According to @StockMKTNewz, Bitcoin mining machine manufacturer Canaan Inc. (CAN) is winding down its artificial intelligence (AI) chip business to refocus on its core crypto operations. The AI unit, which generated minimal revenue ($900,000) but accounted for 15% of operating expenses, was deemed strategically misaligned. This move comes as Canaan's stock has fallen 71% year-to-date. In contrast, a JPMorgan report highlights that Q1 2025 was one of the best quarters on record for U.S.-listed Bitcoin miners, who collectively earned about $2.0 billion in gross profit. The report noted that IREN (IREN) achieved the highest gross profit and the lowest all-in cash cost per coin at approximately $36,400, while Marathon Digital (MARA) mined the most bitcoin but had the highest cost per coin at around $72,600. JPMorgan maintains an overweight rating on CleanSpark (CLSK), IREN, and Riot Platforms (RIOT), with a neutral rating on Cipher Mining (CIFR) and MARA.