Bitcoin spot ETFs recorded $528 million in total net inflows on October 21, marking the third consecutive day of positive flows. BlackRock's IBIT led the pack with $235 million in single-day inflows, bringing its cumulative historical net inflows to $66.498 billion. Fidelity's FBTC followed closely with $213 million in daily inflows, pushing its lifetime total to $10.588 billion. Total net assets across all Bitcoin spot ETFs now stand at $109.309 billion, representing 6.42% of Bitcoin's overall market capitalization. Cumulative historical net inflows since launch have reached $57.956 billion.