When a Fortune 500 CEO spends their own money buying shares in their own company, that’s a signal worth tracking. We parse every SEC Form 4 filing — covering NYSE, NASDAQ, and NYSE ARCA — into one searchable dashboard updated every 10 minutes during market hours.
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Under Section 16(a) of the Securities Exchange Act, corporate officers, directors, and shareholders owning more than 10% of a company must report their transactions to the SEC within two business days. These filings — known as Form 4 — are publicly available through the EDGAR database and represent one of the most actionable signals in financial markets.
Academic research consistently shows that insider purchases in the US earn abnormal returns of over 6% per year, with half of those gains accruing within the first month. The US market offers the deepest, most liquid insider trading data in the world — covering thousands of NYSE and NASDAQ-listed companies from mega-caps to small-caps.
Not all Form 4 filings represent genuine conviction signals. We exclude options exercises, stock awards, gifts, and other non-market transactions. We also filter out pre-planned 10b5-1 trades — automatic, scheduled transactions that carry no real-time signal about an insider’s view on their company. Only open-market purchases (code P) and sales (code S) above the minimum value threshold make it to the dashboard. The result: a clean feed of the trades that actually matter.
The Securities and Exchange Commission (SEC) is the primary federal regulator of the US securities markets. Established in 1934, the SEC oversees all publicly traded companies in the United States. Its EDGAR (Electronic Data Gathering, Analysis, and Retrieval) system provides free public access to corporate filings, including the Form 4 insider transaction reports we parse.
Unlike most European regulators where data is published once or twice daily, SEC EDGAR publishes Form 4 filings as they arrive. Our scraper checks for new filings every 10 minutes during US market hours (Mon–Fri, approximately 6 AM – 10 PM ET), giving you near real-time visibility into what insiders are doing.
Our Top Insiders feature ranks US corporate insiders by their post-purchase stock performance. Track which CEOs, CFOs, and directors have the best track record of buying before share price increases — with 1-month, 3-month, 6-month, and 12-month return windows.
When three or more insiders at the same company buy within a 60-day window, that’s a cluster buy — one of the strongest insider signals in academic literature. We automatically detect these patterns across all US companies and highlight them in the dashboard.
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SEC Form 4 data updated every 10 minutes — the fastest insider signal available.
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