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, indicating a shift in perceived value. The company appears to be overvalued based on its current metrics, particularly with a P/E ratio of 22, which is higher than the peer average of approximately 20.40 for comparable companies like The J. M. Smucker Co. and Conagra Brands, Inc. Additionally, the EV to EBITDA ratio stands at 11.35, which is also elevated compared to peers, suggesting a premium valuation.
In comparison to its industry, Post Holdings, Inc. shows a Price to Book Value of 2.22 and a PEG ratio of 3.53, both of which indicate potential overvaluation relative to its growth prospects. While the company has delivered a solid return of 78.08% over the past five years, this is significantly lower than the S&P 500's return of 109.18% in the same period, reinforcing the notion that the stock may not be keeping pace with broader market performance.