Hellenic Exchanges Holding S.A., as part of the timely dissemination of information to the investing public and in order to avoid the creation of uncertainty in the daily operation of the derivatives market, announces that the Board of Directors decided to propose to the General Meeting of shareholders which will decide on the proposal for the return of share capital, to set Friday June 30th 2006 as the cutoff date for the corresponding right (i.e. after the expiration of the June HELEX derivative product). The Company will inform the investing public about the details and the payout date with a later press release.