When a CEO buys stock on the open market with their own money, it's one of the strongest legal buy signals in the market. Flow Antenna captures every SEC Form 4 filing and scores it by conviction — C-suite purchases score highest.
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Corporate insider trading — legally disclosed purchases and sales by executives, directors, and major shareholders — is one of the most reliable leading indicators in the market. Unlike institutional filings that lag by quarters, Form 4 disclosures must be filed within 2 business days. When a CEO buys shares on the open market with personal cash (not options, not grants), they're putting real money behind a belief the stock is undervalued. Academic studies show insider open-market purchases outperform the market by 6–8% in the following 12 months.
Corporate insiders must file Form 4 within 2 business days. Flow Antenna monitors EDGAR continuously and captures new filings in real time.
We score on: role seniority (CEO > VP), purchase type (open market > options exercise), size vs their median, and clustering (2+ insiders = much higher score).
HIGH-conviction insider buys trigger instant email alerts with conviction score, actor breakdown, and Quinn AI narrative.
Insiders can't legally trade on material non-public information — but they trade based on fundamentals, competitive dynamics, and pipeline. When the CFO makes their largest-ever open-market purchase before a product launch, that's not noise. Flow Antenna's insider cluster detector fires when 2+ insiders at the same company buy within 30 days — historically the highest-accuracy pattern in our signal library.
Flow Antenna monitors all 535 congressional disclosures 24/7. When a new filing hits, we score it instantly and send you an alert with our conviction rating and Quinn AI analysis.
Free plan includes congressional trades · No credit card required
Yes. Form 4 filings are public SEC records. The law prohibits trading on material non-public information — but the disclosures are public and legal to track. Flow Antenna aggregates these public filings.
Open-market purchases are the highest-conviction signal — the executive spends personal cash at market price. Options exercises and RSU vesting are often automatic. Flow Antenna weights open-market buys significantly higher.
SEC EDGAR publishes Form 4 filings as they're accepted. Flow Antenna queries the EDGAR RSS feed every 15 minutes and processes new filings immediately — typically alerting within 15–30 minutes.
More signal types: Dark Pool · Options Flow · Congress Trades