The Best Congressional Trading Trackers in 2026: An Honest Comparison

If you want to track what US politicians trade in 2026, the short answer: Quiver Quantitative has the deepest congressional alt-data catalog and history, Unusual Whales pairs congress tracking with options flow and alerts, Capitol Trades is the cleanest free way to browse, and SentiSense (that's us) is the pick when you want congressional trades as structured API data an app or AI agent can build on, served next to sentiment and market context. All four read the same official filings; the differences are speed, structure, and what surrounds each trade.

Full disclosure: SentiSense is our product, so read our row with that in mind. We link to every tracker here and say where each one is genuinely better.

Where does congressional trading data actually come from?

One source, no exceptions: the disclosures members of Congress file under the STOCK Act of 2012. House filings publish through the House Clerk's financial disclosure portal, Senate filings through the Senate's electronic financial disclosure (eFD) system. Members can report a trade up to 45 days after making it, amounts appear as ranges rather than exact figures, and some filings still arrive as scanned paper documents.

Every tracker on this page, ours included, is a pipeline on top of those two portals. That means the real comparison is not who has the data, it is who parses it fastest and cleanest (amendments, scanned filings, and asset descriptions that do not map neatly to a ticker are where pipelines quietly diverge), and what context surrounds a trade once it is normalized.

Quiver Quantitative: best for congressional alt-data depth

Quiver Quantitative made congressional trading a retail category, and it shows: years of accumulated history, per-politician pages with computed returns, and a wide alternative-data catalog around it (lobbying, government contracts, insider activity).

Where it wins: history and breadth. If you want to study congressional trading as a dataset, this is the most complete public archive.

Where it falls short: the surrounding market context is mention counts and trend lines rather than scored sentiment, and the deeper datasets sit behind paid tiers.

Unusual Whales: best for alerts and options pairing

Unusual Whales built its brand on options flow and extended it to congressional trades, with an active community and fast alerting when new filings drop.

Where it wins: notification speed and the combination with options data. If your question is "alert me when a politician files," this is the strongest answer.

Where it falls short: it is a web platform first. If you are building software rather than watching dashboards, the data access story is thinner than the product story.

Capitol Trades: best free browsing

Capitol Trades, from data firm 2iQ Research, is a clean, fast, free site for browsing recent congressional trades by politician, ticker, or committee.

Where it wins: zero cost and a genuinely pleasant interface. For a quick "what did this member buy" lookup, start here.

Where it falls short: browsing, not building. There is no public API, so the data stays on their pages.

SentiSense: best for builders and AI agents

SentiSense ingests House Clerk and Senate eFD filings directly, normalizes each trade to a ticker and a tracked politician entity, and serves the result through the same API that also covers sentiment scores, insider activity, institutional flows, and fundamentals for the same tickers, so a builder can pull a trade's market context with the next call. There are Python and Node SDKs, an MCP connector so Claude and other agent tools can query it directly, and an installable agent skill. The API is free to try, and the congress trades API post has the endpoints and a Python example.

Where we fall short: congressional data is one dataset among several for us, not the flagship brand it is at Quiver, and we do not have an options flow terminal or a community product. US markets only.

Where we win: if the consumer of this data is code, a dashboard you are building, a research script, or an AI agent that reasons across datasets, structured trades plus surrounding signal through one documented API is the combination the web-first trackers do not offer.

What can congressional trading data actually tell you?

Less than the headlines imply, and it is worth being honest about why: the 45-day reporting window means you are always looking at the past, and disclosed ranges blur position size. Where the data earns its keep is in aggregate: which sectors members are rotating into, committee-adjacent activity worth a closer look, and long-run patterns by member. It is a research input, not a trade signal, and nothing here is investment advice.

How to choose

1. Studying the history? Quiver.
2. Want alerts the moment filings drop? Unusual Whales.
3. Just browsing? Capitol Trades, it's free.
4. Building an app, a model, or an agent? That's the gap we built for.

No sign-up required to look: browse the live congressional trades tracker →