Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Behavioural finance literature argues that stock issuance contains information on equity valuation. If so, does it predict the cross-section of both country and industry stock returns? To answer this question, we investigate data from 68 markets from 1976 to 2022. We find that composite equity issuance negatively correlates with future aggregate stock returns. An equal-weighted quintile of countries (industries) with the highest issuance underperforms those with the lowest by 0.34% (0.58%) per month. Established risk factors and other anomalies cannot subsume this cross-sectional pattern. Furthermore, the effect remains robust to many considerations. This documented issuance anomaly paves the way for an exploitable international investment strategy.