BlackRock’s iShares Bitcoin Trust has quietly become one of the most powerful forces in crypto markets. A single dark-pool block sale recently moved $1.29 billion worth of IBIT shares in one transaction.
That trade, executed on May 27, 2026, involved roughly 29 million IBIT shares at approximately $43.16 each. It was the largest dark-pool transaction in the fund’s history, and it landed right as Bitcoin was already under downward pressure.
The ETF that ate the Bitcoin market
IBIT now holds approximately $46.3 billion in net assets as of July 9, 2026. On July 6, 2026, IBIT pulled in $209 million in a single day. In April 2026, cumulative inflows hit $3 billion for the month alone.
On May 18, 2026, US spot Bitcoin ETFs collectively saw $648.64 million in net outflows. IBIT accounted for $448.36 million of that, nearly 70% of the total redemptions across all spot Bitcoin funds.
