US spot Bitcoin ETFs have recorded their first negative day in nearly two weeks, with investors pulling a net $148.7 million from the funds on September 30, according to data compiled by Farside Investors. The outflow ended a run of nine straight trading days of net inflows worth roughly $3.1 billion, one of the strongest stretches of institutional demand seen this year.
The numbers behind the run
The streak began on September 17, when the funds took in $159.5 million, and every session through September 29 finished in positive territory. The strongest day arrived on September 21, when $999 million flowed in, with BlackRock’s IBIT taking $381.4 million and Ark’s ARKB receiving $289.1 million, as reported by Altcoin Buzz citing Farside’s figures. September as a whole closed with about $2.65 billion in net inflows. The funds have now accumulated $57.564 billion in net inflows since launch, although Grayscale’s GBTC remains a $27.865 billion net drag on that total, according to the same data.
Why the money walked out
The reversal was highly concentrated. Fidelity’s FBTC accounted for $125.6 million of the $148.7 million outflow, while IBIT shed $9.5 million and Bitwise’s BITB lost $13.6 million, according to data compiled by Trader T and published by BigGo Finance. The turn came against a tough macro backdrop. Bitcoin had briefly topped $85,500 after a cooler than expected US inflation report, but the rally faded as the 10 year Treasury yield refused to drop below about 5.3 percent and the 30 year yield sat close to its highest level since 2002, as CoinDesk reported. When bond yields stay that high, risk assets lose their shine and the institutions that buy these ETFs turn cautious. The episode was a reminder that demand is concentrated in a handful of large funds, so a single day of redemptions can look dramatic even when the monthly picture stays healthy.
What UK investors should watch
At the time of writing Bitcoin traded at roughly $83,950, which works out at about £63,400 at the current pound rate near $1.32. That puts the coin more than 33 percent below its all time high of $126,208.50 set in October 2025. The Crypto Fear and Greed Index read 74, firmly in Greed territory, suggesting sentiment stayed upbeat even as the ETF bid wobbled. Analysts say the next big test is the September US payrolls report, which could decide whether October brings fresh ETF demand or a deeper pullback. For UK buyers on regulated exchanges, the message is the same as ever. Watch the daily flow data, not the headlines, and remember that institutional demand can turn on a single session.
