Wall Street trading firm Jane Street and its subsidiaries have acquired a 6% stake in bitcoin mining giant Iris Energy. As of December 31, Jane Street Group held a total of 11,797,987 shares of Iris Energy, representing a 6% stake, according to a Form 13G filing on Friday. Iris Energymined 521 BTC in January with an actual hash rate of 28.93EH/s, representing 3.71% of the Bitcoin mining production market share.