US-listed spot Bitcoin ETFs shed about $4.37 billion over a record 13-day outflow run from May 15 to June 3, 2026, before BlackRock's ETF took in 537 BTC on June 5, Lookonchain said.
US-listed spot Bitcoin ETFs recorded a record 13 straight trading days of net outflows between May 15 and June 3, 2026, losing about $4.37 billion. After that run, BlackRock's ETF halted its own outflows and posted a net inflow of 537 BTC worth about $33.18 million on June 5, according to Lookonchain. The on-chain monitoring account said that if the reversal persists, historical patterns suggest it could point to a possible medium-term bottom for Bitcoin. ETF flows are closely watched as gauges of institutional demand and broader market sentiment.