Ethereum treasury company Bit Digital (NASDAQ: BTBT) announced plans to completely cease its Bitcoin mining operations and instead focus on Ethereum infrastructure, staking, and high-performance computing (HPC/AI) strategies. In a letter to shareholders, CEO Sam Tabar stated that with market changes, mining is no longer the most capital-efficient option. The company will concentrate its digital asset exposure on Ethereum and strengthen its AI infrastructure footprint through a controlling stake in WhiteFiber, aiming for sustainable, monetizable, and compounded long-term growth. Bit Digital entered the Bitcoin mining field in 2020 and began accumulating and staking ETH around the time Ethereum transitioned to PoS in 2022. Starting in 2023, the company pioneered its HPC/AI strategy and by mid-2025 clearly transitioned to a "pure Ethereum treasury and staking" model, gradually selling mining rigs, terminating hosting contracts, and phasing out older equipment. Its AI subsidiary, WhiteFiber, completed its IPO last year, and Bit Digital currently holds approximately 27 million shares.