The AI Stack: Why Where a Stock Sits Matters More Than Whether It Says "AI"

Eleven layers of the AI supply chain, 104 listed names, and one pattern that keeps repeating: the companies with capacity already contracted into 2027 and 2028 are consistently not the ones getting the loudest coverage — and several of the loudest have no revenue at all.

Index post for an 11-part series. September 2026. Two companies both describe themselves as AI plays. One has a $163 billion order backlog stretching years into the future. The other has no revenue and a story about what happens in 2030. Both go up when the AI narrative is hot. Only one of them is still standing when it isn't. That difference has almost nothing to do with how m…