Investors’ reactions on the publication of integrated reports. Evidence from European stock markets

The last decades brought to stock market investors’ attention several key issues regarding companies’ activity, besides the financial statements. These issues, such as environmental, social, or corporate governance policies are nowadays included in integrated reports issued by many listed companies worldwide. Although these topics seem to currently attract a high interest in the media, our study’s aim is to determine whether the listed firms’ release of Integrated Reports has any bearing on the issuers’ performance on the capital market as assessed by market value, return, and risk. In this respect, we analysed three different stock market time series’ reactions – daily close prices, daily logarithmic returns, and risk measured by the Expected Shortfall – to the publication of integrated reports, for a sample of 48 companies, listed on various European stock markets. In order to identify any sudden changes in the analysed time series behaviour, immediately after the publication date, we used the Bai-Perron multiple structural breaks test. Our results show that no consistent, significant reactions occur within the analysed time series immediately after the publication of integrated reports, but only isolated, circumstantial reactions seem to appear. Moreover, it seems that the markets show common significant reactions to certain events, marked by major structural breaks, but none of these events could be related to the publication of integrated reports. Within this context, our paper manages to prove that although it currently constitutes a hot topic worldwide, integrated reporting is not a key feature in the investors’ short-term decision-making process.