Map Customer Facility Disasters to Supplier Capex and Cash Risk

Key findings

• A customer headquarters location is insufficient to assign a supplier exposure to an earthquake or flood.
• Infrastructure projects and recurring production inputs can react differently to damage at the same customer.
• Recovery spending can reverse an initial demand interruption, making supplier capex and cash responses useful outcomes beyond immediate returns.

A supplier outside a disaster zone can still lose orders when a customer's plant stops. It can also gain reconstruction work. Mapping company headquarters into a hazard zone does not distinguish either outcome.

The required join is affected facility → purchased product or project → supplier company. Altsets provides the commercial-company layer. Facility locations, damage and business-continuity evidence must come from records describing the actual operation.

One customer can send opposite signals through different inputs

SK ecoplant's published SK hynix edge carries an estimated 36.49% supplier revenue share. Its described semiconductor activities include infrastructure and materials. This makes it a useful example of the distinction, without asserting that a disaster has affected either company.

Under a hypothetical customer-facility outage, recurring materials purchases could fall with output. Infrastructure demand could be postponed, redirected or increased by reconstruction. The same company-level edge can contain both. Applying one negative hazard score to its full revenue share would erase the product split.

These are proposed mechanisms, not observed outcomes for the named edge.

Financial policy can reveal a longer-lived response

Research on customer earthquake exposure examines upstream supplier investment effects. It motivates studying more than the initial stock-price reaction. Suppliers can adjust investment, cash buffers and customer development after a disruption.

A test can compare product-matched suppliers to suppliers serving unaffected facilities of the same customer. That controls the customer identity more closely than a comparison with entirely unrelated firms. Pre-event customer revenue shares give the exposure scale; damage and restoration evidence determine which part of the edge is affected.

Observe supplier capex, working capital and relationship weights over later periods. A decline in supplier investment may reflect temporary uncertainty, cancelled customer projects or an effort to diversify. Those explanations need to be distinguished rather than automatically attributed to physical damage.

The recovery date is not known at the initial event

Historical tests should preserve the first damage report, each restoration update and later contract awards as separate information arrivals. Using the eventual outage length at the initial trading date would inject future knowledge.

Inherited physical risk is most informative as a facility-linked exposure with product coverage shown explicitly. This produces a narrower candidate universe and a clear account of which data would improve the model.

The payment-delay model sizes one possible liquidity channel. Altsets methodology defines the commercial estimates.

Sources

• Altsets supply chain dataset
• Upstream propagation of shocks in supply chains: Evidence from earthquakes
• Do cash holdings buffer against supply chain shocks?

Related research

• Estimate Supplier Cash Tied Up by Longer Customer Payment Terms

• Who Supplies Micron? Seven Major Suppliers Across Seven Countries

• The External Catalysts That Belong on a Stock's Calendar

• SK ecoplant’s SK hynix Exposure Is a Fab-Spending Question

Methodology

Read the methodology for this research.

Cite this research

Altsets Research. "Map Customer Facility Disasters to Supplier Capex and Cash Risk." Published September 18, 2026. https://www.altsets.com/research/customer-natural-disaster-supplier-investment

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