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BlackRock’s IBIT bitcoin ETF attracted $665 million in one day

BlackRock's iShares Bitcoin Trust recorded a $665.16 million net inflow on 19 October. It was IBIT's largest daily inflow since 7 October 2025, while all US spot bitcoin ETFs together added a net $526.6 million.

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BlackRock's IBIT bitcoin ETF attracted $665 million in one day
· Photo: World-Crypt

Outflows from Fidelity and Grayscale reduced the market total

IBIT’s $665.16 million net inflow was larger than the $526.6 million net inflow for all 12 US spot bitcoin ETFs. Fidelity’s FBTC lost $83.63 million and Grayscale’s GBTC lost $54.93 million.

BlackRock's IBIT bitcoin ETF attracted $665 million in one day

The remaining funds recorded no net flows. The two withdrawals explain the $138.56 million difference between IBIT’s result and the total for the whole group.

The group recorded its strongest day since 22 September

The $526.6 million group inflow reversed an $82.39 million outflow on 16 October. It was the strongest daily result for US spot bitcoin ETFs in nearly a month.

Trading volume across the funds reached $2.09 billion. IBIT accounted for $1.76 billion of that amount, compared with $135.9 million for FBTC and $83 million for GBTC.

Metric Value
IBIT net inflow $665.16 million
All US spot bitcoin ETFs $526.6 million net inflow
Fidelity FBTC $83.63 million net outflow
Grayscale GBTC $54.93 million net outflow
Date 19 October 2026
Previous larger IBIT day 7 October 2025

IBIT did not set an all-time record

The 19 October figure was IBIT’s largest one-day inflow since 7 October 2025, not the largest result in the fund’s full history. The date gives the number a clear comparison without turning it into an absolute record.

The 12 funds had cumulative net inflows of $57.40 billion and total net assets of $105.46 billion after the session, according to SoSoValue data cited in the report.

BlackRock's IBIT bitcoin ETF attracted $665 million in one day

The figure describes fund flows, not a price forecast

IBIT is a bitcoin exchange-traded fund, not a BlackRock share or a market index. The $665.16 million figure measures net money entering that product during one trading day.

A strong inflow shows demand for the fund, but it does not guarantee a bitcoin price increase. Spot trading, derivatives, liquidity and wider market news can still move the price in either direction.

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This article is for information only and is not investment advice.

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