Overall, our proposed framework is quite general and is applicable to investment decisions in real time. For one, moments used to form optimal portfolios obey closed-form expressions. This facilitates the implementation of formal trading strategies across a large universe of mutual funds. In addition, our strategies employ long-only positions in mutual funds, which implies long-only positions in the underlying stocks (since almost no mutual funds short-sell stocks)—thus, our models derive performance from strategies that could potentially be implemented by investing in mutual funds or in their underlying stock choices
