Since Markowitz proposed modern portfolio theory, portfolio optimization has been being a classic topic in financial engineering. Although it is generally accepted that options help to improve the market, there is still an improvement for the portrayal of their unique properties in portfolio...

We propose a general approximation method for the determination of optimal trading strategies in markets with proportional transaction costs, with a polynomial approximation of the residual value function. The method is exemplified by several problems, from optimally tracking benchmarks and...

In this paper we adapt the model of MacLeod (2007) to provide one way to formally implement some of Williamson's ideas regarding the effect of transactions costs upon employment relationship. We then explore the empirical implications of this model with a data set that measures job...

Background: Concerns have been raised about physician ownership of onsite advanced imaging equipment as allowed under Stark laws by the in-office ancillary service exception (IOASE). Methods: A web-based survey of orthopedic practices in the United States was used to assign a first date of...

We introduce a computationally tractable dynamic equilibrium model of the automobile market where new and used cars of multiple types (e.g. makes/models) are traded by heterogeneous consumers. Prices and quantities are determined endogenously to equate supply and demand for all car types and...

High transaction costs and thin participation plague water quality trading and prevent markets from delivering expected efficiency gains. Point sources generate a single pollutant, while nonpoint sources generate multiple, complementary pollutants. We develop a dynamic search model of...

We apply agency theory to the payroll records of a copper mine that paid a production bonus to teams of workers. As with most incentive pay used by firms, the bonus was simpler in form than the optimal contract that balances incentives, insurance, and free-riding. We explore whether transactions...

The thesis of this paper is that transactions costs related to formation of nonprofit corporations are restraining the size of the nonprofit sector in Europe. An unfettered ability to incorporate is an important determinant of nonprofit formation. The point is illustrated with historical data...

Farmers incur proportional and fixed transactions costs in selling their crops on markets. Using data for Peruvian potato farmers, we propose a method to measure these transactions costs. When opportunities exist to sell a crop on alternative markets, the observed choice of market can be used to...