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Systemic Risk and International Portfolio Choice
Author(s) -
DAS SANJIV RANJAN,
UPPAL RAMAN
Publication year - 2004
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.1540-6261.2004.00717.x
Subject(s) - stylized fact , diversification (marketing strategy) , portfolio , systemic risk , economics , jump , financial economics , econometrics , monetary economics , business , financial crisis , physics , marketing , quantum mechanics , macroeconomics
Returns on international equities are characterized by jumps; moreover, these jumps tend to occur at the same time across countries leading to systemic risk . We capture these stylized facts using a multivariate system of jump‐diffusion processes where the arrival of jumps is simultaneous across assets. We then determine an investor's optimal portfolio for this model of returns. Systemic risk has two effects: One, it reduces the gains from diversification and two, it penalizes investors for holding levered positions. We find that the loss resulting from diminished diversification is small, while that from holding very highly levered positions is large.