Blackstone Inc BX.N on Thursday said second-quarter distributable earnings dropped 39% amid a slump in asset sales, overshadowing a key milestone of the firm becoming the first manager of alternative investments such as private equity and real estate to amass $1 trillion in assets. The investment giant’s asset sale proceeds were down due to the sharp slowdown in the commercial property market. The loss was also hurt by rising redemptions at its flagship real estate income trust, contributing 17% to
