Published online by Cambridge University Press: 11 July 2022
We examine diseconomies of scale for two different investment approaches: quantitative and fundamental. Using separate account (SA) data where the investment approach is self-identified, we find that fundamental SAs exhibit greater diseconomies of scale than quantitative SAs. Looking at liquidity costs, we find that quantitative SAs hold more diversified portfolios of higher liquidity stocks than fundamental SAs, thereby reducing their expected liquidity costs. We also find that consistent with lower information processing/hierarchy costs, the speed of information diffusion is higher for quant SAs. Accounting for these differences helps to explain the differences in diseconomies of scale.
We thank an anonymous referee, Hendrik Bessembinder (the editor), Miguel Ferreira, Wayne Ferson, Juan Pedro Gomez, Viktoriya Lantushenko, Pedro Matos, John O’Brien, Melissa Prado, Otto Randl, Jue Ren, Esad Smajlbegovic, Günter Strobl, Z. Jay Wang, Mungo Wilson (a referee), Rafael Zambrana and participants of the 2017 Southern Finance Association conference, the 2018 Eastern Finance Association conference, the 2018 Financial Management Association European conference, 2019 European Retail Investment conference as well as seminar participants at the Darden School of Business, McIntire School of Commerce, Nova Universidade de Lisboa, University of Hagen, and the Frankfurt School of Finance & Management for very helpful comments and suggestions. All remaining errors are our own.