Tech Selloff Deepens as Korean Chipmakers Crater. Jamie Dimon Blindsides Succession Race. White Sox Obliterate Royals 22-1.

• Korean Chipmakers Crater 6% — AI Rally Fragility on Full DisplaySouth Korean stocks plummeted this week as semiconductor firms faced renewed selling pressure, reversing recent AI-fueled gains. The selloff signals growing skepticism about whether AI enthusiasm can sustain valuations at current levels. Nasdaq and S&P 500 are vulnerable to contagion since chipmakers represent 8-10% of major indices — this mirrors 2021's meme-stock euphoria collapse, where sentiment reversals triggered 20-30% corrections in speculative sectors within weeks.
• Magnificent Seven Diverges Hard — Microsoft Surges 5.7% While Nvidia Stumbles 1.6%Microsoft closed Friday at +5.7% for the week while Nvidia fell 1.6%, signaling investor rotation away from pure-play semiconductor bets toward software and AI services.
• Treasury Yields Drop 2.0% as Tech Weakness Fuels Safe-Haven DemandThe 10-year note closed Friday down 2.0% as investors rotated out of risk assets, typical flight-to-safety behavior when chipmaker weakness threatens the broader AI narrative.

Tech got exposed this week — the Nasdaq closed down 4.6% as Korean chipmakers tanked 6%, forcing a hard look at whether the AI rally was built on fundamentals or just momentum.

• Why it matters: The selloff started in Seoul, where chipmakers faced renewed selling pressure that reversed recent AI-fueled gains. Because semiconductors make up 8–10% of major U.S. indices, the pain spread fast across the Nasdaq and S&P 500.
• Watch for: The divergence between hardware and software tells the real story — Nvidia fell 1.6% and Broadcom dropped 3.7% while Microsoft surged 5.7%, suggesting money is rotating out of pure chip plays and into software that can actually show AI revenue today.
• What to bring up: Microsoft jumped 5.7% while Nvidia dropped 1.6% on the same week Korean chipmakers cratered 6% — that gap tells you the market is starting to separate the AI hype from the AI business.
• The GuyTalk Read: The Korean selloff exposed the central vulnerability of the AI trade: the entire rally has been built on semiconductor enthusiasm, not proven earnings. When the infrastructure layer falters, the whole thesis gets questioned. Microsoft's strength suggests some money believes the real play is cloud and software — companies that can already show AI revenue on the income statement. But the risk is that if chipmakers drop another 10%, even Microsoft gets dragged down because the AI infrastructure chain is interconnected. The historical parallel is uncomfortable: 2021 saw 20–30% corrections in speculative sectors within weeks once sentiment flipped. The cracks are showing, and this week's action in Seoul may be the first real signal that the AI rally needs to prove itself with earnings, not just expectations.
• What to Know:
  • QQQ closed the week down 4.6% as chipmaker weakness cascaded globally
  • Korean semiconductor stocks fell 6% this week, signaling contagion risk across the AI supply chain
  • Nvidia fell 1.6%, Broadcom fell 3.7%, while Microsoft rose 5.7% — a clear rotation out of silicon and into software
  • Chipmakers represent 8–10% of S&P 500 and Nasdaq weightings, amplifying any sector-level selloff into broad index pain
  • The 10-year Treasury yield fell 2.0% on the week as risk-off sentiment drove a flight to safety