The iShares Bitcoin Trust (IBIT), a spot Bitcoin exchange-traded fund managed by BlackRock, has surpassed $70 billion in assets under management (AUM) within 341 trading days.
This marks the fastest ascent to that level of AUM for any ETF to date.
By comparison, the SPDR Gold Shares (GLD) ETF, the previous record-holder, took approximately 1,691 trading days to reach the same asset level.
Other notable ETFs, including Vanguard’s VOO (1,701 days), IEFA (1,773 days), and IEMG (2,063 days), also reached the $70 billion mark at a slower pace, according to Bloomberg ETF analyst Eric Balchunas.
$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
IBIT’s growth has coincided with a period of price appreciation in Bitcoin, which is currently trading above $108,000.
The ETF offers regulated exposure to Bitcoin through traditional brokerage platforms, which some analysts have cited as a factor contributing to investor interest.
According to data from blockchain analytics firm Arkham Intelligence, BlackRock is estimated to hold more than 663,000 Bitcoin.
This would place it ahead of Strategy, which reports holding approximately 582,000 Bitcoin.
The growth of IBIT reflects increased demand for financial products that provide access to Bitcoin through regulated channels.
The pace of asset accumulation also indicates strong interest from institutions and individual investors seeking to incorporate Bitcoin exposure within conventional investment vehicles.
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