The mixed hash rate of the 14 US-listed bitcoin mining stocks tracked by JPMorgan now accounts for a record 28.9 per cent of the network's hash rate. "The total hash rate of the 14 US-listed miners tracked has increased by about 70 per cent year-to-date (80 EH/s) to 194 EH/s, while the network hash rate has increased by 33 per cent and now accounts for a record 28.9 per cent of the global network's hash rate," wrote analysts Reginald Smith and Charles Pearce. The bank said that the figure has increased by nearly 8% since the bitcoin halving event earlier this year, reflecting the efficiency and funding advantages of some listed miners.