As of the latest data point for Q4'25 (2025-08-31), Costco's diluted EPS reached 5.87 USD, representing the highest value in the period shown. The year-over-year EPS growth for this quarter was 10.96%, indicating continued earnings expansion. From Q2'23 to Q4'25, the chart shows a generally upward trend in diluted EPS, with notable peaks in Q4 of each fiscal year. EPS growth rates have remained positive throughout most of the period, except for a slight decline in Q3'23. The data highlights seasonal strength in Q4 and consistent year-over-year improvement, suggesting robust financial performance over the covered timeframe.