This e-book contains articles on the hypothesis that the nationality of ownership and whether it affects investment through its interaction with return expectations and cash flow. It will also attempt to answer the question whether this is due to asymmetric information or managerial discretion problems. The second paper presents evidence on the effects that different ownership's structures of Greek listed firms exercise on the relation between investment and liquidity constraints. The purpose of the third paper is to determine the variables of brand equity measurement for Greek companies quoted in the Greek exchange stock market. The purpose of the final paper is to identify herding behaviour on financial markets and measure the herding behaviour impact on the accuracy of analysts' earnings forecasts.