Bitcoin ETFs sink into October outflows with $643M exit after Binance hack

US spot Bitcoin ETFs ended October with $515 million in net withdrawals, while Ether funds posted a record $1.61 billion in monthly outflows.

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  1. Impact on Bitcoin ETF Market Dynamics: The October Binance hack acted as a catalyst for market volatility, causing Bitcoin ETFs to shed $643 million on Friday alone and ending the month with $515 million in net outflows. This reversed a trend of consecutive inflows and marked the first negative monthly flow for these funds since June 2026.
  2. Ether ETF Outflow Trends and Comparison: Ether funds experienced more acute pressure than Bitcoin ETFs, recording $1.61 billion in monthly outflows for October—a record high surpassing the previous peak of $1.42 billion in November 2025. These outflows were severe enough to negate the year-to-date inflows for Ether products, leaving them with a net outflow of roughly $45 million for 2026.

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