The Coinbase and The Block study says stablecoins averaged over $400 million in transfers per hour in Q3 2026, with 73% of volume occurring outside U.S. banking hours over the 12 months ending July 31. Adjusted quarterly transfer volume reached $891 billion in Q3, four times its early-2023 level, according to the study figures reported here; Coinbase’s post highlights the 73% off-hours share here.