According to Farside Investors, BlackRock's US spot Bitcoin ETF recorded a daily net flow of -$70.7 million, reported on Jan 13, 2026 (source: Farside Investors on X; data: farside.co.uk/btc). According to Farside Investors, this negative value denotes a net outflow for the day based on its ETF flow methodology published on its BTC ETF flow page (source: farside.co.uk/btc). According to Farside Investors, the page aggregates daily flows across US spot Bitcoin ETF issuers and provides methodology and disclaimers for verification (source: farside.co.uk/btc).