BlackRock's IBIT Bitcoin ETF logs $665 million inflow, its largest since October 2025

BlackRock bitcoin ETF pulls in $665 million in a day

BlackRock's iShares Bitcoin Trust (IBIT), a spot bitcoin ETF, drew $665.16 million in net inflows on Monday, according to data from SoSoValue. That was its largest single-day inflow since Oct. 7, 2025, and its biggest in the past year.

IBIT is the largest spot bitcoin ETF, with $66.37 billion in net assets. It was launched in January 2024 by BlackRock, described as the world's largest asset manager. An ETF, or exchange-traded fund, is a fund whose shares trade on a stock exchange.

The inflow came while bitcoin stayed in a narrow range between about $82,000 and $83,000, as concerns about further interest-rate hikes weighed on riskier assets more broadly.

Key numbers from the ETF flows

• IBIT: $665.16 million in net inflows on Monday.
• All U.S. spot bitcoin ETFs: $526.6 million in net inflows the same day.
• Spot ether ETFs: $103.3 million in net outflows on Monday, a fourth straight day of outflows.

Outflows from Fidelity's and Grayscale's bitcoin funds partly offset IBIT's gain, which is why the total U.S. spot bitcoin ETF figure was lower than IBIT's alone.

What analysts say about the demand

Dominick John, an analyst at Zeus Research, told The Block that the inflow shows "resilient institutional demand despite macro headwinds and bitcoin's choppy price action." He added that persistent resistance suggests ETF buying is being absorbed by selling pressure, while rate-hike fears weigh on broader risk appetite.

Min Jung, an associate researcher at Presto Research, said the exact driver behind the inflows is unclear. She noted investors could be positioning for a potential "catch-up trade" in bitcoin, saying that unlike other risk assets trading near all-time highs, bitcoin has stayed largely range-bound because of a lack of crypto-specific catalysts, which makes current levels relatively attractive.

Jung also said volatility is likely to continue, since uncertainty around the Federal Reserve's rate decision is damping risk sentiment. In her view, a sustained breakout above the current range would need macro clarity and improved risk appetite. The Block's crypto Fear & Greed Index stood at 59, in the "greed" zone.

BlackRock also files for a new bitcoin fund

Separately, BlackRock filed for another bitcoin fund on Monday. The proposed iShares Bitcoin Managed Protect ETF would offer investors both downside protection and upside exposure to its flagship bitcoin ETF. This is a filing, not an approved product.

What is confirmed

The daily flow figures come from SoSoValue data. IBIT's inflow of $665.16 million on Monday, the $526.6 million total for U.S. spot bitcoin ETFs, and the $103.3 million of ether ETF outflows are reported figures. IBIT's $66.37 billion in net assets, its January 2024 launch, and the Monday filing for the iShares Bitcoin Managed Protect ETF are stated as facts in the source material.

What is still unclear

The source material does not identify what caused the IBIT inflows. Presto Research's Min Jung said the exact driver is unclear, and her "catch-up trade" explanation is described as a possibility rather than a confirmed reason. The outlook for a price breakout and the effects of the Federal Reserve's rate decision are analysts' views, not confirmed outcomes.

Why it matters

The figures show how money moved in and out of U.S. crypto ETFs on one day, and highlight a split in demand between bitcoin and ether products. The analysts cited treat the IBIT inflow as a sign of institutional interest in bitcoin even as prices trade in a tight range and macro concerns persist.

Sources

• The Block

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