BlackRock IBIT had a trading volume of $661 million on April 23, while Grayscale GBTC had a volume of $224 million.
On April 23, the trading volume of Bitcoin spot ETFs was as follows:
BlackRock IBIT: $661 million
Grayscale GBTC: $224 million
Fidelity FBTC: $233 million
ProShares BITO: $170 million
ARKB: $61.53 million
BITB: $60.51 million