Best Congress stock-trading trackers in 2026: a fair comparison
Capitol Trades, Quiver Quantitative, Unusual Whales, NANC, Insider Option — every major way to track Congressional stock trades in 2026, honestly compared.
· 9 min read · By Insider Option
Tracking how members of the US Congress trade stocks has gone from a niche academic exercise to a mainstream retail-investing interest in under five years. There are now at least half a dozen serious tools that aggregate STOCK Act filings — each with very different trade-offs. This post compares the most widely used options as of 2026, including our own product Insider Option. We've tried to be fair; if we've misrepresented a competitor, we'll correct it — reach out.
The options
Capitol Trades (free, web)
Operated by 2iQ Research. Probably the most-visited free tracker for Congressional trades. Strengths: completely free, clean UI, near-real-time filings, easy per-politician filtering. Weaknesses: only Congressional trades (no insider / 13F data), no backtesting, no strategy-based aggregation, no alerts in the free tier, no mobile app.
Best for: Casual observers who want to browse the latest filings with zero commitment.
Quiver Quantitative (freemium, web + API)
One of the earliest products in this space, originally developer-focused. Strengths: large data catalog (government-contract awards, corporate lobbying, WSB sentiment, and Congressional trades all in one place), published API. Weaknesses: the free tier is limited; the UI has improved but still feels like a data product rather than a consumer product; no mobile app.
Best for: Developers and quants who want raw data access across multiple alternative datasets.
Unusual Whales (paid, web)
Originally an options-flow tracker that added Congressional trades as a feature. Strengths: excellent at options flow and dark-pool activity, strong community, strong Twitter presence. Weaknesses: options-focused product; Congressional tracking is secondary; no backtesting; no iOS app; learning curve is steep for newcomers.
Best for: Traders who want options flow plus Congressional data in one subscription.
NANC / KRUZ ETFs (brokerage, expense ratio)
These are ETFs, not research tools — but they are a common way retail investors "follow Congress." NANC tracks Democratic Congressional trades; KRUZ tracks Republican. Strengths: truly passive, one-click exposure, tax efficient, brokerage-standard. Weaknesses: expense ratio, no ability to pick specific politicians or filter strategies, no data access, slow to rebalance.
Best for: Investors who want exposure to the theme without doing any manual work.
Insider Option (freemium, web + iOS) — that's us
Insider Option aggregates three disclosure sources — Congressional trades, corporate insider trades (SEC Form 4), and institutional holdings (13F) — and layers backtested strategies on top. Strengths: three data sources in one app, visible backtest numbers, growth calculator, email alerts, iOS app, bilingual English / French. Weaknesses: newer product with a shorter track record than Capitol Trades; the paid tier is required to unlock historical data and unlimited alerts.
Best for: Retail investors who want more than surface-level tracking — specifically, people who want to see how Congressional trades have performed historically, not just what they are.
Feature matrix
| Feature | Capitol Trades | Quiver | Unusual Whales | NANC | Insider Option |
|---|---|---|---|---|---|
| Congressional trades | ✓ | ✓ | ✓ | ✓ | ✓ |
| Insider (Form 4) | — | ✓ | Partial | — | ✓ |
| Institutional (13F) | — | ✓ | — | — | ✓ |
| Backtested strategies | — | Paid | — | N/A | ✓ |
| Growth calculator | — | — | — | — | ✓ |
| Email alerts | Limited | ✓ | ✓ | — | ✓ |
| iOS app | — | — | Partial | Via broker | ✓ |
| Bilingual EN / FR | — | — | — | — | ✓ |
| Free tier | Full product | Limited | — | Brokerage fees only | Core features |
Which one should you use?
- Just want to watch filings? Capitol Trades. Free, clean, does one thing well.
- Developer who wants raw data? Quiver Quantitative, especially if you care about alt-data beyond Congress.
- Options trader first, Congress watcher second? Unusual Whales — options flow is their strength.
- Want one-click passive exposure? NANC (for Dem) or KRUZ (for Republican), understanding the expense ratio.
- Retail investor who wants strategies + alerts + mobile? Our own Insider Option. Biased, but it's the product we built because the above didn't quite solve this use case.
A note on bias
We obviously have an interest in recommending our own product. We've tried to write this comparison the way a reader we respected would want it written — if you find something we got wrong about a competitor, please tell us at our contact page and we'll update this post.
This post is informational only and not investment advice. Product comparisons reflect our understanding at the time of writing and may be out of date. See disclaimer.
Frequently asked questions
- What is the best free Congress stock trading tracker?
- The official House and Senate disclosure portals are free, complete, and authoritative, but unparsed. Among third-party tools, several including Insider Option offer free browsing of parsed filings with alerts and history reserved for paid tiers.
- Do any Congress trackers offer real-time alerts?
- Several send alerts within minutes of a filing being published. No tracker can be faster than the filing itself, which the STOCK Act allows to be made up to 45 days after the trade.
Keep reading
- How to track Congress stock trades (5 methods, from free to instant) — A practical walkthrough of every way to follow Congressional stock trades — the official House and Senate portals, bulk data, RSS, ETFs, and trackers — with the trade-offs of each.
- The "Pelosi ETF": what NANC and KRUZ actually hold — Two ETFs track the disclosed stock holdings of Democratic and Republican members of Congress. Here's how NANC and KRUZ are built, what they can and can't do, and whether they beat doing it yourself.
- Does copying Congressional stock trades actually work? — An honest look at whether following politicians' disclosed trades produces excess returns — what the academic research found, why the 45-day lag matters so much, and how to test it yourself.