LRCX vs KLAC — which stock performed better?

Lam Research Corporation (LRCX) versus KLA Corporation (KLAC), Information Technology, on 2026-09-24.

Result

Lam Research Corporation (LRCX) performed better on 2026-09-24. LRCX moved -1.080%, KLAC moved -6.180%.

Why these two companies

Both leading chip-equipment makers extended a sector-wide AI capex rally into the close on Tuesday, September 22, 2026, with Lam Research jumping 4.9% and KLA adding 2.36% as Wall Street lifted wafer-fabrication-equipment spending forecasts. The two stocks have diverged sharply this year -- Lam has ridden memory-driven demand harder than KLA -- setting up a live debate about which name benefits most as spending mixes shift.

The research

Lam Research makes machines that build the tiny layers inside computer chips, while KLA makes machines that inspect those chips for defects. Both companies sell to the same chip factories around the world, so they tend to rise and fall together when spending on new chip factories speeds up or slows down.

One reason to like Lam Research is that it has had the bigger recent price moves, including a strong gain in its most recent trading session, and it has benefited heavily from memory-chip spending this year. One reason to like KLA is that some analysts think it is due for a catch-up move if chip factories shift more of their spending toward the kind of manufacturing KLA specializes in.

Something to keep in mind with both companies: their stock prices move a lot based on how much big tech companies and chip factories plan to spend on new equipment. If that spending slows down, or if trade rules with China change, both stocks could react quickly in either direction.