Fidelity's Wise Origin Bitcoin Fund (FBTC) recorded a net outflow of approximately $125.6 million on September 30, 2026. This figure corresponds to the roughly $126 million in Bitcoin exposure sold by clients during the final session of the month.

The fund experienced significant volatility throughout September. On September 18, FBTC saw an inflow of $310.7 million, contrasting with the end-of-month outflows. Despite these fluctuations, no unusual operational activity was reported at Fidelity.

Broader market data shows that US spot Bitcoin ETFs faced a challenging mid-month period, with outflows exceeding $746 million between September 15 and 16. These movements occurred alongside Federal Reserve rate decisions and legislative uncertainty.

Despite the mid-month pressure, cumulative inflows for US spot Bitcoin ETFs in September are estimated to be between $2.4 billion and $2.8 billion. This suggests that long-term demand remained resilient despite the monthly volatility.