The paper discovers that firm complexity is negatively priced in cross-section. High/low-complexity conglomerates have 35-50/20-28 bp per month more negative five-factor Fama and French (2015) alphas than single-segment firms, and this effect is stronger in subsamples with low institutional...

We show that the post earnings announcement drift (PEAD) is stronger for conglomerates thansingle-segment firms. Conglomerates, on average, are larger than single segment firms, so it isunlikely that limits-to-arbitrage drive the difference in PEAD. Rather, we hypothesize that marketparticipants...