An option contract is a zero-sum game, so two identical risk-averse investors would never take opposite sides of it. While they will agree on the correct option price, they would never trade with each other. Heterogeneity is essential for options trading to exist, and aggregating diverse...

This paper studies the impact government expenditure has on inflation by examining an augmented Phillips curve implied from a structural New Keynesian model, Our estimation results, based on external instruments, show that the augmented Phillips curve has a flatter slope than the canonical...