Riot Blockchain (NASDAQ:RIOT) stock gains 1.9% in after-hours trading after its bitcoin (BTC-USD) production in September increased more than four-fold. September 2021 production of 406 BTC rose from 91 BTC in September 2020. YTD through September 2021, Riot (RIOT) produced a total of 2,457 BTC, up 236% from the same period a year ago. As of Sept. 30, 2021, the company holds ~3,534 BTC, all of which were produced by its self-mining operations. Shipments of 2,000 S19J Pro Antminers were shipped in late September to Riot’s Whinstone facility and are expected to be deployed once received. By early November, Riot (RIOT) anticipates that it will have a total of 27,646 Antminers deployed, utilizing ~90 megawatts of energy, with an estimated hash rate capacity of 2.8 EH/s. Earlier, Crypto stocks climb in premarket as bitcoin breaks above $50K
