Home sweet home: Home bias and international diversification among individual investors

A striking feature of international portfolio investment is the extent to which equity portfolios are concentrated in the domestic market of the investor. We investigate differences in home bias on an individual level by studying portfolios formed as a part of the new defined contribution pension plan in Sweden. We estimate the likelihood of home bias and use individuals' demographic and socioeconomic features as explanatory variables. Our findings indicate that the likelihood of home bias is caused by both rational and irrational factors. Moreover, we relate home bias to investors' desire to hedge against inflation, sophistication and overconfidence.