Is Nilachal Refract overvalued or undervalued?

As of 25 April 2023, the valuation grade for Nilachal Refractories Ltd. has moved from does not qualify to risky, indicating a significant shift in its perceived financial health. The company appears to be overvalued, given its negative PE ratio of -3.79, an EV to EBITDA ratio of -4.51, and a ROCE of -72.34%.
In comparison to its peers, Nilachal Refractories stands out with a notably poor performance, particularly when looking at its EV to EBITDA ratio, which is worse than many competitors in the industry. While the company has shown a slight positive return of 1.56% over the past week compared to the Sensex's 1.39%, its year-to-date performance of -17.69% starkly contrasts with the Sensex's 5.58%, reinforcing the notion that it is currently overvalued.