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Not another list of stocks by industry. Pick an industry and discover the real dependency graph behind it — who supplies whom, where a single supplier has no alternative, and which company is most exposed. Every relationship is backed by a documented industry fact; none of it was generated by AI.
Jet engines, sole-source suppliers, and the market structure between Boeing, Airbus, and the engine makers.
🔬Who manufactures for whom, the lithography-equipment monopoly, and the real HBM memory suppliers behind AI chips.
🔋Who really supplies batteries to Tesla, GM, and Ford — and the one industry that deliberately avoided a single-source supplier.
🧲Why the Pentagon depends on China for the F-35's magnets, and how GM built a real American alternative.
📱Which of the iPhone's suppliers is truly critical to Apple, and where an alternative already exists.
💉Who really manufactured the COVID vaccines — and why, unlike semiconductors, this wasn't a single-supplier dependency.
In progress — every new industry needs real fact-checking before it goes live.
Every dependency link in these graphs is a documented industry fact — hand-built from real public disclosures (SEC filings, investor-relations statements, trade-press reporting), not generated or guessed by AI. Every program, supplier, and link is explicitly marked as "sole source" or "alternative available" based on what the facts actually show, not an estimate. For the full detail on how we select and verify sources, see our Editorial & Research Policy.