U.S. bitcoin spot ETFs attracted a combined net inflow of $149 million on October 27, marking the third consecutive day of inflows, SoSoValue data show. Ark Invest and 21Shares' ARKB led with $76.40 million in single-day inflows, bringing its cumulative net inflow to $21.87 billion, while BlackRock's IBIT followed with $65.27 million, raising its total to $653.71 billion. Total net assets of bitcoin spot ETFs stood at $155.88 billion as of the report time, representing 6.83% of bitcoin's market capitalization, with cumulative net inflows reaching $621.34 billion since launch.