The latest data point for COST’s EV/Sales ratio is -0.21 as of Q2'26, indicating a sharp and unusual decline from the previous quarter’s value of 5.57. This negative value is highly atypical for this metric and suggests a significant change in either enterprise value or sales during the most recent period. Over the period from Q3'23 to Q2'26, the EV/Sales ratio exhibited considerable volatility, with values ranging from a low of 3.11 in Q4'23 to a peak of 7.00 in Q3'25. The trend shows several sharp rises and falls, including notable increases in Q1'24 and Q3'25, followed by abrupt declines, particularly the dramatic drop into negative territory in the latest quarter. This pattern indicates instability in COST’s valuation relative to its sales, with the most recent quarter representing a significant outlier.