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Risk Preferences and Efficiency of Household Portfolios

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  • Agostino Capponi
  • Zhaoyu Zhang

Abstract

We propose a novel approach to infer investors' risk preferences from their portfolio choices, and then use the implied risk preferences to measure the efficiency of investment portfolios. We analyze a dataset spanning a period of six years, consisting of end of month stock trading records, along with investors' demographic information and self-assessed financial knowledge. Unlike estimates of risk aversion based on the share of risky assets, our statistical analysis suggests that the implied risk aversion coefficient of an investor increases with her wealth and financial literacy. Portfolio diversification, Sharpe ratio, and expected portfolio returns correlate positively with the efficiency of the portfolio, whereas a higher standard deviation reduces the efficiency of the portfolio. We find that affluent and financially educated investors as well as those holding retirement related accounts hold more efficient portfolios.

Suggested Citation

  • Agostino Capponi & Zhaoyu Zhang, 2020. "Risk Preferences and Efficiency of Household Portfolios," Papers 2010.13928, arXiv.org.
    • Handle: RePEc:arx:papers:2010.13928
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