Why Microsoft Stock Tumbled 3.7% Today

Microsoft (MSFT -3.67%) had one of its more forgettable sessions on the stock market Wednesday, with its share price melting by 3.7% at closing time. Yet this had less to do with its own operations, and more to do with a move by a business in which it's invested. That decline was steeper than even the gloomy S&P 500 index's 2.2% fall on the day.The big buzz in the AI worldIn an article published this morning and citing an unnamed "person familiar with the matter," Bloomberg wrote that leading artificial int ...