As of Q4'25 (2026-01-03), ONTO reported an EPS Surprise % of -83.40%, indicating a significant miss relative to analyst expectations. The most recent EPS Growth (YoY) for the same period was -78.79%, reflecting a sharp year-over-year decline in earnings performance. Over the period from Q1'23 to Q4'25, the EPS Surprise % for ONTO has shown considerable volatility, with several quarters of positive surprises—peaking at 10% in Q2'24—followed by a dramatic drop to -83.40% in Q4'25. Similarly, EPS Growth (YoY) remained negative throughout 2023 before rebounding strongly in 2024, reaching over 100% in Q2'24, but then reversing into steep declines in the latter half of 2025. This pattern highlights a period of recovery in 2024, followed by a pronounced downturn in late 2025.