PANews, March 27th - According to Zhitong Finance, Microsoft's US stock continued its downward trend at the opening today, marking its ninth consecutive day of decline and a drop of over 32% from its high. It is poised to record its worst quarterly performance since 2008, with AI eroding the company's growth prospects from two directions. Due to market concerns about investment in artificial intelligence infrastructure and competition from AI startups, Microsoft's stock price is heading towards its worst quarterly performance since the global financial crisis.