MSFT is trading 2.3% down at $357.24, influenced by broader tech/AI valuation skepticism and significant company-specific developments. - EU antitrust regulators are moving to designate Microsoft's cloud computing services as "gatekeepers," potentially imposing strict obligations to curb market power. - A class action lawsuit for securities fraud was filed against Microsoft today, related to alleged functionality issues with Copilot and misleading investor statements. - The stock has also dropped sharply over the last week amid general market sentiment and concerns over high AI-driven valuations, diverging from positive AI sentiment sparked by Micron's recent earnings.