Heraeus Holding GmbH — AI supply-chain exposure

Heraeus is a privately held German technology group whose semiconductor materials sit mostly in the back end of manufacturing: bonding wires that connect a die to its package, sputtering targets for deposition, quartz glass used in wafer processing, and the precious-metal chemistry that recurs across packaging.

Its hook is packaging capacity. As accelerators move to advanced packaging that stacks logic and memory together, the materials that bond and interconnect those die become a recurring consumable — qualified, specialised, and not easily swapped. Being private, Heraeus is harder to access directly, but structurally it is one of a small set of Western materials houses embedded in the packaging step. The model keeps it peripheral to the compute layer yet present in the assembly of nearly every finished chip.