Most existing portfolio choice models ignore the prevalent periodic market closure and the fact that market volatility is significantly higher during trading periods. We find that market closure and the volatility difference across trading and nontrading periods significantly change optimal trading strategies. In addition, we numerically demonstrate that transaction costs can have a first order...

We solve the problem of pricing and optimal exercise of American call-type options in markets which do not necessarily admit an equivalent local martingale measure. This resolves an open question proposed by Fernholz and Karatzas [Stochastic Portfolio Theory: A Survey, Handbook of Numerical Analysis, 15:89168, 2009].

The general equilibrium model with incomplete asset markets provides a uni ed framework for many problems in nance and macroeconomics. In its simplest version with only two time periods and a single physical commodity the model is ideally suited for the study of problems in cross sectional asset pricing and portfolio theory. In this paper we develop a homotopy algorithm to approximate equilibri...

The theory of functionally generated portfolios (FGPs) is an aspect of the continuous-time, continuouspath Stochastic Portfolio Theory of Robert Fernholz. FGPs have been formulated to yield a master equation a description of their return relative to a passive (buy-and-hold) benchmark portfolio serving as the numéraire. This description has proven to be analytically very useful, as it is both pa...

We develop a new theory for pricing call type American options in complete markets which do not necessarily admit an equivalent local martingale measure. This resolve an open question proposed by Fernholz and Karatzas [Stochastic Portfolio Theory: A Survey, Handbook of Numerical Analysis, 15:89168, 2009].

Data envelopment analysis (DEA) is a representative method to estimate efficient frontiers and derive efficiency. However, in a situation with weight restrictions on individual input–output pairs, its suitability has been questioned. Therefore, the main purpose of this paper is to develop a mathematical method, which we call the input-oriented ratio-based comparative efficiency model, DEA-R-I, ...

Introduction: The portfolio can be seen as a tool for assessmentof a variety of learning activities that differ in content, usage, andassessment. The portfolio not only meets the learner’s educationalneeds but also the political and public reassurance demand thatthe health professional has achieved the required competency ofthe curriculum that allows him or her to practice safely with orwithout...

In this research, performance of portfolios formed by use of grid strategy based on new variables (aggressive, indifference and defensive stocks) presented by Rahnamaye Roodposhti (1388), and traditional ones (growth, growth-value and value stocks), calculated with Sharpe and Treynor performance measures and tested by an Active portfolio management approach to identify the portfolios by perform...

Multicriteria project evaluation and resource allocation decisions are central and recurrent activities in business and public administration alike. These problems are typically characterized by large number of project proposals, portfolio balance requirements and other constraints; they are also often pressed by urgency and limited data availability. Simple additive scoring models, which o er ...

1Jonathan B. Berk Haas School of Business University of California, Berkeley and National Bureau of Economic Research Email: [email protected] P roponents of “efficient markets” argue that it is impossible to consistently beat the market. In support of their view they point to the evidence that, as a group, active managers do not beat the market and conclude that even these investment prof...