1. Introduction This paper aims to shed light on the propositions put forward by Modigliani and Miller (1958, 1963) in their seminal work concerning the relationship between firm value and the financing decision. Debt is one of the principle sources of financial risk. Rational, risk-averse investors should demand a leverage premium, indicating an expected positive relationship between firm's leverage and stock returns. The vast majority of the studies in the area of capital structure investigate either the determinants of leverage or the existence of on optimal capital structure. Also, there are a few studies that examine the relationship between leverage and stock returns, with contradictory results, mainly in the USA and UK market oriented economies. The aim of the present paper is to provide additional empirical evidence in the relationship between leverage and stock returns, which up to know has attracted limited attention in the literature. In doing so, we treat leverage as an independent factor, in line with previous work (Hamada, 1969; Bhandari, 1988; Korteweg, 2004; Dimitrov and Jain, 2006; George and Hwang, 2010), and examine whether leverage is an asset pricing factor that can explain stock return variability. Furthermore, we perform our analysis both on a full sample basis and on an industry basis in order to investigate if the impact of leverage on stock returns varies as to the firm's industry classification, since, industry class is generally considered as an important risk factor. By using leverage as an independent factor the results of the present study can be converted to a practical tool, that is to say a successful investment (leverage) strategy. It is an aspect where limited work has been undertaken, and to the best of our knowledge it is the first to be undertaken in the Continental European, bank-oriented environment. The completely different politico-economical, legal, and institutional framework (the arm's length system of USA and UK vs. the control-based system of Continental Europe, Drobetz and Pensa 2007) the few previous studies have been carried out, justify the necessity of further exploration of the above relationship. Thus, the main objective of the present paper will be investigated with the use of a dataset from Greece and Italy, i.e. two countries from Continental Europe that has a bank oriented economy, contributing by this way the necessary accumulation of non-US and non-UK research. The importance of country specific characteristics on the capital structure theme has been emphasized in the literature (Rajan and Zingales, 1995; Psillaki and Daskalakis, 2009; Oztekin, 2009; Brounen et al., 2006; Andritzky, 2003; Alves and Ferreira, 2011). Specifically, Antoniou et al. (2008) examined firms operating in capital market oriented economies and bank oriented economies and concluded that the capital structure decision of a firm is not only the product of it's own characteristics, but also the result of the environment and traditions in which it operates. Jong et al. (2008,) give evidence that creditor right protection, bond market development and GDP growth rate have a significant influence on capital structure issues, highlighting the importance of country-specific factors in the corporate finance field. Moreover, literature on the corporate governance issues suggest that there may be strong differences in corporate objectives between the Anglo-American' and the Continental European Financial systems-the maximization of shareholders vs. the maximization of all stakeholders objective, Bancel and Mittoo (2004). Furthermore, the objective of the present paper will be tested in a different market environment as Greece and Italy have differentiating characteristics from other countries of the Eurozone. Specifically, the above mentioned countries, while members of the Euro zone, have a medium stock market compared to other European stock exchanges in terms of market capitalization, number of firms listed and turnover volume. …
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