U.S. spot Bitcoin ETFs lost a net $228.6 million this week, compounding a $681.1 million drain the week before and pushing two-week outflows to roughly $910 million, according to flow data from SoSoValue. The back-to-back red weeks have dragged October into negative territory for the funds, which now sit down about $615 million for the month despite a roughly $293 million inflow at its start.

The selling was uneven rather than uniform. Outflows exceeded inflows on three of five trading days, with Friday closing at a net loss of $82.4 million, per Decrypt's ETF tracker. A $175.7 million inflow on Tuesday evaporated within a day, wiped out by $261.4 million in redemptions on Wednesday — the week's worst session. Thursday delivered a modest $5.1 million inflow before selling resumed on Friday.

What triggered the redemptions?

Wednesday's selling coincided with a hotter-than-expected consumer price index reading. Prices rose 3.7% year over year in September, above the 3.6% forecast, and a firmer producer price reading followed on Thursday. Together, the prints revived market bets on another Federal Reserve interest rate hike.

The macro logic is straightforward, though it explains sentiment rather than fundamentals. Higher rates lift Treasury yields, making a near-risk-free return of roughly 5% a direct competitor to Bitcoin exposure. Borrowing also becomes costlier and the dollar strengthens, squeezing the leveraged positions crypto traders rely on.

The pressure showed on-chain and in derivatives markets alike. Bitcoin briefly slipped below $80,000 on Thursday, and nearly $950 million in leveraged crypto positions were liquidated over 24 hours — about 90% of them bullish longs, according to CoinGlass. The decline also pushed the price below the average ETF holder's estimated cost basis near $82,300, Nexo analyst Iliya Kalchev told Decrypt. That threshold matters: holders sitting on losses are statistically more likely to redeem, which can extend outflow streaks.

How deep does the damage run?

October's slide began in earnest on October 7, when a $484.9 million single-day exit marked the funds' worst session since June. Ethereum and Solana ETFs have also posted net outflows this month, suggesting the pullback extends beyond a single asset class within crypto.

Still, the cumulative picture remains substantially positive. Since launching in January 2024, spot Bitcoin ETFs have attracted $57.3 billion in cumulative net inflows, per Decrypt's tracker. Total net assets stand at $104.29 billion according to SoSoValue; Decrypt's tracker puts the figure lower, at $100.2 billion — a discrepancy readers should note when comparing headlines across data providers.

Because issuers report flows daily, and institutions and financial advisers account for much of the capital, these figures function as a closely watched proxy for institutional sentiment. A $910 million two-week exit equals less than 1% of the funds' roughly $100 billion asset base — significant as a signal, marginal as a structural shift.

The October drawdown also erodes, but does not reverse, a period of steady accumulation. Whether the outflows persist depends heavily on the next inflation prints and the Federal Reserve's rate path. Bitcoin closed Friday near $81,590, down from about $82,337 a week earlier.

What comes next?

The immediate variable is macroeconomic: further hot inflation data would sustain the rate-hike bets that drove this fortnight's redemptions. Ethereum and Solana ETF outflows suggest broader risk-off positioning within crypto wrappers, not a Bitcoin-specific vote of no confidence — though inflow figures alone cannot settle that question.

Investors should watch whether the funds hold above the roughly $82,300 average cost basis; sustained trading below it has historically coincided with continued redemption pressure. Two red weeks do not break a $57.3 billion accumulation trend, but a third would test it.