The latest data point for ONTO's P/B Ratio in Q1'26 stands at 4.78, reflecting a moderate decline of approximately 10% from the previous quarter's peak of 5.30 in Q4'25, amid broader market volatility in the semiconductor sector. Over the period from Q2'23 to Q1'26, the P/B Ratio exhibited an initial upward trend, rising from 3.35 to a high of 5.77 in Q1'24, before entering a volatile phase with notable declines to a low of 2.31 in Q2'25 and subsequent recoveries, indicating fluctuating investor sentiment and valuation pressures; the overall pattern suggests a stabilization around the 3-5 range in recent quarters, with no sustained growth beyond early 2024 levels.