Is Triumph Group, Inc. overvalued or undervalued?

As of 4 May 2016, the valuation grade for Triumph Group, Inc. moved from expensive to risky, indicating a shift in perception regarding its market valuation. The company appears to be overvalued, particularly given its P/E ratio of 29, which is significantly higher than the industry average, and a negative price-to-book value of -26.43. Additionally, the EV to EBITDA ratio stands at 13.52, suggesting that the company's earnings are not being adequately reflected in its valuation.
In comparison to its peers, Triumph Group's P/E ratio of 29.88 is notably higher than that of OSI Systems, Inc., which has a P/E of 24.50 and is classified as very attractive. Furthermore, Kratos Defense & Security Solutions, Inc. has a much higher P/E of 594.28 but is considered attractive, indicating that the market is willing to pay a premium for its growth potential. Despite Triumph Group's strong YTD return of 39.39%, which outperformed the S&P 500's 12.22%, the overall valuation metrics suggest that the stock is not justified at its current price level.