Spot Bitcoin ETFs Recorded Biggest Daily Inflow Since October 2025

Key Takeaways

• U.S. spot Bitcoin ETFs attracted approximately $999 million in net inflows on September 21, their largest daily inflows since October 2025.
• BlackRock’s IBIT led the inflows, followed by ARKB.
• Bitcoin briefly topped $87,000 as ETF demand and short covering supported the rally.

U.S. spot Bitcoin exchange-traded funds (ETFs) attracted approximately $999 million in net inflows on September 21, 2026, their largest daily inflows since October 2025. Meanwhile, Bitcoin briefly surged above $87,000 amid renewed risk appetite.

The inflows were the largest since October 6, 2025, when the funds drew $1.2 billion.

— The Block (@TheBlockCo) Sep 22, 2026

BlackRock Leads Bitcoin ETF Inflows

BlackRock’s IBIT led inflows with $381.4 million, while ARK 21Shares’ ARKB brought in $289.1 million and Fidelity’s FBTC recorded $238.8 million, according to Farside data.

Across U.S. spot Bitcoin ETFs, cumulative net inflows reached $56.2 billion.

Funds from Grayscale, Bitwise, and Morgan Stanley also recorded inflows.

U.S. spot Ethereum ETFs recorded $270 million in net inflows on the same day, their largest single-day inflow since October 7, 2025.

Min Jung, a research associate of Presto Research, told The Block, “While there is no single clear catalyst, the move appears to reflect a combination of renewed risk appetite, strong spot ETF demand and some short covering after bitcoin broke above key technical levels.”

Bitcoin Rally Coincides with Broader Risk Appetite

Bitcoin reached around $87,300 on Monday before easing to $85,400 by 3 a.m. Eastern Time on Tuesday, September 22. The digital currency remained up 4.7% over 24 hours.

Bitcoin’s Monday high of around $87,300 was its highest price since January 2026, while Ether gained 2.5% over 24 hours to $2,730.

Dominick John, analyst at Zeus Research, said, “Bitcoin’s move above $85,000 signals a broader repricing of risk, underpinned by renewed institutional allocation, short-covering activity, and a more supportive macro backdrop.”

John argued that a sharp squeeze further accelerated momentum. CoinGlass data showed $1.06 billion in crypto liquidations over the preceding 24 hours, including $844 million in short positions.

The advance coincided with gains across U.S. technology stocks, with the Nasdaq Composite posting its first recorded close since June, MarketWatch reported.

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