Bitcoin fell from above $77,000 to below $73,000 as weaker risk sentiment, accelerating outflows from U.S. spot Bitcoin ETFs, and renewed U.S.-Iran tensions weighed on the market. BlackRock’s iShares Bitcoin Trust, IBIT, was central to the move: it saw a roughly $1.29 billion to $1.3 billion dark-pool block trade involving about 29 million to 29.2 million shares, while separately recording about $527.84 million to $528 million in net outflows on Wednesday after a Tuesday net outflow of $192.44 million. Across the U.S. spot Bitcoin ETF market, total daily outflows reached $733.43 million, extending an eight-day streak of withdrawals totaling more than $2 billion since May 14. Bloomberg ETF analyst Eric Balchunas said the large block trade was absorbed smoothly, underscoring IBIT’s liquidity despite the size of the sale.