As of Q4'25 (2026-01-03), ONTO reported a revenue surprise of -0.17% and a year-over-year revenue growth of 1.11%. This latest data point reflects a slight negative deviation from analyst expectations, while still achieving modest positive growth compared to the same quarter last year. From Q1'23 to Q4'25, ONTO's revenue surprise percentage has fluctuated, with notable positive surprises in Q2'25 (14.47%) and Q4'23 (4.69%), but generally hovering close to zero, indicating mixed performance relative to expectations. The year-over-year revenue growth trend shows a significant turnaround: after four consecutive quarters of negative growth through Q4'23, ONTO experienced strong positive growth peaking at 27.10% in Q2'24, followed by a gradual deceleration and a brief dip into negative territory in Q3'25 (-13.49%), before returning to slight growth in Q4'25. Overall, the data suggests a period of recovery and volatility, with recent quarters showing stabilization in both revenue surprise and growth rates.