## KLAC PE Stream Chart Analysis As of the latest data point (mid-March 2026), KLAC's monthly average price stands at approximately **$1,482**, placing it right at the upper boundary of the **Warning** zone — precisely at the 42.9x PE boundary (priced at ~$1,482). This means the stock is trading at or just touching the highest PE multiple tracked in this chart, indicating a significantly elevated valuation. For reference, the 36.9x boundary sits at ~$1,275 and the 30.9x boundary at ~$1,068, both of which the current price has decisively surpassed. This positions KLAC firmly in **Warning** territory, suggesting the stock is trading at a historically high earnings multiple relative to its own valuation history, warranting caution for new investors considering entry at current levels. From a historical perspective, KLAC's valuation journey has been one of notable expansion punctuated by a mid-cycle correction. In early 2021, the stock traded in the **Fair-to-Watch** interval (roughly between 18.9x and 30.9x PE), with prices in the $275–$395 range. Through 2022, the stock remained largely in the **Fair** to **Watch** zone (between 18.9x and 24.9x), as the broader market correction kept prices suppressed relative to rising PE boundaries. A meaningful re-rating began in mid-2023, when prices climbed from the **Fair** zone into the **Watch** and **Overvalued** intervals, reaching the 24.9x–30.9x range by late 2023. The acceleration continued through 2024, with prices pushing into the **Overvalued** zone (30.9x–36.9x) by mid-2024, peaking near $810 in Q3 2024 before pulling back to the **Watch-to-Overvalued** boundary (~$640) by late 2024. The most dramatic re-rating occurred from early 2025 onward — driven by a sharp upward shift in the PE stream boundaries (reflecting strong earnings growth) — with prices surging from ~$695 in Q1 2025 to over $1,480 by mid-March 2026, ultimately breaching the **Warning** threshold of 42.9x. The consistent upward trend in the PE river lines themselves signals robust underlying earnings growth, yet the stock's price has now caught up to — and reached — the very top of the valuation band, making disciplined monitoring essential.