According to @FarsideUK, US spot Bitcoin ETF net flows totaled -$315.9 million on 2025-08-20 (source: Farside Investors tweet on Aug 21, 2025 and ETF flow dashboard). Outflows were led by IBIT -$220 million and ARKB -$75.7 million, with FBTC -$7.5 million, GBTC -$9 million, BRRR -$4.3 million, BITB +$0.6 million, and BTCO, EZBC, HODL, BTCW, BTC at 0 for the day (source: Farside Investors).