Next Day Prep #304: Stealth Breakdown: When Breadth Cracks But the Label Holds – Tuesday 8/18/2026

Episode summary

The market’s regime label stayed Cautious, but 20-day breadth collapsed from 98% to 39% in a single session, exposing a split-personality tape where mega-caps held up while semis got crushed. Defensive names rotated in on real sponsorship while Fabrinet’s beat-and-drop revealed a punishing valuation reset across AI-infrastructure stocks, setting up a high-stakes day with a 20-year bond auction and retail earnings ahead.