Transaction-cost models in continuous-time markets are considered. Given that investors decide to buy or sell at certain time instants, we study the existence of trading strategies that reach a certain final wealth level in continuous-time markets, under the assumption that transaction costs,...

Sector investment has grown significantly in international stock markets an also in the Spanish one, during the last few years. Among other issues, sector portfolio managers need to estimate accurately the beta of their portfolios in order to carry out more efficient investment strategies....

Capital Assets Pricing Model (CAPM) is the widely tested, accepted and rejected model of asset pricing. From its beginning (1964) it has occupied the prime place and still part of the text books on finance in leading business schools. This study is conducted in Pakistani institutional frame work...

The Modern Portfolio Theory (MPT) has been the cornerstone of the asset allocation for over 40 years. In the past decade though, it led in a rather systematic way to bad investments decisions. One of MPT's main assumptions, investor risk aversion that translates into volatility aversion, biases...

Because levered equity is an option on the firm, variations in asset idiosyncratic risk (ivol) induces a negative relationship between equity ivol and expected returns. We show that the effect is caused by the nonlinear payoff of equity and the law of one price, and is present in all but...

This study aims to analyze and test empirically the influence of corporate financial performance against systematic risk on stocks. The analysis technique used is multiple linear regression. The results showed that the financial performance did not significantly affect the systematic risk of the...

This paper presents two stocks recommendation systems based on a stochastic characterization of firm present value that extends the conventional discounted cash flow analysis. In the Single-Stock Quantile recommendation system, the market price of a company's stocks is compared with the...

Preqin and Pitchbook data are classified and analyzed to derive a coherent set of risk-return assumptions to combine with Listed liquid assets in a traditional mean-variance framework. We find expected returns of 11%-12% for PE and 8% for PD, PC detailed per subclass. Risk is decomposed in Class...

We study sources and implications of undiversified portfolios in a production-based asset pricing model with financial frictions. Households take concentrated positions in a single firm exposed to idiosyncratic shocks because managerial effort requires equity stakes, and because investors gain...

The paper discusses the lower partial moments for the return of the investment portfolio which consists of the assets whose random incomes are modeled by variance-gamma, gamma distributions and constants.The formulas depend on values of generalized hypergeometric functions. As a corollary, the...