Gerard O’Reilly serves as Head of Research & Vice President of Dimensional Fund Advisors. In this role, he helps develop, test, and implement the financial models used to build Dimensional’s structured portfolios. With a Ph.D. in aeronautics and applied mathematics from Cal Tech and an MSc in high-performance computing and BA in theoretical physics from Trinity College in Dublin, he came to Dimensional with an impressive background. Dr. O’Reilly talks about his role at Dimensional, the mission of the company, and the latest research being conducted.