CEO Social Media Posts Are No Substitute for Quarterly Disclosure

Meta Platforms Inc.’s Mark Zuckerberg broke three years of silence on X to announce the launch of a new AI model. Nvidia Corp.’s Jensen Huang signed up for the platform to share an open letter in support of an open artificial intelligence ecosystem. LVMH’s Bernard Arnault also got himself an account to post an open letter — in his case to rebut a Le Monde investigation into succession at the luxury empire.