tl;dr

BlackRock’s iShares Bitcoin Trust ETF (IBIT) hit $100B in assets in 435 days, becoming the fastest ETF to reach this milestone and outperforming decades-old funds, while boosting Bitcoin’s price to $125K.

**BlackRock’s Bitcoin ETF Surpasses $100 Billion in Assets, Shattering Records and Reshaping the Market** BlackRock’s iShares Bitcoin Trust ETF (IBIT) has achieved a landmark milestone, surpassing $100 billion in assets under management (AUM) just 435 days after its launch. This rapid growth has positioned IBIT as BlackRock’s most profitable ETF, outperforming decades-old funds and redefining the landscape of exchange-traded funds (ETFs). **A New Era of Profitability** Bloomberg senior ETF analyst Eric Balchunas highlighted that IBIT now generates more revenue for BlackRock than several long-standing funds. At one year old, IBIT’s annual revenue of approximately $244.5 million dwarfs that of the iShares Russell 1000 Growth ETF, a 25-year-old fund with $121.8 billion in assets. Similarly, the iShares MSCI EAFE ETF ($68.4 billion) and the iShares Core S&P 500 ETF ($701 billion) also lag behind IBIT in profitability. The fund’s success stems from its 0.25% fee structure, which, while modest, generates significant revenue given its massive AUM. This contrasts sharply with BlackRock’s zero-fee Core S&P 500 ETF, underscoring the premium investors are willing to pay for exposure to Bitcoin. **Breaking Records at Lightning Speed** IBIT is on track to become the fastest ETF to reach $100 billion in assets, with analysts noting it is just $2 billion away from the milestone. If achieved, it will shatter the previous record held by the Vanguard S&P 500 ETF, which took 2,011 days to reach the same threshold. IBIT’s journey is a fraction of that time, reflecting the unprecedented demand for Bitcoin investment vehicles. **Bitcoin’s Price Soars Amid ETF Momentum** The ETF’s success has coincided with a surge in Bitcoin’s price, which briefly crossed $125,500 on October 6. Bloomberg ETF analyst James Seyffart noted that Bitcoin ETFs collectively saw $3.3 billion in inflows during the week ending October 3, pushing year-to-date inflows to $24 billion and lifetime flows to approximately $60 billion—a new high for the category since its launch in January 2024. IBIT and BlackRock’s iShares Ethereum Trust ETF (ETHA) also dominated monthly inflows, drawing $10 billion in combined assets as of October 5. This marks the third and fourth highest monthly inflows for any ETF, signaling growing institutional confidence in digital assets. **A Trend of Accelerating Growth** The cumulative flow chart for Bitcoin ETFs reveals a striking trajectory: from $12 billion in March 2024 to $40.25 billion in February 2025, and a leap to $59.54 billion by October 2025. This exponential growth underscores the transformative impact of ETFs on the cryptocurrency market, bridging traditional finance with digital assets. As IBIT continues to break records, its success not only highlights the demand for Bitcoin but also signals a broader shift in how investors view and allocate capital to emerging asset classes. BlackRock’s leadership in this space positions it as a key player in shaping the future of finance.

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 15 Oct 25
 15 Oct 25
 15 Oct 25