Bit Digital Inc (NASDAQ:BTBT) is one of the best stocks under $3 to invest in. On January 29, Bit Digital Inc. (NASDAQ:BTBT) announced it will discontinue its Bitcoin mining operations and focus instead on artificial intelligence (AI) computing and Ethereum infrastructure. The company now believes that Bitcoin mining “became a less efficient use of capital relative to opportunities that allow for active participation, yield generation, and operational leverage,” as opined by Bit Digital Inc. (NASDAQ:BTBT) ...