KLA and Lam Beat Nvidia on Sept 4. Is AI Rally Broadening?

The September 4 trading session saw KLA and Lam Research, two companies that sell the tools required to make advanced chips, outperform Nvidia. This event raises the question of whether investor enthusiasm for AI is broadening beyond the most prominent AI winner to the companies that enable its production. KLA and Lam do not sell the accelerators that power AI; instead, they provide process-control and fabrication equipment essential for making more advanced logic, memory, and packaging. Their stock gains suggest a possible shift in market focus, but the body notes that no specific company catalyst was confirmed, so the move could be a single session's rotation rather than a sustained trend.

Hedge-fund interest in both companies has increased, according to Insider Monkey data, with KLA rising to 81 funds at June 30 from 71 at March 31, and Lam to 139 funds in Q2 from 123 in Q1. However, the largest holder shown for each, Arrowstreet Capital, reduced its stake: KLA's position was roughly 40% below its Q1 level, and Lam's was about 7% fewer. These snapshots predate the rally, so they do not reflect reactions to it. The companies' financial results show strength: KLA's fiscal Q4 revenue reached $3.66 billion, and Lam posted $6.72 billion in June-quarter revenue with a 51.7% gross margin. Management at both firms ties performance to AI-driven demand for advanced packaging and denser memory.

The fundamental question is whether this broadening has operating depth beyond a single optimistic day. Order growth across leading-edge logic, memory, and packaging will be the key indicator. Both companies benefit when customers add process steps, but they are not immune to cyclicality or a slowdown in AI deployment that could halt new fab and packaging lines. Investors might do well to separate recurring service revenue from new-system demand, as the installed base can cushion a downturn but cannot fully replace a capital spending cycle. The rally expands the market's attention, yet it does not abolish semiconductor cyclicality. The trajectory of capital spending by chipmakers will determine if these gains hold.