As of the most recent data point for Q2'26 (2025-12-31), KLAC's PEG Ratio (5yr expected) stands at 13.49, representing a significant increase from the previous quarter's value of -4.81. This sharp rise highlights a notable shift in the company's valuation relative to its expected earnings growth. Over the period from Q3'23 to Q2'26, the PEG Ratio has exhibited considerable volatility, with values fluctuating between negative and positive territory. The chart reveals several pronounced swings, including a steep drop to -20.44 in Q4'23, followed by a rapid recovery to 2.45 in Q1'24 and a peak of 10.72 in Q3'24. After another period of instability, the ratio surges to its highest point in Q2'26, suggesting ongoing uncertainty in growth expectations and valuation metrics for KLAC during this timeframe.