|Key people||Dr. Christian Olearius, Spokesman
For over 200 years, the company has been held only in private hands.
Two partners liable to unlimited extent and two other partners manage the business. The "CO" in the name, written with two capital letters, stands also for one of the partners liable to unlimited extent, Dr. Christian Olearius.
During the last years, the bank has grown through many acquisitions. It bought several German private banks such as Marcard, Stein & Co. in Hamburg, Carl F. Plump & Co. in Bremen, Bankhaus Hallbaum & Co. in Hannover and Loebbecke & Co. in Berlin. Furthermore, there are the foreign subsidiaries M. M. Warburg Bank (Switzerland) AG and M. M. Warburg Luxembourg S.A., as well as various mutual funds, real estate companies, and a shipping issuing house.