Using detailed data from the United States, Canada, the United Kingdom, and
Japan, we examine the implications of exchange rates for time series of se
ctoral investment. Both theoretically and empirically, we show that investm
ent responsiveness to exchange rates varies over time, positively in relati
on to sectoral reliance on export share and negatively with respect to the
share of imported inputs in production. Important differences exist in inve
stment endogeneity across high- and low-price-over-cost markup sectors, wit
h investment in low-markup sectors often significantly more responsive to e
xchange rates. Cross-country differences in investment response are only pa
rtially explained by industrial organization arguments.