BlackRock’s iShares Bitcoin Trust (IBIT) has officially joined the ranks of the top 20 ETFs by assets under management (AUMs). The ETF reached roughly $90.7 billion, according to Bloomberg analyst Eric Balchunas. The milestone comes as IBIT logged a $405.5 million inflow in a single session, its largest since August 14.
The strong inflows have propelled U.S. spot Bitcoin ETFs to their heftiest net daily inflow since September 10 at $675.8 million. Balchunas noted the pace at which IBIT is growing has been spectacular; the ETF has grown by approximately 175% since its inception. He added that cracking the top 10 may not be far off, though competitive growth among legacy ETFs could push that scenario into late 2026.
Positioning IBIT among giants
A quick look at the table posted by Balchunas shows the Bloomberg “top 20 by AUM” roster, in which IBIT is now firmly battling alongside legacy ETF heavyweights. According to ETFDB’s rankings, the largest ETFs include funds like SPDR S&P 500 (SPY), iShares Core S&P 500 (IVV), Vanguard Total Stock Market (VTI), Invesco QQQ (QQQ), Vanguard S&P 500 (VOO), major bond and international equity ETFs, plus commodity and factor strategies.
Snapshot of IBIT fund
As of October 1, 2025, IBIT’s net assets stand at $90,461,988,453. the fund listed $87.63 billion in assets and ~1,353,360,000 shares outstanding. Its 30-day average trading volume stands at ~41.15 million shares, with daily volume at ~38.10 million.
IBIT was launched on January 5, 2024. It operates by tracking the CME CF Bitcoin Reference Rate, New York Variant as its benchmark. The fund carries a 0.25% management fee or expense ratio, as its called. From inception, IBIT has been the most traded Bitcoin ETP, giving investors potentially lower transaction costs.
IBIT also broke speed records: it crossed $70 billion in AUM in just 341 trading days, making it the fastest ETF ever to hit that milestone.
IBIT’s entrance into the ETF top 20 is a landmark moment. It shows that a digital-asset ETF can quickly scale to compete with decades-old equity, bond, and commodity funds. Given its current trajectory, many analysts expect IBIT to cross $100 billion in assets soon. This could pave the way to compete for top-10 status among ETFs soon.