Athanasios P. Fassas 1 and Nikolas Hourvouliades 2,* 1. Department of Accounting and Finance, University of Thessaly, Larissa 41110, Greece 2. Department of Business Studies, American College of Thessaloniki, Thessaloniki 55535, Greece Received: 10 June 2019; Accepted: 28 June 2019; Published: 1 July 2019 Introduction A fundamental principle of finance is the positive expected return-risk trade-off. In this paper, we…
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