U.S. spot Bitcoin ETFs recorded $131 million in net outflows on August 13, led by ARK Invest and 21Shares' ARKB, which alone shed $58.82 million. Spot Ethereum ETFs posted a smaller net outflow of $6.72 million the same day. The redemptions stand out because they landed on a day when broader U.S. equities were doing the opposite — the S&P 500 closed at a fresh record high above 7,800 after a cooler-than-expected July inflation print lifted risk appetite across stock markets.
That divergence is a reminder that Bitcoin ETF flows do not always move in lockstep with the rest of the risk-asset complex. Flows into the funds have been choppy in recent sessions rather than trending firmly in one direction: two days earlier, on August 11, BlackRock's IBIT pulled in roughly $50.2 million even as ARKB lost $11.5 million and Fidelity's FBTC gave back $4.1 million, according to daily flow data compiled by Farside Investors. The pattern suggests investors are rotating between individual funds rather than making a uniform bet on or against Bitcoin exposure through ETFs as a category.
A Smaller Ethereum Outflow
The Ethereum side of the market told a similar but more muted story. The $6.72 million ETH ETF outflow on August 13 was a fraction of the size of the Bitcoin redemptions, and it came just over a week after spot Ethereum ETFs had snapped an eight-week outflow streak, adding a net $60.8 million on August 5 alone, including roughly $50.3 million bought by BlackRock clients in a single session. A single day of modest outflows does not undo that reversal, but it does suggest the renewed appetite for ETH exposure through ETFs is still finding its footing rather than running in one clean direction.
Why the Gap Matters
For a market that has increasingly treated ETF flows as a proxy for institutional sentiment, a day of outflows during a broad equity rally complicates the simplest read on where big money stands on crypto right now. It does not necessarily signal bearishness on Bitcoin itself — profit-taking after a strong run, fund-specific rebalancing, or simple day-to-day noise in a still-young product category can all produce a print like this one. But it does mean traders watching ETF flows for directional confirmation got a genuinely mixed signal on a day when almost every other risk-asset chart was pointing up.
