Share Issuance Anomaly
In plain terms
Companies that have dramatically increased their share count over 5 years tend to underperform (they issued shares when overvalued). Companies that have shrunk their share count via buybacks tend to outperform. Trade the top/bottom deciles of 5y share-count growth.
How it works
Firms with high trailing-5-year share-issuance growth significantly underperform low-issuance (buyback-heavy) firms. Combines (i) management timing equity issuance when overvalued and (ii) the external-financing anomaly (Bradshaw-Richardson-Sloan 2006).
Data dependencies
- Daily prices
Adjusted-close OHLCV for every US-listed ticker; primary price feed.
- Key metrics
A data feed this strategy reads, refreshed on its normal schedule.
Expected edge
- Reported return
- +/-5-8% over 12mo
- Tested over
- T+1 to T+252d
Pontiff-Woodgate 2008; ~5-8% gross over 12mo on top/bottom decile spread.
Related families
Companies that grow their balance sheet aggressively (lots of new assets, M&A, capex spikes) tend to under-deliver the next 1-3 years — the market trusted the empire-building story too much. Bet on the boring low-growth names instead.
Companies that announce (or quietly start) share buybacks beat the market by 3-4% over the next year, strongest in beaten-down value names.
Stocks with high combined dividend+buyback yield outperform — beats either signal alone.
Explore Share Issuance Anomaly on alphactor.ai
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