We investigate inattention on the part of pension plan participants using a dataset covering savings in Sweden's Premium Pension System. These data permit direct comparison of the investment behaviours of pension and retail mutual fund investors. Unlike retail mutual fund investors, pension...

We examine the daily activity and performance of a large panel of individual investors in Sweden's Premium Pension System in the period 2000 to 2010. We find that active investors outperform passive investors, and that there is a causal effect of fund changes on performance. Chosen funds...