Is NN, Inc. overvalued or undervalued?

As of 14 March 2019, the valuation grade for NN, Inc. moved from fair to risky, indicating a deterioration in its financial outlook. The company appears to be overvalued given its key ratios, including a Price to Book Value of 0.64, an EV to EBITDA of 18.26, and a negative ROCE of -8.77%. In comparison, peers such as Insteel Industries, Inc. and Park-Ohio Holdings Corp. have more favorable valuations with P/E ratios of 22.80 and 9.58, respectively.
The stock has significantly underperformed against the S&P 500, with a year-to-date return of -29.66% compared to the index's 12.22%. This stark contrast in performance further supports the conclusion that NN, Inc. is overvalued in its current state.