The 13 U.S.-listed spot Bitcoin ETFs recorded net outflows of $450.4 million on Tuesday, September 15, 2026, according to Farside Investors. The reading reversed $159.9 million of inflows recorded on September 14 and marked the largest daily withdrawal since June 24, when the funds lost $469 million.
Data Snapshot
| Metric | Current | Previous | Change | Period | As of | Source |
|---|---|---|---|---|---|---|
| Total U.S. spot Bitcoin ETF net flow | (450.4) | 159.9 | — | September 15, 2026; previous trading day September 14, 2026 | 2026-09-16 | Farside Investors |
| IBIT net flow | (161.7) | — | — | September 15, 2026 | 2026-09-16 | Farside Investors |
| FBTC net flow | (214.8) | — | — | September 15, 2026 | 2026-09-16 | Farside Investors |
| BITB net flow | (12.4) | — | — | September 15, 2026 | 2026-09-16 | Farside Investors |
| ARKB net flow | (17.4) | — | — | September 15, 2026 | 2026-09-16 | Farside Investors |
| GBTC net flow | (44.1) | — | — | September 15, 2026 | 2026-09-16 | Farside Investors |
September 15 Reversed Prior Inflows
On the preceding trading day, the same group of ETFs attracted $159.9 million, according to Farside Investors.
Farside’s figures are denominated in US$m, with parentheses indicating outflows. The September 15 total was the biggest outflow since June 24, 2026, according to Cointelegraph; Bitcoin ETFs recorded $469 million in losses on that date.
FBTC and IBIT Led Withdrawals
Fidelity’s FBTC posted the largest single-fund outflow at $214.8 million on September 15. BlackRock’s IBIT followed with $161.7 million in net outflows, Farside data show.
The other listed products also recorded outflows: $44.1 million from GBTC, $17.4 million from ARKB and $12.4 million from BITB. Still, the fund-level figures show that the day’s redemptions were concentrated in FBTC and IBIT.
Bitcoin Decline and CLARITY Act Setback
Bitcoin was trading at $75,700, down 2.5% over the previous 24 hours at the time of reporting, Cointelegraph said. The ETF outflows occurred alongside that decline and coincided with the CLARITY Act failing to advance in the U.S. Senate. The available data establish the timing of these developments but do not identify a cause of the outflows.
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