Dirk Ziff 369 cityfile 02/08/08 09:33AM Filed to: Dirk Ziff Dirk Ziff Dirkziff Dirk E. Ziff Dirk-E.-Ziff Dirkeziff Profiles Thisissomethingthatneedsattn Cityfile Profile Dirk-Ziff This image was lost some time after publication.WhoOne of three sons of the now-deceased publishing titan William B. Ziff, Dirk has a net worth of $3.7 billion and serves as co-chairman of the investment firm Ziff Brothers Investments, which he runs with brothers Robert Ziff and Daniel Ziff.