Today's AI-related U.S. stock market updates: 1. South Korea goes all-in on AI! Investing $1.3 trillion over the next 10 years! Index, Samsung, SK Hynix drop 1-3%. 2. The law of the market: what goes up must come down! Storage and photonics stocks LITE, COHR, MRVL, MAmericaNDK plummet 4-8%. 3. SPCX and TSLA soar 7%! Immediate impact from index inclusion, plus Starlink to collaborate with Charter (CHTR) on mobile phones. 4. GOOGL jumps 5%! Replaces VZ in the Dow Jones Industrial Average, boosting tech sector weight. 5. MSTR surges 13%! Announces a digital credit capital framework! Key point: plans to sell over 20k BTC, worth $1.25 billion, to pay STRC dividends.