inTEST Corporation — AI supply-chain exposure

inTEST supplies the unglamorous hardware around semiconductor test — manipulators, docking systems and thermal chucks that hold a chip at a controlled temperature while it is probed and put through final test. Every accelerator and processor has to be tested before it ships, and inTEST's thermal-management and test-interface equipment is part of the rig that makes that possible. It sits in the back-end of the chain as a supplier of test and burn-in capacity.

Its structural hook is that testing scales with silicon: the more chips that are built, and the hotter and denser they run, the more thermal control and test interfaces are needed. Managing heat during test is a growing problem as AI parts push more power through smaller areas, which plays to inTEST's niche. The model keeps its weight modest because it is one specialised supplier among the test-equipment vendors, not a bottleneck in its own right — but it rides the same volume.