The question of how firms differ is paramount to strategy scholars. This question has motivated empirical research on the factors influencing performance differences among close competitors. It also has motivated work on factors that increase or decrease the mean performance of firms in an...

In this paper we examine how personnel flows from incumbents to entrants affect entrant growth after a significant break in the rules governing competition in an industry. We argue that the time-varying network of personnel mobility between incumbents measures how technical knowledge and social...