BlackRock Inc. is known the world over for its ETF suite, with funds spanning all manner of industries and themes going back nearly two decades. But one of its newest offerings is its most profitable.

The issuer’s Bitcoin ETF, which is nearing the $100 billion asset mark thanks to massive inflows and a new run-up in the token itself, generates more revenue than any other in the firm’s lineup of 1,000-plus globally, according to data from Eric Balchunas and James Seyffart at Bloomberg Intelligence.