This article presents a model to analyze consumer welfare, price, and competition in a three-way market among consumers, medical providers, and insurers. While insurers compete with each other for customers, they also act as collective bargaining agents on behalf of consumers in determining the equilibrium price of health care with providers. The entry of an additional insurer thus has contradi...

We compare macroeconomic models of sticky-prices (Calvo and Costsof-adjustment) with flexible price models in terms of optimal seigniorage. This sheds light on the importance of relative price distortions. Sticky-price models with no price dispersion terms have unattractive implications, we argue, when it comes to the derivation of optimal policies. We provide examples where they may imply very...

This paper provides evidence that a firm’s stock price movements affect its customer demand. I develop a model in which customers learn about a firm’s product quality partially from its stock price. This learning induces feedback from the price to customer demand. Furthermore, the firm manager adjusts product launch decisions in anticipation of these demand shifts. Consistent with the model’s i...

A large economic literature discusses the implications of export sanctions for a variety of states around the world. This paper investigates the macro-level consequences of imposing oil export barriers on an oil exporting country. We employ a large real financial computable general equilibrium for Iran. The model is calibrated based on 1999 Social Accounting Matrix for the economy of Iran inc...

The standard approaches to estimating minimum variance hedge ratios (MVHRs) are mis-specified when futures prices are subject to price limits. This paper proposes a bivariate tobit-FIGARCH model with maturity effects to estimate dynamic MVHRs using single and multiple period approaches. Simulations and an application to a commodity futures hedge support the proposed approach and highlight the i...

I study price competition in settings where end products are combinations of components supplied by different monopolists, nesting standard models of perfect complements and imperfect substitutes. I show sufficient conditions for a discrete-choice demand system to yield demand for each product which is logconcave in price, and has log-increasing differences in own and another product’s price, l...

This paper analyzes the relationship between currency price changes and their expectations. Currency price change expectations are derived with the help of different order flow measures, from the trading behavior of investors on OANDA FXTrade, which is an internet trading platform in the foreign exchange market. We investigate whether forecasts of intra-day price changes on different sampling f...

This paper studies how changes in oil supply expectations affect the price and macroeconomy. Using a novel identification design, exploiting institutional features of OPEC high-frequency data, I identify an news shock. These shocks have statistically economically significant effects. Negative leads to immediate increase prices, gradual fall production, inventories. has consequences for US econo...

This paper presents a 3D model for pricing defaultable bonds with embedded call options. The pricing model incorporates three essential ingredients in the pricing of defaultable bonds: stochastic interest rate, stochastic default risk, and call provision. Both the stochastic interest rate and the stochastic default risk are modeled as a square-root diffusion process. The default risk process is...