BlackRock’s Bitcoin ETF IBIT Hits $70 Billion AUM in 341 Days

BlackRock’s iShares Bitcoin ETF (IBIT) has achieved a remarkable milestone, reaching $70 billion in assets under management (AUM) in just 341 days. This rapid growth has positioned IBIT as the largest Bitcoin ETF globally, surpassing the previously dominant iShares Core S&P 500 ETF (IVV). IBIT now earns $186 million a year in fees, slightly ahead of IVV, which makes $183 million.

IBIT’s success is attributed to its robust institutional demand, with daily inflows reaching significant levels. The ETF charges a 0.25% fee, while 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 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. This rapid ascent underscores the shifting landscape of institutional investment in digital assets. The ETF's performance not only reflects the increasing acceptance of Bitcoin as a legitimate investment asset but also the effectiveness of BlackRock's strategy in attracting institutional capital.

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.

The achievement of IBIT also raises questions about the future of Bitcoin ETFs and their role in the broader financial ecosystem. As more institutional investors enter the market, the demand for regulated and transparent investment products like IBIT is expected to rise. This trend could lead to increased competition among ETF providers, potentially resulting in more innovative and diverse investment options for investors.

The rapid growth of IBIT also highlights the potential for Bitcoin to become a mainstream investment asset. The ETF's success in attracting institutional capital suggests that Bitcoin is no longer seen as a speculative asset but as a viable component of a diversified investment portfolio. This shift in perception could have significant implications for the future of the cryptocurrency market, as it may attract more traditional investors who have been hesitant to enter the space due to regulatory and security concerns.

In conclusion, BlackRock's IBIT reaching $70 billion in AUM in record time and surpassing IVV is a significant development in the cryptocurrency market. The ETF's success underscores the growing institutional demand for Bitcoin and the potential for digital assets to become a mainstream investment option. As the market continues to evolve, it will be interesting to see how other financial institutions respond to this trend and what new opportunities it may create for investors.