BlackRock’s IBIT Reaches $70 B AUM in Record Time, Tops IVV

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BlackRock’s iShares Bitcoin ETF (IBIT) is hitting major milestones this year. ETF expert Nate Geraci recently shared that IBIT has officially overtaken BlackRock’s biggest ETF. It now earns $186 million a year in fees, slightly ahead of the S&P 500 ETF (IVV), an ETF based on the S&P 500, which makes $183 million.

IBIT Breaks Records, Takes The Centre Stage

Impressively, IBIT pulled this off in just 18 months. With around $75 billion in Assets under management, it charges a 0.25% fee. IVV manages a massive $609 billion, but with a much lower 0.03% fee.

This shows that BlackRock’s Bitcoin ETF is now seeing more action than its flagship stock market ETF. IBIT also recently became the fastest ETF ever to hit $70 billion AUM , in just 341 days. It crushed the previous record set by SPDR Gold Shares, which took nearly 5 times longer. Eric Balchunas says IBIT could even surpass Satoshi in size by next summer.

IBIT has jumped from 47th to 4th place in U.S. ETF inflows for 2025. In just three months, it’s surged past big names like SPLG and is now catching up to giants like Vanguard’s VT and iShares SGOV.

IBIT’s Growth Slows as Volatility Drops

Despite IBIT’s lead in fee revenue, analyst Eric Balchunas pointed out that IBIT’s volatility has dropped to nearly the same level as IVV. Just a year ago, it was 5.7 times more volatile, which helped fuel its explosive growth. But it is now losing its edge as it is barely over 1.

As Bitcoin and its ETFs grow more stable, experts worry that massive ETF inflows are altering BTC’s natural market cycles.

On Friday, Bitcoin ETFs saw over $500 million in net inflows. Fidelity led the pack with $165 million, followed by BlackRock’s IBIT with $153 million. Ark Invest’s ARKB was close behind at $150.3 million.

Data from Farside shows that net weekly inflows into Bitcoin ETFs have topped $2.2 billion. Spot BTC ETFs have recorded 14 consecutive days of inflows, making this one of their strongest months since launch.

Nate Geraci also shared recently that we may be entering a “crypto ETF summer,” with the highest-ever odds of ETF approvals for altcoins like XRP and Solana.