KLA Corp Plunges 7% as Conservative Guidance Clashes With Premium Valuation

The Valuation Trap

KLA Corporation (KLAC) is the standout laggard in the technology sector this morning, with shares sliding 7.29% to $1,683.85. The move represents a dramatic 7.46% underperformance relative to the S&P 500, which is trading up a modest 0.18%. The sell-off comes despite the company reporting fiscal third-quarter results that topped Wall Street estimates on both the top and bottom lines late Wednesday.

For the quarter ended March 31, 2026, KLA reported revenue of $3.415 billion, surpassing the analyst consensus of $3.37 billion. Non-GAAP earnings per share came in at $9.40, beating the $9.15 estimate. However, in a market that has pushed semiconductor equipment stocks to record highs, a simple "beat and raise" was not enough to sustain momentum. Investors appear focused on the company's June quarter revenue guidance of $3.575 billion, which, while in line with consensus, failed to provide the "blowout" upside that many had priced in after the stock's nearly 50% year-to-date climb.

Guidance and Cash Flow Scrutiny

The primary headwind for the stock today is its valuation. Trading at a trailing price-to-earnings (P/E) ratio of approximately 52x—more than double its five-year median—KLA had become a victim of its own success. Analysts at RBC Capital noted that while the company remains a "through-cycle share gainer," the lack of immediate catalysts and lower exposure to the booming DRAM market compared to peers like Applied Materials or Lam Research made the stock vulnerable to profit-taking.

Further weighing on sentiment was a notable dip in free cash flow. KLA generated $622 million in free cash flow during the quarter, a sharp decline from the $990 million reported in the same period last year. While management attempted to offset the sting by authorizing a massive $7 billion share repurchase program and raising the quarterly dividend to $2.30 per share, the market's focus remained squarely on the slowing cash generation and supply chain constraints that management admitted are limiting near-term upside.

Sector Context and Analyst Views

Despite the intraday plunge, some analysts view the weakness as a long-term opportunity. Needham raised its price target to $2,000, suggesting that KLA is currently supply-constrained due to long product lead times and an under-forecasting of 2026 demand. Management expressed high confidence in a 2027 acceleration, pointing to the critical role of their process control tools in the AI ecosystem.

However, the immediate technical picture is bruised. With volume hitting 239.0K in the first hour of trading, the stock is seeing its heaviest selling pressure since its January earnings report. For now, the "picks and shovels" of the AI trade are facing a reality check as investors demand more than just steady growth to justify current price levels. KLA's leadership in inspection and metrology remains intact, but the market is signaling that the path to $2,000 will require more aggressive growth than the current fiscal year is providing.