American Renal Associates Holdings, Inc (ARA) is a risky bet given it's low Altman Z-score. Companies with a low Altman Z-score have a higher chance of going bankrupt within the next 2 years. The stock has a good momentum. American Renal Associates Holdings, Inc (ARA) is not very popular among insiders. American Renal Associates Holdings, Inc (ARA) is a good stock to invest in, but there are better stocks to choose.