On May 29, 2025, a significant $359 million outflow occurred in the U.S. spot Bitcoin ETF market, marking a notable shift in investor sentiment. The largest single-day exit since March signals an abrupt reversal of the previous 10 days’ trend of inflows. BlackRock’s IBIT recorded a rare influx of $125 million during this period. Key players including Fidelity, Grayscale, and Ark & 21Shares experienced substantial outflows, totaling -$166.3 million, – $107.5 million, and -$89.2 million respectively. 10-day inflows were reduced by this sudden withdrawal, leading to a decrease in cumulative ETF inflows. The lack of official statements from key providers adds to the uncertainty surrounding the market.