U.S. spot Bitcoin ETFs recorded their largest single-day outflow of October on Friday, shedding $643.2 million in the first full trading session following a $6.4 billion hack at Binance. The theft began at 4:05 p.m. ET Thursday, after U.S. markets closed, meaning Thursday’s $17.2 million in inflows predated the incident. This significant selling erased a four-day, $441 million inflow streak, leaving Bitcoin funds down approximately $202 million for the week and roughly $516 million for the month. Cumulative net inflows since the ETFs' January 2024 launch slipped to $57.4 billion, with total net assets standing at $103.2 billion.
Ethereum and Solana ETFs experienced deeper relative losses. Ethereum funds lost $155.7 million on Friday, extending a five-day outflow streak to about $431 million and pushing October losses to roughly $1.61 billion. Solana ETFs shed $10.8 million, marking their fifth consecutive day of outflows and totaling about $72 million for the week; they logged net inflows on only two days during the entire month. Spot crypto ETFs provide investors exposure to underlying assets through regular brokerage accounts, and daily flow reports serve as a key gauge of institutional sentiment.
Bitcoin prices fell about 4% to roughly $76,400 on Friday, triggering over $1.3 billion in leveraged position liquidations, before steadying near $77,520 on Saturday. While this drop was sharp, it was less severe than the nearly 11% plunge following a failed attack on Binance in 2018. Binance pledged to cover all losses using company funds and an emergency reserve, while stablecoin issuers Tether and Circle froze more than $2.3 billion in stolen assets. Macro factors also influenced markets, as the Federal Reserve held rates at 3.75% to 4% on Wednesday, with traders pricing odds above 70% for a December increase.
The immediate capital flight from spot Bitcoin ETFs underscores how these vehicles have become sensitive barometers for broader market confidence, particularly when major infrastructure providers like Binance face security breaches. Although the price reaction was muted compared to historical precedents, the magnitude of the outflows suggests that institutional and retail investors are prioritizing risk mitigation over long-term holding strategies in the wake of such a large-scale theft. The divergence between the relatively contained spot price decline and the heavy ETF selling indicates that fund flows may be driven by structural rebalancing or stop-loss mechanisms rather than pure panic, yet it highlights the fragility of investor trust when centralized exchanges are compromised.
Looking ahead, the resilience of the ETF market will depend on whether Binance can effectively restore confidence through its pledge to cover losses and if regulatory scrutiny intensifies around exchange custody practices. The bearish shift in prediction markets for Ethereum and Solana, alongside the persistent macro headwinds from potential Federal Reserve rate hikes, creates a complex environment where crypto assets must navigate both idiosyncratic security risks and broader monetary tightening. Investors should monitor whether the outflow trend stabilizes or extends into subsequent weeks, as sustained negative flows could pressure asset managers to adjust liquidity provisions or marketing strategies.
