Caterpillar Inc. — AI supply-chain exposure

Caterpillar is best known for construction and mining machines, but the piece that matters here is its Energy & Transportation segment, which builds diesel and gas generator sets and turbines. Those gensets are the standard backup — and, increasingly, prime — power source that keeps a data center running when the grid can't.

Every hyperscale site needs redundant on-site generation, and as interconnection queues stretch, some operators run engines or turbines as primary power while they wait for grid capacity. That makes an old-line equipment maker an unexpected beneficiary of the compute build. Caterpillar's moat is its dealer and service network and its huge installed base, which lock in decades of parts and maintenance. The model places it as a supplier to the backup-generation layer — exposed to the pace of data center construction rather than to the chips inside.