In the most recent quarter, Q1'26, Fortinet's (FTNT) ROE stands at 0.54%, ROA at 0.05%, and ROIC at 0.09%, reflecting a modest recovery in ROE from the prior quarter's 0.41% while ROA shows slight improvement from 0.05% in Q4'25, and ROIC experiences a notable decline to its lowest point in the period. Over the timeframe from Q2'23 to Q1'26, ROE exhibits high volatility with sharp fluctuations, peaking at 4.36% in Q3'23 before dropping to -2.18% in Q1'24 and stabilizing around 0.2-0.6% in recent quarters, indicating inconsistent equity efficiency. ROA maintains relative stability, ranging between 0.04% and 0.06% with a gradual upward trend post-Q1'24, suggesting steady asset utilization. ROIC shows a clear downward trajectory from a high of 0.60% in Q4'23 to 0.09% in Q1'26, highlighting diminishing returns on invested capital amid potential operational pressures.