BlackRock's bitcoin ETF sheds $528 million, the second-largest daily outflow on record
IBIT recorded its second-biggest single-day net outflow since launch on Wednesday, missing a January record by less than half a million dollars, as the Iran-driven sell-off pulled institutional money out of bitcoin.
By Shaurya Malwa|Edited by Sam ReynoldsUpdated May 28, 2026, 5:58 a.m. Published May 28, 2026, 5:56 a.m. 2 min readMake preferred on
What to know:
- BlackRock’s iShares Bitcoin Trust saw $527.84 million in net outflows on Wednesday, its second-largest single-day withdrawal since launching in January and just shy of its record.
- The 11 U.S. spot bitcoin ETFs together lost $733.43 million that day, extending a multi-session streak of outflows that has pulled more than $2 billion from the complex over two weeks as bitcoin slid below $73,000.
- A $1.29 billion dark-pool block sale in IBIT on Tuesday and May’s shift from ETF accumulation to distribution suggest institutional investors are trimming bitcoin exposure amid heightened Middle East tensions and macro uncertainty.
BlackRock's iShares Bitcoin Trust shed $527.84 million on Wednesday, the second-largest single-day net outflow since the fund launched in January 2024, per SoSoValue data.
The figure missed the record by a razor-thin margin. IBIT's biggest outflow on record remains the $528.3 million pulled on Jan. 30, which Wednesday's draw came within about $500,000 of matching. The fund holds roughly $59 billion in assets and accounts for close to 4% of bitcoin's total supply, making it the largest single vehicle for institutional bitcoin exposure.
The outflow was part of a broader exodus. The 11 U.S.-listed spot bitcoin ETFs lost a combined $733.43 million on Wednesday, with Fidelity's FBTC shedding $60.30 million and Grayscale's GBTC losing $104.76 million alongside the IBIT draw. The complex has now posted outflows for several consecutive sessions, with more than $2 billion withdrawn over the past two weeks.
The selling landed on the same day bitcoin broke below $73,000. The cryptocurrency traded at $72,978 in Asian hours Thursday, down 3.4% over 24 hours, after U.S. airstrikes on an Iranian military site near the Strait of Hormuz reignited a conflict markets had started to price out. The ETF outflows and the price drop fed each other, with redemptions forcing BlackRock and other issuers to sell the underlying bitcoin to settle investor exits.
The IBIT draw came a day after a separate eye-catching move in the fund. On Tuesday, a single investor sold $1.29 billion of IBIT shares in one dark-pool block trade, as CoinDesk reported.
A dark-pool trade is a privately negotiated transaction that lets large players move size without tipping off the broader market.
That block sale was not the same as a net outflow, since buyers can step in to absorb the volume, and IBIT's actual net redemptions on Tuesday came to $192.44 million. But the two events together point to institutional players trimming bitcoin exposure as the macro backdrop turned.
The flow data has been pointing this way for weeks. ETF accumulation across the year had already thinned to a net of around 4,500 BTC, and May flipped from the steady buying of March and April into distribution, as reported on Wednesday. Bitcoin has dropped from above $82,000 on May 6 to under $73,000 now, and the ETF channel that drove the 2025 rally has spent the month pulling money the other way.
Whether the outflows reflect tactical de-risking amid Hormuz headlines or a deeper institutional pullback depends on what happens once the situation in the Middle East stabilizes. IBIT has gone through extended outflow streaks before during this cycle without a permanent reversal, with money returning each time the macro picture cleared.
ETFsBlackRockMore For You
Diverging trends: Ether slides below $2,000 while futures open interest hits record high of 16 million ETH
By Omkar Godbole|Edited by Shaurya Malwa2 hours ago
Ether drops below $2,000 amid heavy selling pressure, yet futures open interest hits a record high. This divergences suggests aggressive shorting.
What to know:
- Ether has fallen below $2,000 for the first time since March amid rising risk aversion, with losses of nearly 8% over the past week.
- Open interest in ether futures has hit a record high even as prices drop, a combination that suggests aggressive leveraged selling and a bearish market tilt.
White House reviews CFTC prediction-market rule as Trump backs federal control
1 hour ago
Diverging trends: Ether slides below $2,000 while futures open interest hits record high of 16 million ETH
2 hours ago
Bitcoin could be heading much lower, fund manager warns as $150 billion Treasury operation nears
5 hours ago
XRP drops 4% below $1.30 as heavy selling breaks key support zone
5 hours ago
Bitcoin drops below $73,000 as U.S. strikes on Iran spark $1 billion liquidations
5 hours ago
U.S. CFTC files request to erase Gemini settlement that it no longer considers fair
8 hours agoTop Stories
The crypto industry’s massive political war chest is starting to lean Republican ahead of midterms
12 hours ago
Google engineer insider-traded search results on Polymarket, Feds allege
12 hours ago
Elon Musk could become a top 5 corporate bitcoin holder if Tesla and SpaceX merge
15 hours ago
