U.S. spot Bitcoin ETFs took in $526.7 million on Monday, their biggest single day since Sept. 22, according to Decrypt's ETF tracker. The last bigger session brought $714.7 million, which makes this the best day for the funds in nearly a month. The inflow interrupted two weeks of selling in which the funds shed about $910 million, including a $484.9 million exit on Oct. 7, which was their worst day since June. Friday closed with another $82.4 million of net selling, which makes Monday a sharp turn.