Conducting the first study of momentum impact on households' ETF trading behavior, we find that Finnish households are less contrarian when trading benchmark index ETFs than when trading common stocks. Also, their propensity to chase recent positive momentum is higher when purchasing ETFs than...

We introduce a theoretical model of the active fund management industry (AFMI) in which performance and size depend on the AFMI's competitiveness (concentration). Under plausible assumptions, as AFMI's concentration decreases, so do fund managers' incentives for exerting effort in search of...

We introduce an international active fund management model in which competing managers have heterogeneous incentives (effort productivities, costs) for searching domestic/foreign investment opportunities. In equilibrium, the domestic/foreign incentives heterogeneity gives rise to a novel...

We introduce continuous-time rational models of concentration in the active fund management industry (AFMI), where managers with heterogeneous dynamic unobservable abilities compete for investments of risk-neutral or risk-averse investors. Dynamics of managers’ inferred abilities determine...