CORADIAN <CDIN.O> STAKE ACQUIRED BY SAGE Coradian Corp said a group led by privately held Sage Equities Group agreed to buy a 7.6 pct interest in Coradian. In connection with the agreement, the company said it sold 666,667 shares at 75 cts a share. It said that in addition to common stock, Sage Equities will receive 667,667 warrants exercisable at 1.50 dlrs a share.