Hidden Taiwan Concentration in a Tech Portfolio
Apple, Nvidia, Intel, and AMD look diversified — until you map their supply chains
The Setup
Consider a portfolio with the following stocks in it:
Key Insight
All four of these stocks depend on the same TSMC facilities in Taiwan. A major earthquake there doesn't hit one holding — it hits all four at once, with an expected annual disruption of 6.2 days per facility.
What Kindino Found
Summary
Apple, Nvidia, Intel, and AMD appear diversified — different companies, different products, different market caps. But Kindino analysis reveals all four depend on TSMC's fabs in Hsinchu and Tainan. A single earthquake in southwest Taiwan could simultaneously disrupt chip supply to all four holdings.
Top Shared Suppliers
| Supplier | Location | Affected Holdings | Top Hazard | Expected Disruption | Interaction Risk |
|---|---|---|---|---|---|
| TSMC | Hsinchu, Taiwan | AAPLNVDAINTCAMD | earthquake9.2/10 | 6.2 days/yr | 35.0 |
| Samsung Semiconductor | Hwaseong, South Korea | AAPLNVDA | flood6.8/10 | 2.1 days/yr | 12.4 |
| SK Hynix | Icheon, South Korea | AAPLNVDAINTC | flood6.5/10 | 1.9 days/yr | 14.2 |
Risk Clusters
Taiwan Earthquake Cluster
Taiwan • earthquake
South Korea Flood Cluster
South Korea • flood
Methodology
Climate hazard scores derived from USGS earthquake catalog (50-year history, 250km radius), Open-Meteo CMIP6 projections (SSP2-4.5), and IBTrACS cyclone track data. Supply chain relationships from public SEC filings and known supplier disclosures. Expected Annual Disruption Days calculated using probability × duration model calibrated to historical disruption events.
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