Bitcoin miner Riot Blockchain (NASDAQ:RIOT) shares are sliding nearly 3% in afterhours trading, Wednesday, despite a "record financial year for the company," said CEO Jason Lee. The miner posted a $7.9M net loss in 2021, compared with a loss of $12.7M in 2020, driven by non-cash stock-based compensation expense of $68.5M and a non-cash, unrealized loss of $36.5M on impairment of digital assets, according to its earnings report. 2021 revenue of $213.24M topped the $211.06M consensus and surged from $12.1M in 2020. 2021 mining revenue of $184.4M vs. $12.0M in 2020. Its hash capacity of 3.1 exahash per second in 2021 jumped 444% over the same period a year ago. The company increased the amount of bitcoin held on its balance sheet to 4,884 BTC from 1,078 BTC in 2020. 2021 adjusted EBITDA of $82.42M soared from a loss of $6.32M in the year-ago period. As part of its corporate initiatives for this
