1
8insiders
+$40.3Kcombined
+2.0%since last buy
Insider cluster buys
Stocks where two or more insiders bought on the open market within the last 14 days. One insider buying can mean many things — several buying together is the strongest conviction signal in insider data. We scan every Form 4 filed market-wide, not just the newest filings.
2
5insiders
+$353.6Kcombined
+1.1%since last buy
3
2insiders
+$294.7Kcombined
+5.8%since last buy
4
2insiders
+$13.6Kcombined
+0.0%since last buy
Ranked by number of distinct open-market buyers, then combined value. Window: last 14 days, minimum $1,000 per trade. The market-wide scan accumulates through the day, so new clusters can appear between visits.
Frequently asked questions
What is a cluster buy?
A cluster buy is when two or more insiders at the same company purchase shares on the open market within a short window. Because each insider independently decided to put their own money in, clusters are widely considered the highest-signal pattern in insider-trading data — far stronger than a single purchase.
How do you find clusters?
We scan the SEC's daily filing indexes — every Form 4 filed market-wide, not just the most recent — find companies with multiple insider filings in the window, then parse those filings to confirm at least two distinct insiders made genuine open-market purchases (transaction code P).
Why are there so few clusters?
Because they're genuinely rare. Most insider activity is grants, option exercises, and routine sales; multiple independent open-market buys at one company within two weeks happens only a handful of times in a typical month. That rarity is exactly what makes the signal interesting.
Should I buy stocks on this list?
Not automatically. Cluster buying is context, not a recommendation — insiders can be early, wrong, or buying for reasons that don't apply to you. InsiderSource is an information tool, not investment advice.