MATT BRIGIDA
Associate Professor of Finance (SUNY Polytechnic Institute)
Maximize return per unit risk: $max(\frac{Return}{Risk})$
What if we want to attempt to earn a higher return?
Leverage
This is the issue of separating the portfolio construction from risk preferences.
Generally, the longer your investment horizon the greater the ratio of your expected return to uncertainty.
Market making is a transaction business, and we lose the bid-ask spread each time we trade. We therefore should be very careful we don't transact too much.
Requires a very large investment in infrastructure.