The Blackstone Group L.P. (NYSE:BX) has lost 6.9% during the past week and dropped 11.33% in the last 4 weeks. The shares are however, negative as compared to the S&P 500 for the past week with a loss of 3.4%. The Blackstone Group L.P. (NYSE:BX) has underperformed the index by 10.89% in the last 4 weeks. Investors should watch out for further signals and trade with caution. The Blackstone Group L.P. has dropped 19.17% during the last 3-month period . Year-to-Date the stock performance stands at -2.43%.The company shares have dropped 4.4% in the past 52 Weeks. On May...