Is Post Holdings, Inc. overvalued or undervalued?

As of 31 October 2025, the valuation grade for Post Holdings, Inc. has moved from very attractive to attractive. The company appears to be fairly valued based on its current metrics. Key ratios include a P/E ratio of 22, an EV to EBITDA of 11.35, and a PEG ratio of 3.53. In comparison, The J. M. Smucker Co. has a higher P/E of 23.79, while Conagra Brands, Inc. presents a much lower P/E of 8.91, highlighting a significant disparity among peers.
Despite its attractive valuation grade, Post Holdings has underperformed against the S&P 500, with a year-to-date return of -7.58% compared to the index's 16.30%. This trend continues over one year, where the stock returned -3.58% against the S&P 500's 19.89%. Overall, while the valuation ratios suggest a fair valuation, the recent stock performance raises concerns about its growth potential relative to the broader market.