Insider Trading Leaderboards
Ranked snapshots of the most consequential insider activity over rolling time windows — pure data, no editorialising.
Frequently asked questions
What does "Cluster Buying" mean?
Cluster buying occurs when two or more insiders at the same company file open-market purchase (code P) Form 4s within the same rolling window. It is widely regarded as one of the strongest bullish signals in Form 4 analysis because it requires independent conviction from multiple people with asymmetric information about their own company.
How are the leaderboards ranked?
Rankings are deterministic and computed from raw Form 4 data: Top Buys and Top Sells rank by aggregate open-market dollar value (codes P and S respectively); Cluster Buying ranks by number of unique insiders plus total dollar value; Most Active Insiders ranks by total transaction count. No editorial judgment is applied.
How often is the data refreshed?
Form 4 filings are parsed as soon as they appear on EDGAR — typically within a few hours of submission. Leaderboard rankings are recalculated with each ingestion cycle so you are always seeing the most recent publicly available data.
Do the dollar totals include grants and option exercises?
No. Only open-market transactions — code P (purchase) and code S (sale) — contribute to dollar-value rankings. Grants (A), tax withholding surrenders (F), option exercises (M/X), and gifts (G) are excluded because they have no open-market cash price and would distort the signal.