Japan Concentration Risk — What Country Screens Miss

Simple country-risk metrics say Japan is moderate. The cascade engine says Japan is critical.

9/20

of the most systemically critical supply-chain nodes are Japanese companies

Concentration risk hides in the upstream chemical layer.

Why traditional metrics miss Japan
What country-risk screens see
Japan removal: 3.4% fragmentation
41 demand nodes disconnected
Path survival: 96.5%
What the cascade engine sees
9 of top 20 systemic nodes removed
Irreplaceable chemistry-layer nodes lost
Qualification-gated — no fast substitution
Japan does not create the largest number of broken paths. It creates the highest-value broken paths.
Live Validation — April 2026

Middle East naphtha disruption exposed Japan's petrochemical dependency. Reuters reported that 97.3% of Japanese firms surveyed could not obtain naphtha-derived products normally. Japan's Ministry of Economy later confirmed emergency supply secured into 2027. The acute crisis may be managed — the structural concentration remains.

Reuters, April 15, 2026 · Japan Times / Argus, May 1, 2026

Volume 3 — Specialty Chemistry Supercycle  ·  ForcedAlpha  · forcedalpha.com
ForcedAlpha Cascade Engine — percolation analysis with geographic scenario removal. 3,260 nodes · 7,760 supply edges. DebtRank systemic ranking (Battiston et al. 2012). Reuters, Japan Times primary sourcing. Computed May 2, 2026.
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