What locked
Headlines and conventional gauges still looked calm while structure was already under stress. On the 2020–22 global chip shortage, the Index registered an early stress flag in February 2020 — nineteen months before the September 2021 auto-production trough (IPG3361T3S = 85.4), while automotive OEMs were still cancelling chip orders and declaring lean inventory a virtue.
_Sealed V5-locked backtest — semiconductor PPI + auto IP + inventory-to-sales Body, EPU Mind, chip-policy Identity. Same frozen physics as GFC and food crisis. Auto IP trough held out as outcome validator only._
What we will not claim
- No. We classify structural stress on corridors and nodes — not dated disruption forecasts. Cascade flags surface stress early.
Data in. Score out — no AI in the number.
Full sealed case
View chip shortage sealed case · V5-lock note · Supply Chain desk playbook.