US Stocks Close: Dow Rises 500 Points, Philadelphia Semiconductor Index Falls Over 4%; Memory, Optical Communication Stocks Extend Losses, Software Stocks Rebound; Apple Hits $5 Trillion Market Cap, SanDisk Falls Below $1,100 Mark - TradingKey

The Dow Jones rose 1.03% on strong earnings, while the Philadelphia Semiconductor Index plummeted 4.49% as technical support faltered. Markets now await the Federal Reserve’s interest rate decision. Sector-specific developments include Apple’s planned expansion into the smart home market via a Siri-based hub, and Amazon’s strategic pivot toward "Frontier Model Research." Meanwhile, Visa announced a 7% workforce reduction, and reports suggest Koch is weighing a $15 billion sale of its data center arm. HSBC maintains an overweight equity stance, citing robust earnings and reasonable valuations as buffers against geopolitical risks and inflationary pressures.