Filed under Green Tech Are Aspen Technology, Inc. (NasdaqGS:AZPN), SL Green Realty Corp. (NYSE:SLG) Headed For … Published by on March 24, 2019 The Earnings Yield for Aspen Technology, Inc. (NasdaqGS:AZPN) stands at 0.030741. Earnings Yield helps investors measure the return on …