In just a month, the bitcoin funds ex-GBTC have accumulated over $11 billion worth of bitcoin, with three of the ETFs – BlackRock’s IBIT, Fidelity’s FBTC and Ark 21’s ARKB – topping the $1 billion mark in assets under management. In fact, as of the end of Monday, IBIT was nearing $5 billion in AUM and FBTC was just shy of $4 billion.