Study of the chapter related to firms' activity in the preliminary prospectuses for 50 listed companies in the "Nouveau marché" shows the existence of 5 disclosure policies. Except for the P/E ratio, empirical study confirms the strategic information effect on value explanation, measured by the Market-to-Book, Firm Value-to-Sales revenue, Firm Value-to-EBIT. Finally, Cumulative Abnormal Return over ten and sixty-day periods are positively associated with the disclosure policy of strategic information.
