a. Why is superfluous diversification unavoidable for a large institutional investor?
b. What support does portfolio theory provide for the usefulness of the Beta concept? What do we mean when we say Beta is non-stationary? What is/are the value(s) of Beta Coefficient(s) for your EBP's pension fund(s)?
c. why has the focus of managers who run the defined-benefit pension plans been on surplus management of such pension funds?