Lam Research (LRCX) is a component of the WallStreet AI Index (WSAI) in the Semiconductors & Foundries segment, with an index weight of roughly 1.30%.
Why LRCX is in the index
Wafer-fab equipment — the picks-and-shovels for every leading-edge and HBM node.
Its role in the AI value chain
The silicon layer: AI accelerators, the foundries that fabricate them, memory (HBM/DRAM/NAND), storage, chip-design software (EDA), and the equipment that makes advanced nodes possible. This is where AI compute is physically created.
A full editorial deep-dive for LRCX is published on its scheduled day in the rotation. Meanwhile, see the live index dashboard for LRCX's current contribution.