Insider buying cluster alerts

The most reliable insider signal isn't a single buy — it's a cluster: multiple insiders at the same company buying within a short window. It's also one of the hardest things to monitor manually.

Why clusters are the only insider signal that matters

A single insider buy is noisy. Could be a planned vesting purchase, could be symbolic. A cluster — three or four insiders buying within thirty days — is different. It usually means the people closest to the business are seeing something the market hasn't priced in yet.

Academic studies consistently find that clusters of insider buys outperform the market over the following 6 to 12 months. Single buys mostly don't.

Why this is hard to monitor without automation

Form 4 filings hit the SEC EDGAR system in real time, but you'd need to:

• Watch every Form 4 across thousands of tickers
• Group filings by ticker and rolling time window
• Filter out 10b5-1 plan transactions (which are pre-scheduled, not discretionary)
• Filter out option exercises (which aren't real "buys")
• Surface only the clusters that meet your threshold

How Tickerbot does it

Tickerbot ingests SEC Form 4 filings and tags each transaction by type, insider role, and discretionary status.

Filtering for higher-conviction signals

Variants worth setting up

• "Insider buying clusters in any small-cap under $2B market cap"
• "Multiple insider buys on a stock that's also down more than 20% YTD"
• "Single CEO open-market buy of more than $1M in any ticker"
• "Insider buying cluster on a stock with a recent analyst downgrade" (insider/analyst disagreement)