According to PANews, HODL15Capital has monitored the trading volume data of Bitcoin spot ETFs on April 26. The data shows that BlackRock's IBIT had a trading volume of $734 million, Grayscale's GBTC had a trading volume of $380 million, Fidelity's FBTC had a trading volume of $309 million, ProShares' BITO had a trading volume of $212 million, ARKB had a trading volume of $55.42 million, and BITB had a trading volume of $41.70 million.

This data provides an insight into the trading activities of various Bitcoin spot ETFs. It shows the dominance of BlackRock's IBIT in the market, followed by Grayscale's GBTC and Fidelity's FBTC. ProShares' BITO, ARKB, and BITB also had significant trading volumes, although they were less than the top three.

The trading volume data is an important indicator of the market activity and investor interest in these Bitcoin spot ETFs. It can be used to gauge the popularity and liquidity of these investment products. The high trading volumes of these Bitcoin spot ETFs indicate a strong interest from investors and a vibrant market activity.