ATLANTA--(BUSINESS WIRE)--Argonne Capital Group, a closely-held private investment firm based in Atlanta, GA, has completed a transaction in which a consortium of blue-chip institutional investors has invested approximately $530mm in six companies controlled by Argonne. Glendower Capital led the transaction. The consortium of institutional investors included GCM Grosvenor, Hamilton Lane and Strategic Partners. The transaction provides liquidity to long-standing investors in certain Argonne port