The latest data point for ARM's Operation Income in Q4'26 shows a robust $440M USD, marking a significant quarterly increase from $185M in Q3'26 and reflecting strong year-end performance. Over the period from Q1'24 to Q4'26, Operation Income exhibits volatility with an initial decline to -$156M in Q2'24, followed by a recovery and overall upward trend, peaking at $440M in Q4'26; year-over-year growth turns positive from Q4'24 onward, with a standout 17.64% surge in Q4'25, though it moderates to 7.32% in Q4'26, indicating sustained but stabilizing profitability amid fluctuating quarterly results.