The latest data point for UPST's EV/Sales ratio in Q1'26 stands at 6.53, marking a significant decline from the previous quarter's 15.74 in Q4'25 and reflecting a broader contraction in valuation multiples amid potential market pressures or improved fundamentals. Over the period from Q2'23 to Q1'26, the EV/Sales ratio exhibited high volatility, starting at 24.83 and dipping to 18.24 in Q3'23 before rebounding to a peak of 47.95 in Q3'24, indicative of surging investor optimism during that phase. Subsequent quarters showed a downward trajectory from 37.85 in Q4'24, with notable drops to 20.26 in Q3'25 and further to the current low, suggesting a shift toward more conservative pricing relative to sales and possible sector headwinds, though the area chart highlights periods of stabilization around 21-28 in mid-2024 to early 2025.