Is Amentum Holdings, Inc. overvalued or undervalued?

As of 21 November 2025, the valuation grade for Amentum Holdings, Inc. has moved from attractive to very expensive, indicating a shift towards overvaluation. The company is currently assessed as overvalued, given the absence of key valuation ratios such as P/E, EV/EBITDA, and PEG in the peer comparison, which suggests a lack of competitive valuation metrics.
Despite the absence of specific ratios, the company's current price of 24.26 is significantly above its 52-week low of 16.01, reflecting a premium valuation. In terms of performance, Amentum has outperformed the S&P 500 over the past week and month, with returns of 9.92% and 6.17%, respectively, while the S&P 500 has declined. However, over the past year, Amentum's return of -2.02% lags behind the S&P 500's 11.00%, reinforcing the notion that the stock may be overvalued in the current market context.