The latest data point for Q4'25 shows a significant decline in operating profitability metrics for ONTO, with ROE at 0.50%, ROA at 0.44%, and ROIC at 0.35%, marking the lowest levels across all indicators in the observed period from Q1'23 to Q4'25. Over the timeframe from Q1'23 to Q4'25, both ROE and ROA exhibited an overall upward trend through Q1'25, peaking at 3.34% for ROE and 3.03% for ROA, driven by steady growth from a low base of around 1.5-1.6% in early 2023, before a sharp downturn in Q2'25 and beyond; ROIC followed a similar pattern, reaching a high of 2.90% in Q1'25 after starting at 1.58%. This volatility highlights improved efficiency in 2024, with all metrics rising progressively to over 2.5% by mid-year, but the abrupt drop post-Q1'25 suggests potential challenges in asset utilization or capital returns, warranting closer monitoring for underlying operational factors.