Amazon Reports RecordBreaking Thanksgiving Holiday Week Sales Dropbox CEO Drew Houston Steps Down After 19 Years Transitions to Executive Chairman Reddit Shares Slide as Meta Launches Competing Forum App SpaceX Delays Starship Test Flight Sets Friday Retry as IPO Prospects Heat Up Tax Season 2025 New Rules for Online Sellers and EV Buyers Could Boost Refunds Stock Market Holiday Schedule 2026 Memorial Day Trading Hours and Closures