached $1.370 billion.