Insider Clusters
When several company insiders buy the same stock within days of each other.
Recording · published after review
The rules
- Insiders
- 3 or more, distinct people
- Trades
- Open-market purchases only
- Window
- Within 10 trading days
- Size
- $250,000 or more in total
- Companies
- Micro, small and mid cap
- Liquidity
- Thinly traded stocks excluded
The full method, the research behind it and its limitations are in the Insider clusters explainer.
How it works
- 1
Insiders file
When a company’s officers or directors buy its stock, they must report it to the SEC on Form 4 within two business days.
- 2
The pilot reads every filing
Each purchase is checked against the rules below. Grants, option exercises and pre-planned trades are left out.
- 3
A cluster is detected
When three or more insiders buy within ten trading days, the pilot records a signal with the filings behind it.
- 4
Reviewed, then published
Signals are reviewed before they are published. Free accounts see each one 48 hours after it is published.
Issuers
The companies this pilot has published a signal on. A list of detections, not a portfolio.
Recording since 24 Sep 2026.
Signals appear here once publishing begins.
Released signals are shown to signed-in readers. Sign in
Signal feed
Every signal this pilot has published, newest first. Each one opens onto the filings behind it.
Nothing published yet.
Track record
Every published signal is measured the same way: from the first New York open after it was published, against SPY, at 5, 20 and 40 trading days. Every signal counts, including the ones that fell.
Nothing measured yet.
Measurements appear here once published signals are old enough to measure.