<h1>Tech giant's $5B equity deal with chipmaker raises antitrust Section 7 and Rule 10b-5 disclosure, trade and market-stability risks</h1> Global equity markets were mixed after major central banks maintained or adjusted monetary policy and a high-profile technology collaboration prompted U.S. market records; a leading chipmaker agreed to a USD 5 billion equity purchase from a dominant tech firm to co-develop data-center and PC products. Legal issues include potential antitrust and securities-law review of the collaboration and investment, disclosure and insider-trading risks tied to rapid price moves, regulatory scrutiny of cross-border trade and tariffs ahead of a dialogue between U.S. and Chinese leaders, and market-stability concerns if central bank rate paths diverge.