BlackRock’s iShares Bitcoin Trust (IBIT), the flagship spot Bitcoin ETF launched in January 2024, has officially surpassed $100 billion in assets under management (AUM) as of October 14, 2025—making it the fastest-growing ETF in history to reach this threshold.
This feat was accomplished in just 435 trading days, shattering previous records like Vanguard’s S&P 500 ETF (VOO), which took over 2,000 days to hit the mark. For context, IBIT’s AUM ballooned from $51 billion at the end of 2024 to over $100 billion now, fueled by Bitcoin’s price rally above $125,000 and relentless institutional inflows totaling $65 billion into the fund alone.
This isn’t just growth—it’s dominance. IBIT now holds about 802,000 BTC roughly 3.8% of Bitcoin’s total supply, outpacing competitors like Fidelity’s FBTC ($26B AUM) and Grayscale’s GBTC ($22B AUM).
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The U.S. spot Bitcoin ETFs as a category have absorbed $63 billion in net inflows since inception, with BlackRock capturing over half. Analysts like Bloomberg’s Eric Balchunas highlight IBIT as BlackRock’s most profitable ETF, generating $245 million in fees over the past year—eclipsing decades-old funds like the iShares Russell 1000 Growth ETF $122B AUM, 25 years old.
The momentum shows no signs of slowing: Recent seven-day inflows hit $5.3 billion across Bitcoin ETFs, with IBIT alone adding $4 billion. If Bitcoin’s market cap reaches $3-5 trillion implying $150K-$250K per BTC, projections suggest IBIT could scale to $300B-$1T AUM while maintaining a 10% share.
BlackRock CEO Larry Fink celebrated the milestone on CNBC, calling IBIT “the fastest-growing ETF in the history of ETFs” and crediting it with mainstreaming Bitcoin as a “frictionless” portfolio diversifier akin to gold.
Larry Fink’s Bold Push: BlackRock’s In-House Tokenization System
Hot on the heels of IBIT’s triumph, Fink doubled down on BlackRock’s crypto ambitions during the Q3 earnings call on October 14, 2025, revealing the firm is actively developing its own proprietary tokenization technology.
Tokenization—converting real-world assets (RWAs) like stocks, bonds, real estate, and ETFs into blockchain-based digital tokens—has been a recurring theme in Fink’s rhetoric since 2023, but this marks a concrete shift to in-house innovation.
Fink envisions a future where “we need to be tokenizing all assets,” starting with financial products but extending to everything with intermediaries (e.g., property deeds, art).
He described it as “one of the most exciting potential markets for BlackRock,” targeting the $4.1 trillion in global digital wallets by “re-potting” traditional assets on-chain for seamless, 24/7 trading via digital wallets.
This builds on BlackRock’s existing tokenized money market fund (BUIDL), which hit $2.8B AUM on Ethereum since launching in 2024. BlackRock’s broader digital asset playbook is stacking up:Spot ETFs: IBIT ($100B+) and ETHA ($17B+), with $17.25B total across crypto products.
Partnerships with Securitize for BUIDL; talks with major platforms for wallet integration. Fink hinted at “exciting announcements” soon, potentially including tokenized ETFs to lure younger investors into traditional markets earlier.
The firm’s Q3 results underscore the bet paying off: Record $13.5T total AUM up 18% YoY and $6.51B revenue, with BLK stock up 1.2% post-earnings. Fink sees tokenization as the “next wave of opportunity” over the decade, potentially unlocking trillions in efficiency gains by slashing fees, boosting liquidity, and enabling fractional ownership.
On X, reactions range from bullish cheers “institutional adoption parabolic” to wary takes on control “digital ID incoming?”, but the consensus? This is TradFi’s full pivot to blockchain.In short, BlackRock isn’t dipping a toe—it’s diving headfirst, with IBIT as the launchpad and tokenization as the rocket fuel.
If Fink’s vision pans out, expect more RWAs flooding on-chain, deeper Bitcoin integration, and a seismic shift in how we own and trade everything from homes to hedges. Buckle up; the “next generation for markets” is here.
