Based on the latest data from August 2025, Procter & Gamble (PG) is trading at $157.04, positioning the stock in the undervalued zone below the 20.4x PE multiple boundary of $138.99. This represents a significant discount to the company's historical valuation ranges, with the stock trading below even the most conservative PE threshold. The current price sits well beneath the value zone (20.4x-28.1x PE, $138.99-$190.99), fair value zone (28.1x-35.7x PE, $190.99-$242.99), watch zone (35.7x-43.3x PE, $242.99-$294.99), overvalued zone (43.3x-51.0x PE, $294.99-$346.99), and warning zone (above 51.0x PE, above $346.99). Historically, PG has experienced significant valuation expansion and contraction cycles throughout the analyzed period. The stock began 2020 trading in undervalued territory around $108, but quickly moved into higher PE multiples by mid-2020, reaching the fair value and watch zones. From 2021 through early 2024, the stock predominantly traded within the value to fair value zones, with prices ranging between $114-$170 and corresponding PE multiples of 20.4x-35.7x. A notable valuation peak occurred in mid-2024 when the stock reached approximately $170, approaching the watch zone boundaries. However, the recent decline to $157 has brought the stock back to historically attractive valuation levels, suggesting potential investment opportunity based on the PE river chart methodology. The overall trend shows the PE boundaries have been gradually expanding upward, indicating growing earnings expectations, while the current price positioning below the lowest PE threshold represents the most attractive valuation in the dataset.