Using a sample of 44,288 firm-years between 1984 and 1997, we document an increase in the extent of global diversification over time. This trend does not reflect a substitution of global for industrial diversification. We also find that global diversification results in average valuation...

Using a sample of 44,288 firm-years over the period 1984-1997, we document an increase in both the incidence and the extent of global diversification over time. This trend does not, however, reflect a substitution of global for industrial diversification. We also find that global diversification...