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International Asset Pricing and Portfolio Diversification with Time‐Varying Risk
Author(s) -
SANTIS GIORGIO,
GERARD BRUNO
Publication year - 1997
Publication title -
the journal of finance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 18.151
H-Index - 299
eISSN - 1540-6261
pISSN - 0022-1082
DOI - 10.1111/j.1540-6261.1997.tb02745.x
Subject(s) - diversification (marketing strategy) , capital asset pricing model , autoregressive conditional heteroskedasticity , economics , econometrics , financial economics , portfolio , equity (law) , consumption based capital asset pricing model , heteroscedasticity , autoregressive model , volatility (finance) , business , marketing , law , political science
We test the conditional capital asset pricing model (CAPM) for the world's eight largest equity markets using a parsimonious generalized autoregressive conditional heteroskedasticity (GARCH) parameterization. Our methodology can be applied simultaneously to many assets and, at the same time, accommodate general dynamics of the conditional moments. The evidence supports most of the pricing restrictions of the model, but some of the variation in risk‐adjusted excess returns remains predictable during periods of high interest rates. Our estimates indicate that, although severe market declines are contagious, the expected gains from international diversification for a U.S. investor average 2.11 percent per year and have not significantly declined over the last two decades.