Filings, Insiders & OwnershipExtended setexperimental liveNew
Insider-Sale Overhang
Updated dailyData needs: mediumshort only
paper
2022
Source
Extends insider-sale and restricted-share overhang literature using SEC Form 144 e-filings.
Read the paper →
In plain terms
When insiders file large planned-sale notices, we short the issuer for the next few weeks.
How it works
Form 144 notices reveal planned restricted/control-share sales. Large notices can create supply overhang before actual Form 4 execution appears.
Live results
6 times picked on its own · 20 times inside a blend (13 beat the stock) · updated 2026-06-06This strategy is a frequent ingredient in blends that combine a few strategies on one stock. It has contributed to 20 such blended picks (13 of which beat simply holding the stock). Picking it on its own is only one of the ways it shows up.
How its picks scored vs. buy & hold
Each pick is graded on a recent year it was never tuned on, against simply owning the same stock
Where its edge concentrates
Share of picks in each company-size group that beat buy & hold
How often it trades
Active vs. patient. Bars on the left mean it waits for rare setups; bars on the right mean it trades often
Return vs. buy & hold
How much each pick beat or trailed simply owning the stock over the test year (extreme microcap moves trimmed)
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Data dependencies
- Daily prices
Adjusted-close OHLCV for every US-listed ticker; primary price feed.
- SEC form 144 filings
SEC Form 144 planned-sale notices, parsed from EDGAR structured filings.
Expected edge
- Reported return
- untested - internal
- Tested over
- T+1 to T+60d
Untested internal filing family; target 50-200 bps over 10-60d.
Example tickers where this is likely to fire
Illustrative only, the signal fires based on the live data, not a fixed list.
Related families
Explore Insider-Sale Overhang on alphactor.ai
See which tickers this family is currently firing on, with live signals and rankings.