Key Takeaways:
A $1.26 billion block sale of BlackRock's iShares Bitcoin Trust on May 26 was likely a large investor rapidly exiting bitcoin exposure, not a hedge-fund arbitrage unwind, according to NYDIG.
"The size of the trade, the 2.3% execution discount, the absence of corresponding CME futures activity, and the limited universe of potential sellers collectively weigh against the view that the transaction represented a contemporaneous basis-trade unwind," Greg Cipolaro, global head of research at NYDIG, said.
The transaction involved 29.21 million IBIT shares changing hands off-exchange at $43.16 each, a $1.01 discount to the market price of $44.17. That 2.3% concession cost the seller roughly $29.5 million in execution value. The trade was reported through the FINRA/Nasdaq TRF Carteret facility, a venue for privately negotiated block transactions. NYDIG estimated the IBIT position represented exposure equivalent to about 3,700 CME bitcoin futures contracts, yet only 91 contracts traded during the minute of execution with no unusual volume spike.
The sale landed during a sustained period of weakness for U.S. spot bitcoin ETFs. The funds recorded daily net outflows from May 15 through May 29, with total assets falling to $94.17 billion from $107.75 billion. IBIT recorded about $720 million in net redemptions across May 26 and May 27. The willingness of a large holder to accept a significant discount to exit a bitcoin-linked position worth more than $1 billion suggests liquidity preferences can shift quickly when ETF outflows persist and bitcoin remains below $80,000.
NYDIG said ETF flow data cannot directly identify the seller or link specific redemptions to the block transaction. The position exceeded the reported holdings of every disclosed IBIT investor in recent 13F filings, making identification through public data alone difficult. Bitcoin has fallen 16% this year, while equities and commodities have attracted stronger flows, increasing pressure on crypto-linked products as investors reassess risk exposure. IBIT remains the largest spot bitcoin ETF by assets, but the block trade shows that headline assets under management can remain large even while marginal demand softens.
This article is for informational purposes only and does not constitute investment advice.
