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Ambiguity Preferences and Portfolio Choices: Evidence from the Field

Milo Bianchi () and Jean-Marc Tallon ()

No 17-862, TSE Working Papers from Toulouse School of Economics (TSE)

Abstract: We match administrative panel data on portfolio choices with survey data on preferences over ambiguity. We show that ambiguity averse investors bear more risk, due to a lack of diversiÖcation. In particular, they exhibit a form of home bias that leads to higher exposure to the domestic relative to the international stock market. While more sensitive to market factors, their returns are on average higher, suggesting that ambiguity averse investors need not be driven out of the market for risky assets. We also show that these investors rebalance their portfolio more actively and in a contrarian direction relative to past market trends, which allow them to keep their risk exposure relatively constant over time. We discuss these Öndings in relation to the theoretical literature on portfolio choice under ambiguity.

Date: 2017-11
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Related works:
Working Paper: Ambiguity Preferences and Portfolio Choices: Evidence from the Field (2019)
Working Paper: Ambiguity Preferences and Portfolio Choices: Evidence from the Field (2017)
Working Paper: Ambiguity Preferences and Portfolio Choices: Evidence from the Field (2014) Downloads
Working Paper: Ambiguity Preferences and Portfolio Choices: Evidence from the Field (2014) Downloads
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