Cramer's 8 signs the market's healthy to invest in By: CNBC.com News January 26, 2015 at 18:17 PM EST Jim Cramer uses his own special methodology to calculate the health of the market. Get ready to invest! Read More >> Related Stocks: Alibaba Group Holding Ltd Biomarin Pharmaceuticals Box Inc D.R.Horton Dollar General MeadWestvaco Corp Moelis Netflix