Spot Bitcoin ETFs concentrate liquidity in U.S. hours, widening weekend spreads
Spot Bitcoin ETFs are concentrating Bitcoin liquidity into U.S. market sessions, which now represent 47% of global BTC spot volume versus 38% before ETFs. Kaiko data show IBIT trading at $16–18 billion per day, while weekend conditions feature wider spreads, with the average BTC–USDT spread rising from 0.012% on weekdays to 0.028% and activity falling roughly 20–40%.