Share repurchases are transactions which are supposed to cause a market reaction through a signaling approach. However looking only at cumulated abnormal returns (CARs) is insufficient and the results are sometimes contradictory. We introduce the concept of informativeness to assess if...

Are mergers and acquisitions significant events which develop informativeness seen as the disclosure of private and specific information after a transaction? Is the informativeness process the same between countries? To answer to these questions we use the concept of informativeness, as first...