Is Community Health Systems, Inc. overvalued or undervalued?

As of 2 August 2016, the valuation grade for Community Health Systems, Inc. has moved from fair to risky, indicating a shift in the company's financial outlook. The company is currently considered overvalued given its negative P/E ratio and a Price to Book Value of -0.29. Key ratios include an EV to EBITDA of 8.52 and a ROCE of 9.64%.
In comparison with peers, Brookdale Senior Living, Inc. has a P/E of -10.15 and an EV to EBITDA of 3.19, while National HealthCare Corp. shows a more favorable P/E of 15.83 and an EV to EBITDA of 8.29. The stock has had a mixed performance relative to the S&P 500, with a year-to-date return of 12.37%, which contrasts with the broader index's return of 2.44%. Overall, the company's financial metrics and peer comparisons suggest that it is overvalued in the current market.