Inhaltsangabe:Abstract: Over the last decade product and factor markets have continued to become more integrated, new markets have emerged and the globalization has become an important strategic issue for companies. As a result, international investment opportunities have in-creased while regulatory restrictions on capital markets have been eased and the market for corporate control has become more integrated. Consequently, the international acquisition activity has increased in both absolute and relative terms over the last decades leading to a significant rise of the proportion of international to domestic merger activity, particularly at the end of the 1990s. As more and more companies consider international diversification as a strategic option for their further growth, the question arises which valuation consequences accompany cross-border acquisitions. Furthermore, it is to be analyzed whether these consequences differ systematically from domestic acquisitions and what could be possible value drivers in these cases. Although mergers and acquisitions in general have received wide attention in academic research, studies concerning the wealth effects of cross-border acquisitions are limited. Moreover, existing empirical evidence primarily stems from the US and UK capital markets neglecting generally the European perspective. Spain, Europe?s fifth largest economy, has seen a series of considerable cross-border acquisitions in the last decade culminating in the merger of San...