## ISRG PE Stream Chart Analysis As of the latest data point (mid-March 2026), ISRG's monthly average price stands at approximately **$477.73**, which places it in the **"Fair" valuation zone** — between the 65.1x PE boundary (priced at ~$520.83) and the 56.8x PE boundary (priced at ~$454.58). More precisely, the stock is trading above the 56.8x level but below the 65.1x threshold, suggesting a moderate valuation that is neither deeply discounted nor significantly stretched. Notably, the current price remains well below the upper "Warning" boundary of 89.9x (~$719.67) and the "Overvalued" boundary of 81.7x (~$653.42), indicating that despite a strong multi-year run, the stock has not reached extreme overvaluation territory by historical PE standards. From a historical perspective, ISRG's valuation has undergone meaningful expansion and contraction cycles over the observed period. In early 2021, the stock traded around $261, sitting comfortably between the 65.1x and 73.4x PE bands — a "Watch" zone — before climbing steadily through mid-2021 as earnings growth pushed PE band boundaries higher. The 2022 market correction dragged the price down sharply to the $200–$230 range, briefly pushing the stock into the "Value" interval (between 48.5x and 56.8x), representing one of the most attractive entry points in the dataset. From early 2023 onward, ISRG embarked on a sustained recovery and re-rating, with prices rising from ~$240 to a peak of ~$588 in early 2025, briefly touching the "Overvalued" zone (between 73.4x and 81.7x). The subsequent pullback through mid-2025 brought the stock back toward the "Fair" to "Watch" range, and the latest reading confirms a settling in the Fair interval. Importantly, the PE stream bands themselves have trended upward throughout the period, reflecting consistent underlying earnings growth — a positive structural signal suggesting the river chart's upward trajectory supports continued investment consideration for long-term holders.