BlackRock’s Bitcoin ETF Surpasses 800,000 BTC AUM After $4 Billion Inflows

BlackRock’s iShares Bitcoin Trust (IBIT) has achieved a major milestone, crossing 800,000 BTC in assets under management (AUM) after a record $4 billion inflow streak in recent weeks. The development firmly establishes the fund as the largest spot Bitcoin ETF globally, outpacing rivals from Fidelity and Ark Invest by a wide margin.

The surge in inflows reflects renewed institutional demand for Bitcoin, particularly as macroeconomic uncertainty and renewed rate-cut expectations fuel investor appetite for alternative stores of value.

BlackRock’s Bitcoin Holdings Reach New Heights

According to data compiled by BitMEX Research, BlackRock’s IBIT now holds approximately 804,236 BTC, representing 3.8% of Bitcoin’s circulating supply.

In just the past two weeks, IBIT attracted more than $4 billion in net inflows, pushing total fund assets above $91 billion at current market prices.

By comparison:

• Fidelity’s FBTC holds around 413,000 BTC (~$46 billion).
• Ark 21Shares ARKB holds 231,000 BTC (~$25 billion).

“This milestone marks a defining moment for digital assets in institutional finance,” said James Seyffart, ETF analyst at Bloomberg. “BlackRock’s continued accumulation reflects not just investor demand but the normalization of Bitcoin within traditional portfolio allocation.”

Institutional Rotation Back Into Bitcoin

The timing of the inflows coincides with renewed macro tailwinds and an uptick in institutional portfolio rebalancing toward hard assets.

Several large asset managers have disclosed new allocations to IBIT through 13F filings, including:

• Millennium Management, which doubled its position to $3.1 billion.
• Bridgewater Associates, which initiated a $650 million stake.
• Fisher Investments, which added $120 million in Q3.

The wave of new capital comes as Bitcoin trades near $114,000, having rebounded strongly from its recent correction below $110,000.

“Bitcoin’s behavior in this cycle is maturing,” said Matt Hougan, CIO at Bitwise. “Institutions are treating BTC as a long-term inflation hedge, not a speculative risk-on asset.”

IBIT’s Market Impact: A Liquidity Engine

Analysts note that IBIT’s growth has had measurable effects on Bitcoin’s liquidity, volatility, and price structure.

• Trading volumes: Average daily IBIT volume now exceeds $2.8 billion, rivaling the most active S&P 500 ETFs.
• Volatility compression: Spot market volatility has decreased by 22% since May, attributed to large ETF accumulation patterns.
• On-chain stability: Exchange reserves have dropped 9%, suggesting long-term custody growth.

According to CoinMetrics, ETFs now collectively hold more than 1.9 million BTC, with IBIT accounting for over 40% of the total.

BlackRock’s Expanding Crypto Ambitions

BlackRock CEO Larry Fink has doubled down on the company’s digital asset vision, emphasizing the role of tokenization and on-chain finance in reshaping capital markets.

In a recent CNBC interview, Fink said:

“Bitcoin is no longer a fringe instrument. It’s part of a global investment strategy. The flows we’re seeing reflect the broad institutionalization of crypto.”

IBIT’s success has also encouraged BlackRock to explore multi-asset crypto funds, including potential future products tied to Ethereum and tokenized Treasury bills.

Meanwhile, filings with the SEC suggest discussions are ongoing for global ETF listings, particularly in Europe and Asia, as international demand for Bitcoin exposure increases.

Bitcoin Price Outlook: Can IBIT Drive BTC to $120K?

With ETF inflows at historic levels, analysts believe Bitcoin could be on track to retest and potentially break above $120,000 in the near term.

“Institutional demand through ETFs has created a structural bid,” noted Rachael Lucas of BTC Markets. “As macro uncertainty persists and rates begin to fall, the probability of a breakout increases.”

Bitcoin’s $4.5 billion in total ETF inflows during the first week of October alone has helped offset broader market volatility, reinforcing bullish sentiment heading into Q4.

Final Thoughts

BlackRock’s Bitcoin ETF milestone is more than just a record — it’s a symbol of mainstream validation for digital assets.

Crossing 800,000 BTC in holdings demonstrates that institutional interest is not only sustained but accelerating, even amid fluctuating prices and macro headwinds.

With Q4 historically one of Bitcoin’s strongest periods, the market’s next leg up may well be fueled by the world’s largest asset manager — and its unprecedented appetite for BTC.