Riot Platforms, one of the largest publicly traded Bitcoin miners, sold 4,300 BTC to fund operations and data center expansion. It currently holds 11,380 BTC, including 5,821 BTC pledged as collateral, worth about $666 million at Bitcoin’s June 30 price of $58,527. Riot mined 1,587 BTC in Q2 at an average cost of $49,912 per BTC, excluding depreciation, while Bitcoin mining revenue fell 19.3% year over year to $113.7 million.