Best Insider Trading Trackers 2026: InsiderAct vs OpenInsider vs TIKR

1. InsiderAct — Best for Signal-First Research

InsiderAct is built around the idea that most insider transactions are noise — option exercises, restricted stock vesting, tax-withholding sales — and that finding the meaningful signals should not require hours of manual filtering.

The Signals page surfaces four pre-filtered patterns: cluster buying (two or more insiders buying independently within 14 days), large open-market purchases ($100k+), buying-the-dip (purchases during price declines), and blue-chip insider buying (large-cap company purchases). All of these focus exclusively on transaction code “P” — voluntary open-market purchases with personal cash.

• ✓Pre-filtered signals — no manual Form 4 parsing required
• ✓Cluster buy detection across all ~10,000 Form 4 filers
• ✓Watchlist alerts when insiders trade in your tracked companies
• ✓Stock chart overlaid with insider transaction markers
• ✗Free tier limited to 7-day history; 30 days requires Pro
• ✗Focused on U.S.-listed companies only

Best for: Retail investors who want to track CEO and executive buying without wading through raw Form 4 XML. The Signals page is the fastest way to see what is happening across the whole market right now.

2. OpenInsider — Best Free Screener for Raw Data

OpenInsider is a free tool that ingests SEC Form 4 data and exposes it through a highly customizable screening interface. You can filter by transaction type, dollar amount, shares, insider role, filing date, and more — and export the results.

It does not automatically detect patterns like cluster buying or buying-the-dip. You need to know what you are looking for and build your own filters. For experienced investors who want maximum flexibility without paying for a subscription, OpenInsider is the strongest free option.

• ✓Completely free — no account required
• ✓Highly flexible screening: role, amount, type, date
• ✓Covers full Form 4 history, not just recent data
• ✗No automatic signal detection
• ✗No watchlist alerts or notifications
• ✗Interface is utilitarian — no charts or context

Best for: Investors who already have a research framework and need a free, flexible screener to find specific transaction patterns. The learning curve is steeper than InsiderAct but the depth is unmatched for a free tool.

3. TIKR — Best for Combining Insider Data with Fundamentals

TIKR is a full-stack financial data platform: earnings estimates, financials, valuation, analyst ratings — and insider transactions. It is not primarily an insider trading tool, but if you already use TIKR for fundamental analysis, having insider data in the same interface is a practical advantage.

The insider data on TIKR mirrors what is in SEC EDGAR — it shows you who bought and sold, how much, and when — but it does not aggregate or detect patterns like cluster buying. Think of it as a convenient companion to your fundamental research, not a dedicated signal screener.

• ✓Insider data alongside financials, estimates, valuation in one place
• ✓Good for company-level deep-dive research
• ✗No pattern detection (cluster buying, buying-the-dip)
• ✗Paid plans required for full data access ($16–40/month)
• ✗Not designed for market-wide insider signal screening

Best for: Investors doing deep fundamental research on a specific company who want insider activity as one input among many, not as the primary screen.

4. SEC EDGAR — Best for Verification and Compliance

SEC EDGAR is the primary source — every Form 4 filing ultimately lives here. It is authoritative, free, and comprehensive. But it is designed for regulatory compliance, not investment research. Finding a specific company's Form 4 history requires navigating to the company search, selecting Form Type “4”, and then reading individual XML documents.

All three tools above ingest their data from EDGAR. Use EDGAR when you need to verify a specific transaction against the original filing, or when you need historical data going back before any of these platforms existed.

Best for: Verifying a transaction you found elsewhere, or accessing regulatory-grade filing documents for compliance or legal purposes.

Which tool should you use?

For most retail investors starting out with insider trading data, the recommended workflow is:

• 1
  Discover with InsiderAct: Use the Signals page to see cluster buys and large purchases happening right now. This requires no prior knowledge of Form 4 structure.
• 2
  Screen deeper with OpenInsider: Once you identify an interesting signal, use OpenInsider to see the full insider history for that company — including older transactions and smaller purchases that did not hit the signal threshold.
• 3
  Verify with SEC EDGAR: Cross-reference any transaction you plan to act on against the original Form 4 filing on EDGAR to confirm the details.