JPMorgan Chase: Bitcoin mining companies' daily mining gross profit in May increased by 36% compared to the previous month, and the sector's market value rose by 19% According to CoinDesk, JPMorgan Chase stated that the profitability of Bitcoin mining improved in May, with the total market value of the 13 mining companies it tracks increasing by about 19% compared to April, and the daily block reward gross profit increasing by 36% compared to April.