Bitcoin ETFs Draw $770M in Four Days Even as Price Slips Below $80,000

Spot Bitcoin exchange-traded funds in the United States pulled in roughly $770 million during the first four trading days of September, marking one of the strongest openings to a month this year even as the underlying cryptocurrency struggled to hold the $80,000 level.

Net inflows across the funds reached about $769.9 million from Sept. 1 through Sept. 4, according to data compiled by Farside Investors. The buying accelerated sharply midweek, with Sept. 3 producing $730.8 million in net inflows -- the largest single-day haul since Jan. 14. BlackRock's iShares Bitcoin Trust (IBIT) dominated that session with approximately $454 million, followed by ARK 21Shares' ARKB at roughly $137.7 million and Fidelity's FBTC at $74.4 million.

The month began on weaker footing, with about $236.5 million in net outflows on Sept. 1 before flows reversed to $101 million of inflows the following day. Another $174.6 million entered the funds on Sept. 4, bringing total assets across spot Bitcoin ETFs above $103 billion, equivalent to more than 6% of Bitcoin's market capitalization.

The four-day stretch follows an August in which the funds attracted about $3.52 billion, their strongest month of 2026. The sustained institutional appetite contrasts with Bitcoin's historical tendency to underperform in September.