Best Congress Stock Trackers: Capitol Trades, Quiver, Unusual Whales, Official Sources, and Ours

Every congressional stock tracker starts from the same two government databases. What differs is how much a tool verifies, how fast it republishes, whether it covers both chambers, and what it charges. This roundup covers Capitol Trades, Quiver Quantitative, Unusual Whales, the official House and Senate systems, and Yield Theory's own tracker, which we built and which is included here on the same terms.

Every claim below comes from a page each tool publishes. Where a tool does not publish a fact, we say so rather than guess.

How should you judge a congressional trade tracker?

Six questions cover most of what matters. Data source and verification: does the tool link back to the official filing, and does it state how records are parsed and checked? Coverage: does it include both House and Senate filings, and how far back? Lag and refresh: how soon after the Clerk or eFD publishes a filing does the tool show it, and does it display the gap between trade date and filing date? Alerts: can you be notified when a specific member or ticker files? API: is there programmatic access, and at what price? Price: what is free, and what is paid? Two constraints apply to every tool equally. Members may file up to 45 days after a trade under the STOCK Act, so no tracker can show trades in real time; the public record itself is late. And filings report value ranges, not share counts, so every "volume" figure is an estimate built from bands. For the field-by-field details, see how to read congressional disclosures.

The tools below are ordered by how they relate to the official record, starting with the record itself.

Where do official House and Senate filings live?

The government publishes the filings for free, without an account, in two unconnected systems. The House Clerk's Financial Disclosure Reports page cites Section 8 of the STOCK Act as its authority, offers a search of individual reports, and provides year-by-year bulk downloads for 2008 through 2026; Periodic Transaction Reports are PDFs, some of which are scanned images rather than machine-readable text. The Senate's Electronic Financial Disclosure system holds reports for senators, former senators, and Senate candidates filed from 2012 onward; senator reports stay available for six years after leaving office. Before searching, eFD requires you to acknowledge the Ethics in Government Act clause that bars using reports for commercial purposes, credit decisions, or fundraising, with a civil penalty of up to $10,000. Neither system offers alerts, an API, or a merged view. Coverage: House (Clerk) and Senate (eFD), each separately. Lag: filings appear when posted; the Clerk page does not state a posting cadence. Price: free.

The official systems are the verification layer for everything else. If a tracker row cannot be traced to a PDF in one of these two systems, treat it as unverified.

What does Capitol Trades offer?

Capitol Trades is a free site run by 2iQ Research. Its about page says the data is built on "an established and proven process combining automated and manual record collection," that "2iQ's data analysts take great care to ensure that the data we publish is always accurate," and that the site is "free for the public." Coverage spans both chambers; the same page claims "the highest data volume for Senate and Congress representatives," while the footer states that "the historical data available on our website is restricted to the past 3 years." On September 20, 2026 the trades page showed 37,037 trades from 1,815 filings by 211 politicians in that window, with columns for published date, traded date, a "filed after" day count, owner, type, size range, and a reference price. Alerts: a Twitter feed and a weekly newsletter; no per-member or per-ticker alerts are described. API: the site returned "page not found" for /pricing and /faq, so no API or paid tier is published.

The "filed after" column is the most useful thing on the page for a careful reader, because it displays the disclosure lag on every row rather than hiding it. Our Capitol Trades comparison goes deeper.

What does Quiver Quantitative offer?

Quiver Quantitative publishes a Congress Trading dashboard covering both chambers; its most-active list on September 20, 2026 mixed House and Senate members with a trade count and an "estimated trade volume" for each. The page states the data "is parsed from congressional disclosures by Quiver Quantitative" but does not describe a manual verification step or link rows to filings on the dashboard. Refresh: marketing copy says users can react to trades "within moments of being filed," but no cadence is published. Alerts are a premium feature. Website premium pricing is not publicly viewable: the /pricing URL redirects to an account sign-up form, so we cannot report it. The API is priced openly on api.quiverquant.com/pricing: Hobbyist at $30 per month ($25 billed annually) includes Congress Trading and Congress Stock Holdings without commercial rights; Trader is $75 ($62.50 annually) and adds insider and hedge-fund data; Startup, with commercial rights, lists at $250 per month for companies under $1 million in revenue; Enterprise is quote-based.

The API page shows an example response for a Senate trade that includes ReportDate, TransactionDate, Ticker, Range, House, Party, and derived fields such as ExcessReturn. The derived return fields are Quiver's calculations, not disclosed facts.

What does Unusual Whales offer?

Unusual Whales is primarily an options-flow platform with a politics section. Its politics page is titled "Track Congressional & Senate Stock Trades" and shows recent disclosures with trade date, filing date, value range, asset type, and filing-status notes from the form, plus top-trader lists and an annual Congressional Trading Report. According to the pricing page, "politician trade information" is included in all three paid Dashboard & Tools tiers: Retail Basic at $50 per month ($42 billed annually) with 25 custom alerts, Retail Pro at $75 ($63 annually) with unlimited alerts, and Retail Max at $120 ($102 annually). A free account provides "limited data" with 15-minute delayed market data; politician data is not listed among free features. The API is sold separately and excludes the website: API Basic is $150 per month with a 7-day trial and 40,000 requests per day, API Advanced is $375 with unlimited requests, and both include "Congressional and Insider Trades." Commercial plans start at $625 per month billed annually.

Unusual Whales does not publish a verification methodology on the pages we fetched. It historically supplied disclosure data to the NANC and KRUZ ETFs; the funds' July 2026 SEC filing says that arrangement has ended, as covered in our NANC and KRUZ explainer. See also our Unusual Whales comparison.

What does Yield Theory's congressional tracker offer?

This is our tool, so read this section with that in mind. The politician-trades directory and the congressional-trades dataset are built only from the House Clerk's Financial Disclosure Reports index. A scheduled weekday job reads every Periodic Transaction Report listed in the Clerk's 2025 and 2026 indexes, parses the machine-readable PDFs, and publishes a new snapshot only when the filings change. As of the September 20, 2026 snapshot that is 910 filings by 142 members, of which 791 PDFs were machine-readable and produced 10,889 normalized rows; image-only PDFs are excluded rather than OCR-guessed, so affected members' totals are understated and the page says so. Every row keeps the original filing URL, the owner code, the value range, the transaction date, and the filing date, and each member and ticker page shows median filing lag and flags rows filed after the 45-day deadline. Coverage is House-only; Senate eFD filings are not included. There are no alerts and no API. Browsing and CSV or JSON downloads are free.

The trade-offs are clear. We cover one chamber, two filing years, and only text-readable PDFs, and we refresh on weekdays rather than continuously. In exchange, every number on the site can be traced to a PDF the government hosts, and uncertainty is preserved rather than converted into a point estimate. The most-active ranking and ticker index are built from the same rows.

How do the tools compare on each rubric point?

Data source and verification: the House Clerk and Senate eFD are the record. Capitol Trades states an automated-and-manual process with analyst review. Yield Theory links every row to its filing and excludes unreadable PDFs. Quiver and Unusual Whales describe parsing disclosures but publish no verification method. Coverage: Capitol Trades, Quiver, and Unusual Whales cover House and Senate; Capitol Trades limits history to three years; Yield Theory covers the House only for 2025–2026. Lag and refresh: no tool can beat the 45-day statutory window; Capitol Trades and Yield Theory display per-row lag; none publishes a refresh SLA, though Yield Theory states a weekday schedule. Alerts: Unusual Whales sells custom alerts; Quiver lists alerts as premium; Capitol Trades offers a Twitter feed and newsletter; the official sites and Yield Theory have none. API: Quiver from $30 per month, Unusual Whales from $150; none for the others. Price: official sources, Capitol Trades, and Yield Theory are free; Quiver's web premium is unpublished; Unusual Whales starts at $42–50 per month.

The right choice depends on what you need. For Senate coverage you need the eFD, Capitol Trades, Quiver, or Unusual Whales. For programmatic access you are choosing between Quiver and Unusual Whales. For a free, filing-linked House dataset you can download and audit, the Clerk's bulk files or our tracker will do.

Bottom line

No congressional stock tracker is faster than the law allows, because members have up to 45 days to file, and none can turn a disclosed value range into an exact trade size. The official House Clerk and Senate eFD databases are free and authoritative but offer no alerts, API, or merged view. Capitol Trades is free, covers both chambers for three years of history, states an analyst-reviewed process, and shows the filing lag on every row, but publishes no API. Quiver Quantitative covers both chambers and sells an API from $30 per month, though its website premium pricing is only visible after creating an account. Unusual Whales bundles politician data into paid tiers from $42–50 per month with custom alerts, and sells an API from $150 per month. Yield Theory's tracker is free, House-only, filing-linked, and refreshed on weekdays, with no alerts or API. Choose for coverage, transparency about lag and sources, and a price you can justify, then verify anything you act on against the official record.

Sources

Financial Disclosure Reports, Office of the Clerk, U.S. House of Representatives
Electronic Financial Disclosure (eFD) home, U.S. Senate
About us and Trades, Capitol Trades (2iQ Research), viewed September 20, 2026
Congress Trading, API overview, and API pricing, Quiver Quantitative, viewed September 20, 2026
Plans & Pricing and US Politics, Unusual Whales, viewed September 20, 2026
Congressional trades dataset and politician-trades directory, Yield Theory, snapshot generated September 20, 2026
STOCK Act, Public Law 112-105, govinfo.gov

This article is educational and is not investment advice. Yield Theory operates one of the tools reviewed. Prices and features were taken from each provider's public pages on the date shown and may have changed.