Measuring the economic importance of exchange rate exposure

This paper re-examines the nature and the economic significance of the exchange rate to firm value relation using a database of non-financial firms from over 18 countries. Our main contribution is to apply a portfolio approach to investigate the economic importance of exposure. We find that firms with high international sales outperform those with no international sales during periods of large currency depreciations by 0.72% per month, whereas they underperform by 1.10% per month during periods of large currency appreciations. In contrast to the previous literature, our evidence shows that exchange rate movements can have an economically significant impact on firm value.