José Manuel Campa

Explaining the Diversification Discount

Diversified firms trade at a discount relative to similar single-segment firms. We argue in this paper that this observed discount is not per se evidence that diversification destroys value. Firms choose to diversify. Firm characteristics, which make firms diversify might also cause them to be discounted. Not taking into account these firm characteristics might wrongly attribute the observed discount to diversification. Data from the Compustat Industry Segment File from 1978 to 1996 are used to select a sample of single segment and diversifying firms. We use three alternative econometric techniques to control for the endogeneity of the diversification decision. All three methods suggest the presence of self-selection in the decision to diversify and a negative correlation between firms choice to diversify and firm value. The diversification discount always drops, and sometimes turns into a premium, when we control for the endogeneity of the diversification decision. We do a similar analysis in a sample of refocusing firms. Again, some evidence of self-selection by firms exists and we now find a positive correlation between firms choice to refocus and firm value. These results consistently suggest the importance of taking the endogeneity of the diversification status into account, in analyzing its effects on firm value.

Exchange Rate Pass-Through into Import Prices

We provide cross-country and time series evidence on the extent of exchange rate pass-through into the import prices of 23 OECD countries. We find compelling evidence of partial pass-through in the short run, especially within manufacturing industries. Over the long run, producer-currency pricing is more prevalent for many types of imported goods. Countries with higher rates of exchange rate volatility have higher pass-through elasticities, although macroeconomic variables have played a minor role in the evolution of pass-through elasticities over time. Far more important for pass-through changes in these countries have been the dramatic shifts in the composition of country import bundles.

Exchange Rate Pass-Through into Import Prices: A Macro or Micro Phenomenon?

Exchange rate regime optimality, as well as monetary policy effectiveness, depends on the tightness of the link between exchange rate movements and import prices. Recent debates hinge on whether producer-currency-pricing (PCP) or local currency pricing (LCP) of imports is more prevalent, and on whether exchange rate pass-through rates are endogenous to a countrys macroeconomic conditions. We provide cross-country and time series evidence on both of these issues for the imports of twenty-five OECD countries. Across the OECD and especially within manufacturing industries, there is compelling evidence of partial pass-through in the short-run- rejecting both PCP and LCP. Over the long run, PCP is more prevalent for many types of imported goods. Higher inflation and exchange rate volatility are weakly associated with higher pass-through of exchange rates into import prices. However, for OECD countries, the most important determinants of changes in pass-through over time are microeconomic and relate to the industry composition of a countrys import bundle.

Entry by Foreign Firms in the United States under Exchange Rate Uncertainty

This paper tests the effects that real exchange-rate fluctuations had on foreign direct investment into the United States during the 1980s. Using a sample of foreign investments in sixty-one four-digit SIC U.S. wholesale industries, this paper finds exchange-rate volatility to be negatively correlated with the number of foreign investments that occur in these industries. This negative effect is most pronounced for industries where sunk investments in physical and intangible assets are relatively high. Although exchange rate volatility deters investment from all countries, its effect was most significant for investments by Japanese companies. Copyright 1993 by MIT Press.

Exchange Rates and Trade: How Important is Hysteresis in Trade?

This paper looks at the responsiveness of a countrys export supply to exchange rate changes and measures its quantitative importance by breaking down export adjustments between changes in output levels by existing exporters (intensive margin) and movements due to changes in the number of exporters (extensive margin). Using data on a representative sample of Spanish manufacturing firms, the paper finds sunk costs hysteresis in entry and exit to be an important factor in determining export market participation, but unrelated to exchange rate uncertainty. The sunk costs of entering the market appear to be much larger than the costs of exiting the market. Finally, although hysteresis exists, its effect on the responsiveness of aggregate trade volumes to exchange rate changes is quantitatively small. A 10% home currency depreciation results in an increase in export volume due to the increase in the number of exporting firms of only 1.5% of export volume.

The Sensitivity of the CPI to Exchange Rates: Distribution Margins, Imported Inputs, and Trade Exposure

This paper quantifies the relative importance of the different channels of CPI responsiveness to exchange rates and import prices across 21 industrialized economies. The paper provides new and rich cross-country and cross-industry details on the sensitivity to exchange rates of distribution margins; the extent of imported inputs use in different categories of consumption goods; and on their role in consumption of nontradables, home-produced tradables, and imported goods. The dominant channel for CPI sensitivity is through the costs arising from imported input use in goods production. This channel is more important than changes in prices of imported goods directly consumed.

Employment Versus Wage Adjustment and the U.S. Dollar

Using two decades of annual data, we explore the links between real exchange rates and employment, wages and overtime activity in specific U.S. manufacturing industries. Across two-digit industry levels of aggregation, exchange rate movements do not have large effects on numbers of jobs or on hours worked. More substantial effects are picked up in industry wages, especially for industries characterized by low price-over-cost markup ratios, and in overtime wages and overtime employment. The industry-by-industry pattern of wage responsiveness is not strongly related to industry export orientation or changes in overall external orientation. Industries with low price-over-cost markups and those with a less skilled workforce exhibit relatively larger employment elasticities but lower wage elasticities.

Differences in Exchange Rate Pass-Through in the Euro Area

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Exchange-Rate Pass-Through to Import Prices in the Euro Area

This paper presents an empirical analysis of transmission rates from exchange rate movements to import prices, across countries and product categories, in the euro area over the last fifteen years. Our results show that the transmission of exchange rate changes to import prices in the short run is high, although incomplete, and that it differs across industries and countries; in the long run, exchange rate pass-through is higher and close to one. We find no strong statistical evidence that the introduction of the euro caused a structural change in this transmission. Although estimated point elasticities seem to have declined since the introduction of the euro, we find little evidence of a structural break in the transmission of exchange rate movements except in the case of some manufacturing industries. And since the euro was introduced, industries producing differentiated goods have been more likely to experience reduced rates of exchange rate pass-through to import prices. Exchange rate changes continue to lead to large changes in import prices across euro-area countries.

Pass Through of Exchange Rates to Consumption Prices: What Has Changed and Why?

In this paper, we use cross-country and time-series evidence to argue that retail price sensitivity to exchange rates may have increased over the past decade. This finding applies to traded goods as well as to non-traded goods. We highlight three reasons for the change in pass-through into the retail prices of goods. First, pass-through may have declined at the level of import prices, but the evidence is mixed over types of goods and countries. Second, there has been a large expansion of imported input use across sectors, meaning that the costs of imported goods as well as home-tradable goods have heightened sensitivity to import prices and exchange rates. Finally, we consider whether there have been changing sectoral expenditures on distribution services, with the direction of change negatively correlated with pass-through into final consumption prices. We find that this channel, which has been a means of insulating consumption prices from import content and exchange rates, has not systematically changed in recent years. On balance, these effects support increased sensitivity of consumption prices to exchange rates, even if exchange rate pass-through into import prices has declined for some types of goods.