A $1.3 billion dark pool block in BlackRock’s IBIT last week likely came from a large directional holder rushing to exit a concentrated position, according to NYDIG head of research Greg Cipolaro. In his view, the seller accepted a steep price concession, effectively giving up about $29.5 million to get the trade done immediately.
A below-market sale to prioritize speed
Cipolaro said several signals point to a large holder unwinding exposure rather than a basis trade being closed out. The block was executed at $1.01 below the market price, with IBIT trading around $44.17 at the time. That discount suggests the seller cared more about certainty and speed than extracting the best possible price.
He wrote that the trade details alone do not fully answer why the position was sold, but they do show that at least one sophisticated holder was willing to pay a very large cost to remove a bitcoin-linked position worth $1.3 billion at once. The open question is whether the move came from a specific financial constraint or from a broader investment view.
NYDIG leans toward voluntary liquidation
Cipolaro said the seller could have been responding to investor redemptions, which would create forced selling, or trying to avoid the risk of exiting over several days. Still, he argued that the weak technical setup, ongoing spot bitcoin ETF outflows, and the willingness to absorb such a large execution discount fit a case for voluntary liquidation more closely than passive investor outflows or routine portfolio rebalancing.
That distinction matters. A directional holder choosing to exit sends a different message from an arbitrage-related unwind, because it speaks more directly to changes in conviction and positioning.
Bitcoin ETFs have posted 11 straight days of outflows
Data from Farside Investors shows U.S.-listed bitcoin ETFs have now recorded net outflows for 11 consecutive trading days. On the same day as the block trade, the category saw $334 million in net outflows. Since May 14, the last session when multiple funds posted net inflows, more than $2.9 billion has been withdrawn from these products.
Sentiment has also weakened. The Crypto Fear & Greed Index fell to 29/100 on Monday, placing the market in the “fear” zone, and the broader tone through May has remained cautious.
Market impact stayed limited as bitcoin fell 2.8%
Even with the size of the transaction, bitcoin dropped only 2.8% after the trade. Bloomberg ETF analyst Eric Balchunas said at the time that the market had absorbed the selling pressure. That muted reaction is consistent with how dark pools work: large orders are matched away from public exchanges, reducing visible disruption to the open market.
NYDIG said trades of this scale show institutions are still actively adjusting bitcoin exposure. For some market watchers, dark pool activity can serve as a useful signal of real buying or selling pressure taking shape outside public order books.