Cheapest Insider Trading Tracker (2026): Free and Paid Options Compared

OpenInsider — Best Free Screener

OpenInsider is completely free, requires no account, and covers the full Form 4 filing history from SEC EDGAR. The screening interface lets you filter by transaction type, dollar amount, number of shares, insider role (CEO, CFO, director), and filing date. You can export results and build custom watchlists.

The limitation is the absence of pattern detection. OpenInsider will not automatically flag when multiple insiders are buying the same stock within a short window — you need to identify that manually by sorting and filtering results yourself. For investors who have the time and know-how to do that filtering, OpenInsider is the best free tool available.

Best for: Experienced investors who prefer maximum flexibility over automated signal detection, and do not want to pay a monthly subscription.

SEC EDGAR — Authoritative Primary Source

SEC EDGAR is where all Form 4 filings are submitted and stored. Every tool in this comparison ultimately draws its data from EDGAR. The platform is free and comprehensive, but it is designed for regulatory access, not investment research. Finding a company's insider history requires navigating the full-text search, filtering for Form Type “4,” and reading individual XML documents.

Best for: Verifying a specific transaction against the original filing, or accessing the full official record for compliance purposes. Not designed for discovery or screening.

InsiderAct — $9.99/month

InsiderAct is the lowest-priced paid option that includes automatic signal detection. The free tier provides 7 days of transaction history with full access to cluster buy, large purchase, buying-the-dip, and blue-chip signals, plus watchlist alerts. The $9.99/month Pro plan extends history to 30 days and beyond.

The signal detection layer is what differentiates InsiderAct from free tools: instead of browsing a raw transaction list, the Signals page shows you which patterns are occurring across the entire market right now, with each signal categorized and explained. The stock chart overlays insider transactions on price history for immediate context.

Best for: Investors who want automatic cluster buy detection and buying-the-dip signals at the lowest available price point.

InsiderScreener — ~$24/month

InsiderScreener covers 16 markets globally, which is the primary justification for the higher price compared to InsiderAct. It includes cluster buy detection, daily email reports, and custom alerts. For US-only investors, the 60% price premium over InsiderAct buys international coverage that most US retail investors do not use.

Best for: Investors with a multi-market mandate who need European or Asian insider data normalized alongside US coverage.

Finviz Elite — $25/month

Finviz Elite's insider trading data is part of a broader package that also includes real-time stock screening, advanced chart patterns, news feeds, and backtesting. The $25/month price covers the full platform — insider data alone does not justify it. If you already use Finviz's fundamental or technical screener, upgrading to Elite makes the insider data real-time as a secondary benefit. If you only care about insider signals, this is not the most cost-effective option.

Best for: Existing Finviz users who want real-time insider data as part of their existing screening workflow.

MarketBeat Premium — ~$33/month ($399/year)

MarketBeat's insider trading component is one feature within a larger platform covering analyst ratings, earnings calendars, dividend data, and market news. At $399/year, it is the most expensive option in this comparison. The value proposition only holds if you actively use the full suite — paying for MarketBeat primarily to access insider data is not cost-effective when lower-priced alternatives cover the same Form 4 filings with better signal detection.

Best for: Investors who use MarketBeat as their primary research dashboard and need insider data alongside analyst ratings and earnings tools.