KLA (KLAC) Stock Dropped, What Is Behind The Latest Update?

KLA (KLAC) just paired a fresh earnings report with new guidance for the quarter ending December 31, 2026, giving investors updated revenue, margin, and earnings targets to recalibrate expectations.

The latest guidance arrives against a choppy backdrop for KLA, with the share price at US$157.91 after a 1-day move that declined 5.69%, a 7-day share price return of 8.45%, and a 30-day drop of 23.67% that has cooled near term momentum. This comes alongside a year-to-date share price return of 23.90% and a 5-year total shareholder return of 297.81%, which together highlight the longer term story.

Scan beyond KLA and see which peers are also riding the AI infrastructure build out with the hand picked 54 AI infrastructure stocks.

KLA just dropped guidance that points to hefty revenue and margins, yet the share price has retreated sharply in the last month. Is that a window to step in now, or a signal to wait for a cleaner entry as valuation comes into focus next?

Most Popular Narrative: 30% Undervalued

On the most followed view, KLA screens as undervalued, with a fair value estimate of about $225 versus the last close at $157.91. This puts the recent share price slide against a still-supportive long term story.

Rising AI infrastructure and high bandwidth memory investment is lifting wafer equipment demand, and KLA’s backlog of around US$12.5b with lead times that extend into 2027 and 2028 supports multi year visibility that can translate into higher revenue and earnings quality.

See why 118 investors see KLA as 30% undervalued.

Result: Fair Value of $225.08 (UNDERVALUED)

Still, the KLA narrative hinges on that US$12.5b backlog holding up and on China exposure not softening further under tariffs and export controls.

Find out about the key risks to this KLA narrative.

Another View: KLA Through The P/E Lens

A different lens on KLA leans on the P/E ratio instead of fair value models. The stock trades at 39.1x earnings, below the US Semiconductor average at 41.7x and close to its fair ratio of 40.2x. That mix of slight discount and peer level richness raises a real question: How much valuation risk are you comfortable taking for this kind of quality?

For a closer look at how that earnings multiple stacks up against peers and the fair ratio, See what the numbers say about this price — find out in our valuation breakdown.

Next Steps

Mixed on KLA so far, or leaning one way already? Either way, move quickly to check the underlying numbers, weigh the trade offs, and stress test your own thesis with the 3 key rewards and 1 important warning sign.

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