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US Spot Bitcoin ETFs Secure $524.8 Million Inflows Led by BlackRock and Fidelity

Spot Bitcoin exchange-traded funds extended a three-day buying streak to over $1 billion as inflows broadened across several major fund issuers.

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US spot Bitcoin exchange-traded funds recorded $524.8 million in net inflows on October 21, according to data from Farside Investors. BlackRock’s IBIT attracted $235 million while Fidelity’s FBTC added $212.7 million, with the two products accounting for approximately 85.3% of the session's total.

Positive flows were also reported across competing funds, including Grayscale’s GBTC and Bitcoin Mini Trust, Bitwise’s BITB, Ark’s ARKB, and Franklin’s EZBC, with no funds logging net withdrawals during the session. The performance brought cumulative inflows between October 19 and October 21 to $1.0747 billion, following $526.7 million on Monday and $23.2 million on Tuesday.

The source noted that daily net inflows measure capital movement into specific funds and do not account for individual investor holding periods, non-ETF spot trading, or potential offsetting market positions.

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