Why KLA Corporation (KLAC) Shares Are Sliding Today

What Happened?

Shares of semiconductor manufacturing equipment maker KLA Corporation (NASDAQ:KLAC) fell 2.8% in the afternoon session after a broad sell-off in the semiconductor sector and U.S. restrictions on chip equipment sales to China. 

The U.S. government revoked waivers for companies like Intel, Samsung, and SK Hynix to purchase American chip-making equipment for their facilities in China. This rule change, which now requires companies to apply for licenses, is expected to weigh on sales for U.S. equipment makers, including KLA. Adding to the pressure, the entire semiconductor sector pulled back following a disappointing sales forecast from chip designer Marvell Technology. Marvell's weak outlook stoked investor concerns about a potential cooling in the artificial intelligence (AI) chip market, creating negative sentiment across the industry and contributing to the decline in KLA's shares.

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What Is The Market Telling Us

KLA Corporation’s shares are somewhat volatile and have had 13 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful but not something that would fundamentally change its perception of the business.

The previous big move we wrote about was 29 days ago when the stock dropped 4.8% on the news that a series of divergent earnings reports highlighted a clear split in the semiconductor industry, with investors rewarding companies exposed to the AI boom while punishing those tied to slowing consumer electronics and manufacturing equipment markets. The market was clearly distinguishing between winners and losers during the earnings season. Companies with strong exposure to the artificial intelligence boom saw their stocks surge on optimistic forecasts. In contrast, firms exposed to the smartphone market, like Qualcomm and Skyworks Solutions, fell on signs of weakness in consumer electronics. The semiconductor equipment segment, including Lam Research and Applied Materials, also faced headwinds amid concerns of a potential slowdown, following cautious outlooks from industry leaders. This trend highlights a broader investor sentiment that is selective, favoring AI-centric growth stories over more traditional, cyclical parts of the chip market.

KLA Corporation is up 36.5% since the beginning of the year, and at $869.22 per share, it is trading close to its 52-week high of $955.41 from August 2025. Investors who bought $1,000 worth of KLA Corporation’s shares 5 years ago would now be looking at an investment worth $4,237.

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