Since Fama's Efficient Market Hypothesis (EMH), numerous authors have argued that it is impossible to constantly beat the market. The best an investor can do is buy and hold 'the market' through a market index. Taking into account the important role of market indices as benchmarks against which...

Empirical evidences regarding the association of idiosyncratic volatility and stock returns are inconsistent with the Capital Asset Pricing Model (CAPM), which implies that idiosyncratic risk should not be priced because it would be fully eliminated through diversification. Using Exponential...

Any faculty member with experience in teaching managerial finance and investment courses can cite occasional awkward findings by students about required rates of returns. Unfortunately, many times the explanations for such unexpected findings are not as simple as outlier problems in the sample...

What explains the cross section of expected returns for the 25 size/value Fama-French (FF) portfolios? It is found that modelling time-varying betas is important to explain the cross section of expected returns, as well as to comply with the time series restriction on Jensen-alpha. Support for a...