Description: Essay stating Americans need to invent, implement, and evaluate sustainable health care policies, divert cash-flow streams away from projects which feed the beast and focus on projects and policies which enhance value. It will require a combination of thoughtful, coordinated policies and a change in our cultural expectations of infinite resources and unlimited choice.

Description: This paper discusses the martingale approach for pricing American-type options without an expiry date. These options include the perpetual American put option and the perpetual maximum option in one stock case. The word “perpetual” means that the option has no expiry date. A main tool in this approach is the principle of smooth pasting.

Description: In this paper, we illustrate how to value American-style options using the Least-Squares Monte Carlo LSM approach proposed by Longstaff and Schwartz 2001 and investigate whether there exists an optimal regression complexity in the LSM framework for options pricing. In particular, we use the smoothing spline in the regression step, which allows us to control the regression complexity on a continuous scale with just one tuning parameter. Numerical results on American put options indicate that we need to use more than a linear regression, but as the regression becomes more complex, the accuracy of the LSM method quickly deteriorates. From 39th Actuarial Research Conference.

Description: This paper asks the Modligliani-Miller question regarding the mortgage markets. The paper is essentially about the genesis of the credit crisis. The proposed answer is that the practice of risk should not be allowed without actuarial supervision.

Description: This paper investigates the interaction between a credit portfolio and another risk type, which can be thought of as market risk. We analytically calculate their inter-risk correlation and show how inter-risk correlation bounds can be derived.