U.S. Bitcoin ETF Inflows Surge $731M on September 3

U.S. Bitcoin ETF inflows just posted their strongest single-day showing in nearly eight months, with more than $730 million pouring into spot funds on September 3, 2026, as Bitcoin clawed back above the $80,000 mark. The rebound came just two trading sessions after investors yanked over $200 million from the same market, underscoring how quickly sentiment around these products can flip.

Key takeaways

• U.S. spot Bitcoin ETFs pulled in $731 million in net inflows on September 3, 2026, their biggest single-day total since January 14, 2026.
• BlackRock’s iShares Bitcoin Trust (IBIT) captured $454 million of that total, more than 60% of all money entering the sector that day.
• Combined net assets across U.S. Bitcoin ETFs reached $103.34 billion, equal to roughly 6.32% of Bitcoin’s total market capitalization.
• ARK 21Shares’ ARKB added $138 million and Fidelity’s FBTC brought in about $74 million during the same session.
• The rally followed a $236 million withdrawal on September 1, when IBIT alone shed roughly $201 million, showing how volatile these flows remain.

Record Session Pushes U.S. Bitcoin ETF Inflows to $731 Million

Thursday’s session marked the largest single-day haul for U.S. spot Bitcoin ETFs since mid-January, according to data from SoSoValue. The last time the group saw a bigger single-day number was January 14, when inflows hit $843.6 million. Thursday’s $730.9 million print was more than triple the size of any single day recorded during an 11-session run of positive flows that stretched through late August, signaling that this wasn’t just another incremental up day but a genuine surge in demand.