Chen, Gongyu; Higson, Chris; Holly, Sean; Petrella, Ivan - DIW Berlin (Deutsches Institut für Wirtschaftsforschung) - 2010
We expect a firm's competitive advantage to manifest itself in a return on invested capital that is higher than the opportunity cost of capital. Deviations of returns from the cost of capital are a signal for competitive entry or for exit, while the speed of convergence indicates the strength of...