Best insider trading trackers in 2026
Insider filings are public, but reading them well means seeing clusters and quarter-over-quarter change — not raw feeds. Here’s what a good tracker does.
The short answer
- Seeking Alpha
- if you want insider activity alongside research articles and quant ratings.
- Koyfin
- if you want filings context inside a broad market-data dashboard.
- Tradune
- if you want SEC Form 4 cluster detection and 13F deltas linked to EDGAR, overlaid on the stocks you own — free, and free to read without an account.
Not a ranking and not an award — each line is the need that tool is the right answer for, checked against its own public plans as of October 2026.
How to choose a insider trading tracker
Cluster detection
A single insider buy is noise; several insiders buying in a short window is the signal worth investigating.
13F institutional ownership
Seeing which funds add or exit, quarter over quarter, adds context — with the right staleness caveats.
Linked to the source
Every figure should link back to the original SEC EDGAR filing so you can check it.
Tied to your holdings
Insider activity is most useful overlaid on the stocks you actually own or watch.
The options, honestly
No fabricated ratings — just what each tool is good at, so you can match one to your needs.
| Tool | Price | Strongest at | Where it stops |
|---|---|---|---|
| Tradune | Free right now | SEC Form 4 cluster detection and 13F deltas linked to EDGAR, overlaid on the stocks you own | US SEC filings only — no non-US insider-disclosure regimes |
| Seeking Alpha | $299/yr (Premium) | Huge library of research articles and differing opinions | No VaR-style portfolio risk analytics or optimizer found |
| Koyfin | Free / $39–$79/mo | Broad market, analyst-estimate and macro data coverage | Portfolio risk metrics are drawdown and exposure based; no VaR workflow found |
Tradune detects SEC Form 4 cluster buys, surfaces 13F institutional ownership with quarter-over-quarter deltas linked to EDGAR, and can push insider-radar alerts to Telegram — all keyless and free right now.
See the featureSeeking Alpha
$299/yr (Premium)Seeking Alpha combines crowd-sourced research articles with quant ratings and analyst coverage — strong for reading differing views on a stock.
Best for: reading a wide range of research opinions and quant ratings before you buy.
Tradune vs Seeking AlphaKoyfin
Free / $39–$79/moKoyfin is a Bloomberg-lite dashboard for market data, charts, analyst estimates and macro — popular with investors who want broad coverage in one screen.
Best for: broad market data, macro and analyst estimates in a flexible dashboard, plus model portfolios and advisor client-portfolio tools.
Tradune vs KoyfinOptions and pricing reflect public plans as of October 2026 and may have changed — verify on each provider’s site. This is a buying guide, not a ranked review.
Frequently asked
What is the best insider trading tracker?
The best ones surface cluster buys and 13F changes linked to the SEC source, tied to your holdings. Tradune does this keyless from SEC EDGAR.
Is insider buying a reliable signal?
It’s a signal to investigate, not a command. Cluster buying (several insiders at once) carries more information than a single trade — but always do your own research.
Try Tradune free
Free for everyone right now · no card · nothing to buy. See how your own insider trading tracker works against your real holdings.
This guide is for educational purposes only and is not investment advice or an endorsement. Third-party names are trademarks of their owners; details reflect public plans as of October 2026. Always verify current features and pricing yourself.