Bitcoin exchange-traded funds (ETFs) experienced a significant net outflow of $191.59 million on October 31. BlackRock's $IBIT led the decline with a $149.32 million outflow, followed by Ark Invest's $ARKB with $19.30 million, and Bitwise's $BITB with $17.88 million. Fidelity's $FBTC also saw a reduction of $11.97 million. In contrast, Grayscale's $GBTC bucked the trend, recording a net inflow of $6.88 million. Other ETFs, including those from Franklin, Valkyrie, and VanEck, reported no net flow changes, while Invesco and WisdomTree did not disclose their figures.