Tetraphase Pharmaceuticals, Inc. 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 momentum for this stock is not very good. Tetraphase Pharmaceuticals, Inc. is not very popular among insiders. Tetraphase Pharmaceuticals, Inc. is a mediocre stock to choose.