This paper documents that small-cap mutual funds allocate on average 27% of their portfolio to mid- and large-cap stocks. We find that larger and older small-cap funds are more likely to hold mid- and large-cap stocks, consistent with funds straying from their objective over time. Funds that invest heavily in mid- and large-cap stocks expose their investors to unanticipated risks but investors do not experience higher abnormal returns or performance persistence overall. These funds did outperform their peers by 3% annually in the most recent period between January 2003 and March 2010.

We conduct a series of forecasting experiments to examine how people update their beliefs upon observing others’ forecasts. Subjects exhibit “cursedness,” that is, a propensity to underestimate the link between others’ forecasts and others’ information, which causes subjects to underreact. The behavior of sophisticated subjects is not affected by the framing of information, but unsophisticated subjects switch from underreaction to overreaction when they are only provided qualitative (rather than quantitative) forecast information. Our results have important implications for the way that financial analysts aggregate information and the way that financial institutions present forecasts to their clients.

This paper argues that a lesser known yet economically significant tax-deferral feature of ETFs’ security design is crucial to their success. By relying on the in-kind redemption exemption, authorized participants help ETFs avoid distributing capital gains and reduce their tax overhang, partly by deploying heartbeat trades. We estimate that the ETF tax efficiency has increased long-term investors’ after-tax returns by 1.05% per year relative to mutual funds in recent years. Exploiting cross-sectional and time-series variations in investors’ tax burden, we show that tax efficiency is a significant driver of capital migration by high-net-worth investors from mutual funds into ETFs.