Is Post Holdings, Inc. overvalued or undervalued?

As of 17 October 2025, the valuation grade for Post Holdings, Inc. has moved from fair to attractive, indicating a positive shift in its perceived value. The company appears to be undervalued, particularly when considering its P/E ratio of 22, which is lower than the peer average of 20.40 for similar companies, and an EV to EBITDA ratio of 11.35, which also suggests a favorable valuation compared to its peers. Additionally, the PEG ratio of 3.53 indicates that the stock may be undervalued relative to its growth expectations.
In the peer comparison, Conagra Brands, Inc. shows a very attractive P/E of 8.91, while The J. M. Smucker Co. has a higher P/E of 23.79, highlighting the relative attractiveness of Post Holdings. The recent stock performance shows that Post Holdings has underperformed against the S&P 500 on a year-to-date basis, returning -7.55% compared to the S&P's 13.30%, but it has outperformed over the 5-year period with a return of 73.60% versus the S&P's 91.29%. This mixed performance reinforces the notion that while the stock may currently be undervalued, it has potential for recovery and growth.