CoinMeta data: US spot Bitcoin ETF recorded a net outflow of $635.6 million on October 22, which offset nearly 59% of the $1.07 billion inflow accumulated in the previous three days. In just 24 hours, there was a huge fluctuation of $11.6 billion in ETF capital flows; the $524.8 million inflow on October 21 turned into a $635.6 million outflow the following day. This sharp reversal ended a three-day inflow trend, indicating that institutional demand for Bitcoin is facing new pressures amidst broader market selling.