Key Points:
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BlackRock’s iShares Bitcoin Trust (IBIT) nears $100 billion in assets under management.
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IBIT outpaces older funds, including the iShares Russell 1000 Growth ETF.
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The ETF earns more than $240 million in annual revenue for BlackRock.
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Bitcoin ETF inflows drive new highs in both price and market participation.
BlackRock’s most profitable ETF is reshaping expectations in the cryptocurrency market.
The iShares Bitcoin Trust (IBIT) has reached a level of profitability that few could match. With nearly $100 billion in assets under management, IBIT has quickly become the crown jewel in BlackRock’s ETF portfolio.
The ETF launched only 435 days ago, yet it now generates more revenue than funds that have existed for decades. According to Bloomberg’s Eric Balchunas, IBIT earns more for BlackRock than the iShares Russell 1000 Growth ETF, which has been active for 25 years and holds over $121 billion. The speed of this achievement underscores the growing power of Bitcoin ETF products in mainstream investing.
IBIT’s success highlights a sharp contrast with other major funds. While the iShares Core S&P 500 ETF manages over $700 billion in assets, its low fee structure limits profitability. IBIT charges 0.25%, creating a strong revenue stream for BlackRock. That translates to roughly $244 million a year, making it the company’s most profitable ETF by a wide margin.
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Bitcoin ETF dominates revenue charts at BlackRock
The driving force behind IBIT’s rise is investor enthusiasm for regulated Bitcoin exposure. Institutional interest in cryptocurrency has surged, and BlackRock’s trusted reputation brought confidence to traditional investors. This mix of credibility and innovation has made IBIT the go-to choice for Bitcoin ETF exposure.
Bloomberg data shows IBIT is now only $2 billion away from reaching $100 billion in total assets under management. Once achieved, it will shatter the record for the fastest ETF to reach this milestone. The current record holder, the Vanguard S&P 500 ETF, took 2,011 days. IBIT is expected to reach it in less than 500 days, or roughly one-fifth the time.
IBIT’s momentum reflects the broader rise in Bitcoin ETF inflows. The fund, along with the iShares Ethereum Trust (ETHA), pulled in $10 billion in a single month, ranking among the top five ETFs for inflows across all sectors.
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Bitcoin ETF inflows reach historic levels
Bitcoin ETF inflows have fueled a new wave of optimism in cryptocurrency markets. Bloomberg analyst James Seyffart reported that Bitcoin ETFs attracted $3.3 billion in the week ending October 3, bringing total year-to-date inflows to $24 billion and lifetime flows to nearly $60 billion. These numbers reveal how quickly investors are embracing Bitcoin as a legitimate asset class.
Bitcoin itself has benefited from this rush of capital. The cryptocurrency hit an all-time high of $125,500 on October 6, reflecting strong investor confidence. ETF inflows are often seen as a proxy for broader institutional interest, and IBIT’s performance shows that Bitcoin is no longer viewed as a speculative asset, but a strategic one.
As I see it, BlackRock’s most profitable ETF is also redefining how traditional finance interacts with digital assets. The combination of accessibility, regulation, and liquidity has opened a new era of institutional-grade crypto exposure.
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BlackRock turns Bitcoin into mainstream finance
BlackRock’s move into cryptocurrency has changed the perception of digital assets among traditional investors. By creating a bridge between Bitcoin and mainstream finance, the company positioned itself as a leader in the next phase of market innovation. The firm’s success shows that investor demand for alternative assets continues to grow, especially when paired with trusted management and transparent regulation.
The data tells a clear story. Bitcoin ETF assets grew from $12 billion in March 2024 to more than $59 billion by October 2025. IBIT led the charge, setting the pace for other funds. The rise of IBIT also shows that profitability is not only about total assets under management but about fee strategy and market timing.
IBIT’s success could reshape how financial institutions approach crypto-linked products. With ETF inflows still accelerating, BlackRock’s most profitable ETF is on track to become one of the most influential investment vehicles of the decade.