Is NN, Inc. overvalued or undervalued?

As of 14 March 2019, NN, Inc. has moved from a fair to a risky valuation grade, indicating a significant deterioration in its financial standing. The company is currently considered overvalued, particularly given its negative P/E ratio and troubling returns on capital. Key ratios include a Price to Book Value of 0.64, an EV to EBITDA of 18.26, and a ROE of -14.62%.
In comparison to its peers, NN, Inc. shows a stark contrast; for instance, Xometry, Inc. has a P/E of -34.24 and an EV to EBITDA of -48.58, while Insteel Industries, Inc. is deemed expensive with a P/E of 28.50 and an EV to EBITDA of 14.65. The company's recent stock performance has lagged behind the S&P 500, with a year-to-date return of -37.61% compared to the S&P's 2.44%, reinforcing the notion that NN, Inc. is not a favorable investment at this time.