Bernard, Andrew B.; Redding, Stephen; Schott, Peter K. - 2009
This paper examines the frequency, pervasiveness and determinants of product switching by U.S. manufacturing firms. We … find that one-half of firms alter their mix of five-digit SIC products every five years, that product switching is … correlated with both firm- and firm-product attributes, and that product adding and dropping induce large changes in firm scope …