Bitcoin ETFs Pull In $517M in Biggest Inflow Since May

U.S. spot Bitcoin ETFs pulled in $517.19 million on Wednesday, their largest daily net inflow since May 4, as Bitcoin broke above $69,000 during a sharp rebound across crypto markets.

Eight of the 12 funds tracked by SoSoValue finished the session with net inflows. BlackRock’s IBIT led with $284.7 million, followed by Ark and 21Shares’ ARKB at $77.7 million and Fidelity’s FBTC at $62.4 million. Together, the three funds accounted for $424.8 million, or just over 82% of the total.

The surge followed a choppy stretch for regulated Bitcoin products. A Monday outflow earlier this month saw Bitcoin ETFs lose $144.6 million on August 10, ending a five-session run of inflows. Wednesday’s total came within roughly $15 million of the $532.3 million recorded on May 4, according to Farside data.

Treasury announcement precedes the inflow

Bitcoin’s move coincided with a U.S. Treasury announcement that it will at least double the maximum size of liquidity-support buybacks for longer-dated nominal Treasury securities. The cap will rise from $2 billion to at least $4 billion per operation across the 10-to-20-year and 20-to-30-year sectors. Treasury said the change takes effect September 9 and will remain in place through November 4.

That timing is important: Wednesday’s ETF inflow followed the announcement, not actual purchases under the expanded program. Bitcoin climbed above $69,000 for the first time in roughly two months during the same session, while the broader crypto market also rallied.

Treasury said an updated buyback schedule will be released later and plans to provide more information on future operation sizes at its November 4 Quarterly Refunding.