BlackRock’s IBIT spot bitcoin exchange-traded fund reached $15 billion in total inflows yesterday — exactly three months after it began trading on Jan. 11.

“IBIT is up over 50% and has taken in $15 billion in new cash in three months; both of those numbers are double any other BlackRock ETF, and they have 421 of them,” Bloomberg ETF analyst Eric Balchunas said on Thursday. “That is about as hot as the iron gets.”

BlackRock’s IBIT dominated yesterday’s inflows for the U.S. spot bitcoin ETFs, adding $192.1 million to overpower $124.9 million in outflows from Grayscale’s higher-fee GBTC fund, according to CoinGlass data.

Bitwise’s BITB witnessed inflows of $11.1 million on Thursday, with Valkyrie’s BRRR and Fidelity’s FBTC bringing in $8.4 million and $4.6 million, respectively.

The …