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Tests of International CAPM with Time-Varying Covariances

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  • Engel, Charles
  • Rodrigues, Anthony P

Abstract

We perform maximum-likelihood estimation of a model of international asset pricing based on CAPM. We test the restrictions imposed by CAPM against a more general asset pricing model. The "betas" in our CAPM vary over time as the supplies of assets change and as the conditional covariances or returns on those assets change. We let the covariances change over time as a function of macroeconomic data, and an alternative model allows the covariances to follow a multivariate ARCH process. We also can identify a modified CAPM model with measurement error. We find that the estimated CAPM performs much better when variances are not constant over time. Nonetheless, CAPM is rejected in favor of the less-restricted model of asset pricing. Copyright 1989 by John Wiley & Sons, Ltd.

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Bibliographic Info

Article provided by John Wiley & Sons, Ltd. in its journal Journal of Applied Econometrics.

Volume (Year): 4 (1989)
Issue (Month): 2 (April-June)
Pages: 119-38

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Handle: RePEc:jae:japmet:v:4:y:1989:i:2:p:119-38

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  1. Jeffrey A. Frankel, 1987. "Recent Estimates of Time-Variation in the Conditional Variance and in the Exchange Risk Premium," NBER Working Papers 2367, National Bureau of Economic Research, Inc.
  2. Diebold, Francis X & Nerlove, Marc, 1989. "The Dynamics of Exchange Rate Volatility: A Multivariate Latent Factor Arch Model," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 4(1), pages 1-21, Jan.-Mar..
  3. Domowitz, Ian & Hakkio, Craig S., 1985. "Conditional variance and the risk premium in the foreign exchange market," Journal of International Economics, Elsevier, vol. 19(1-2), pages 47-66, August.
  4. Dooley, Michael & Isard, Peter, 1982. "A portfolio-balance rational-expectations model of the dollar-mark exchange rate," Journal of International Economics, Elsevier, vol. 12(3-4), pages 257-276, May.
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  6. Bollerslev, Tim & Engle, Robert F & Wooldridge, Jeffrey M, 1988. "A Capital Asset Pricing Model with Time-Varying Covariances," Journal of Political Economy, University of Chicago Press, vol. 96(1), pages 116-31, February.
  7. Tim Bollerslev, 1986. "Generalized autoregressive conditional heteroskedasticity," EERI Research Paper Series EERI RP 1986/01, Economics and Econometrics Research Institute (EERI), Brussels.
  8. Geweke, John F & Feige, Edgar L, 1979. "Some Joint Tests of the Efficiency of Markets for Forward Foreign Exchange," The Review of Economics and Statistics, MIT Press, vol. 61(3), pages 334-41, August.
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  11. Hsieh, David A., 1984. "Tests of rational expectations and no risk premium in forward exchange markets," Journal of International Economics, Elsevier, vol. 17(1-2), pages 173-184, August.
  12. Jeffrey A. Frankel, 1985. "The Implications of Mean-Variance Optimization for Four Questions in International Macroeconomics," NBER Working Papers 1617, National Bureau of Economic Research, Inc.
  13. Branson, William H. & Halttunen, Hannu & Masson, Paul, 1977. "Exchange rates in the short run: The dollar-dentschemark rate," European Economic Review, Elsevier, vol. 10(3), pages 303-324.
  14. Hansen, Lars Peter & Hodrick, Robert J, 1980. "Forward Exchange Rates as Optimal Predictors of Future Spot Rates: An Econometric Analysis," Journal of Political Economy, University of Chicago Press, vol. 88(5), pages 829-53, October.
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  17. Jeffrey A. Frankel, 1984. "Tests of Monetary and Portfolio Balance Models of Exchange Rate Determination," NBER Chapters, in: Exchange Rate Theory and Practice, pages 239-260 National Bureau of Economic Research, Inc.
  18. Giovannini, Alberto & Jorion, Philippe, 1988. "Foreign exchange risk premia volatility once again," Journal of International Money and Finance, Elsevier, vol. 7(1), pages 111-113, March.
  19. Giovannini, Alberto & Jorion, Philippe, 1987. "Interest rates and risk premia in the stock market and in the foreign exchange market," Journal of International Money and Finance, Elsevier, vol. 6(1), pages 107-123, March.
  20. Robert E. Cumby & Maurice Obstfeld, 1984. "International Interest Rate and Price Level Linkages under Flexible Exchange Rates: A Review of Recent Evidence," NBER Chapters, in: Exchange Rate Theory and Practice, pages 121-152 National Bureau of Economic Research, Inc.
  21. Michael P. Dooley & Peter Isard, 1979. "The portfolio-balance model of exchange rates," International Finance Discussion Papers 141, Board of Governors of the Federal Reserve System (U.S.).
  22. Lars Peter Hansen & Robert J. Hodrick, 1983. "Risk Averse Speculation in the Forward Foreign Exchange Market: An Econometric Analysis of Linear Models," NBER Chapters, in: Exchange Rates and International Macroeconomics, pages 113-152 National Bureau of Economic Research, Inc.
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