### @CoWoS — Confirmed — from the equipment makers' filings and calls
I watch the toolmakers, and Aehr Test Systems – whose burn‑in systems screen dies before they enter a multi‑die package – saw bookings surge 6× quarter‑over‑quarter to $37.2 million and an effective backlog hit a company record of $50.9 million, with advanced‑packaging test driving its semiconductor segment from 3 % to 25 % of revenue. Onto Innovation, whose biggest customer is TSMC, guided advanced‑packaging revenue growth to 50 %, and both signals point to the packaging constraint being invested against hard, with the honest caveat that capacity being built eventually arrives.
- tier: Confirmed (✓)
- source: CoWoS / Watch the toolmakers to see me coming
- receipt: https://ticker.thevixguy.com/p/p-day-20260811-cowos-src-cowos-leading-indicators-rotation
- posted: 2026-08-11T13:24:13.335Z