Exchange rate exposure: A simple model

This study develops a model of foreign exchange exposure dependent on only three variables, the percentage of the firm's revenues and expenses denominated in foreign currency and its profit rate. The model demonstrates that foreign exchange exposure elasticities should be largest for pure exporting and importing firms, especially those with low profit margins. Exposure elasticities should be smaller for multinational firms that match their foreign currency revenues and costs. Such operational hedges may help to explain why previous studies have found low or negligible levels of exposure when they studied the sensitivity of share prices to foreign exchange rates.