Key Takeaways:
- BlackRock’s IBIT has become the fastest ETF to surpass $70 billion AUM, reaching the milestone in just 341 days.
- With 661,457 BTC, IBIT is now the largest institutional Bitcoin holder, overtaking Binance and MicroStrategy.
- IBIT has led all spot Bitcoin ETFs in inflows since its January 2024 launch, with $48.7 billion in net inflows.
BlackRock’s iShares Bitcoin Trust (IBIT) has become the fastest ETF in history to surpass $70 billion in assets under management (AUM), reaching the milestone in just 341 days – nearly five times faster than the previous record holder, SPDR Gold Shares (GLD).
As of publication, IBIT holds $71.9 billion in AUM and 661,457 Bitcoin, making BlackRock the largest institutional holder of Bitcoin.
$IBIT just blew through $70b and is now the fastest ETF to ever hit that mark in only 341 days, which is 5x faster than the old record held by GLD of 1,691 days. Nice chart from @JackiWang17 pic.twitter.com/5VeGT9twpQ
— Eric Balchunas (@EricBalchunas) June 9, 2025
This surpasses the holdings of Binance (629,190 BTC) and MicroStrategy (582,000 BTC).
However, the largest holder of Bitcoin remains its pseudonymous creator, Satoshi Nakamoto, whose addresses are estimated to hold around 1.1 million BTC.
ETF analyst Eric Balchunas predicts IBIT could surpass Nakamoto’s holdings by the end of next summer.
IBIT shares, listed on Nasdaq, recently rose 5.30% over five days, including a 4.24% jump on June 9 as Bitcoin climbed back above $110,000.
Since launching in the U.S. in January 2024, IBIT has led among the 10 spot Bitcoin ETFs, attracting $48.7 billion in net inflows.
It also saw a 31-day inflow streak, which ended on May 30 with a $430.8 million outflow – its largest to date.
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