BlackRock's iShares Bitcoin Trust (IBIT) suffered near-record withdrawals this week as Bitcoin's price slid below $75,000 for the first time in months. The broader US spot Bitcoin ETF market has now turned negative year-to-date, with total net outflows hitting $596 million as of Wednesday's close.
The numbers behind the outflow
IBIT, the largest spot Bitcoin ETF by assets, saw redemptions approaching the fund's worst single-day outflow since its January 2024 launch. The exact figure wasn't disclosed by BlackRock, but multiple market monitors reported the drawdown was among the five largest in the fund's history. Bitcoin itself dropped under the $75,000 threshold midweek, erasing gains accumulated since early April.
Across all US spot Bitcoin ETFs, the cumulative year-to-date flow turned negative for the first time this cycle. Total outflows now stand at $596 million, according to data compiled by Bloomberg. That's a stark shift from the first quarter, when inflows regularly topped $1 billion a week.
Why the reversal matters
The turn signals a real change in sentiment. For most of 2026, institutional money flowing into spot ETFs was the main story — a steady bid under Bitcoin. Now that bid is gone, at least for the moment. The outflows are concentrated in a handful of products; smaller ETFs from issuers like Fidelity and Ark Invest have seen more modest withdrawals, but IBIT's size means its redemptions drag the whole category down.
The timing isn't great. Crypto markets were already on edge after a string of regulatory headlines out of Washington and a broader risk-off move in equities. A near-record withdrawal from the flagship ETF only adds to the unease.
No one knows if this is a one-week blip or the start of a sustained exodus. ETF analysts will be watching Monday's data closely for signs of stabilization. A few more days like this week and the year-to-date outflow could easily double. For now, the simple fact is that the big institutional money that powered Bitcoin's run earlier in 2026 is heading for the exits — and that's the story the market is trading on.
