In April 2012, after months of public pressure and a viral CBS 60 Minutes report, President Obama signed the Stop Trading on Congressional Knowledge Act — the STOCK Act — into law. The signing ceremony was brief. The applause was bipartisan. And for a moment, it looked like a genuine accountability reform.
The law did two things. First, it made explicit what many assumed was already illegal: that members of Congress cannot trade stocks using non-public information they gain through their official duties. Second, and more consequently for investors, it required those members to publicly disclose every stock trade over $1,000 within 45 days of the transaction.
That second requirement created the database you're reading right now.
What the STOCK Act Actually Requires
Every member of the Senate and House of Representatives must file a Periodic Transaction Report (PTR) for each covered transaction. A covered transaction is any purchase, sale, or exchange of stocks, bonds, or other securities with a value above $1,000 — including trades made by their spouse and dependent children.
The disclosure must happen within 45 days of the transaction date. In practice, this means:
- A senator buys $50,000 in semiconductor stocks on June 1
- The disclosure must be filed by July 16
- The public can see the filing once it's submitted
Each PTR includes:
- The member's name and chamber (House or Senate)
- The transaction date (when the trade actually happened)
- The disclosure date (when the filing was submitted)
- The ticker symbol and asset name
- The transaction type (Purchase, Sale, Sale Partial, Exchange)
- The amount range — not an exact figure, but a bracket like "$15,001 – $50,000" or "$100,001 – $250,000"
The amount is reported as a range because members aren't required to disclose exact dollar values. The ranges are wide enough that you rarely know precisely how much was traded.
How to Read a PTR Filing
When you look at a congressional trade disclosure, you'll see fields like this:
| Field | Example |
|---|---|
| Transaction Date | 05/14/2026 |
| Disclosure Date | 06/12/2026 |
| Ticker | NVDA |
| Asset Type | Stock |
| Type | Purchase |
| Amount | $50,001 – $100,000 |
The disclosure delay — the gap between the transaction and the filing — varies widely by member. Some file within a week. Others routinely take the full 45 days. A few push past the deadline and pay the $200 fine.
The delay matters if you're trying to act on the information. By the time a trade is disclosed, the member has already held the position for days or weeks. The market may have already moved.
The $200 Fine Problem
The STOCK Act's enforcement mechanism has a well-documented weakness: the penalty for late disclosure is just $200.
For a member of Congress who just traded $250,000 in a single stock, a $200 fine is not a deterrent — it's a rounding error. Late filings are common, and the consequences are minimal.
Several reform proposals have circulated since 2012, including increasing the fine to $10,000 or requiring trades to be placed in a blind trust. None have passed. The $200 penalty remains the only consequence for non-compliance.
What the STOCK Act Doesn't Cover
The law has meaningful gaps that critics have pointed out for years:
No blind trust requirement. Members can continue managing their own portfolios and trading individual stocks. Only a handful of members voluntarily place assets in blind trusts.
45-day lag. The disclosure window is long enough that any trading advantage from material non-public information is largely realized before the public sees the filing. The law prohibits the trade but can't unwind it.
No enforcement body. The STOCK Act relies on the House and Senate ethics committees for enforcement — committees that historically move slowly and rarely impose serious consequences on colleagues.
Spotty compliance. Studies have repeatedly found that hundreds of members file late or not at all in a given year, with total penalties collected running to a few thousand dollars.
Why the Disclosures Still Matter
Despite these limitations, the STOCK Act disclosures are genuinely useful — just not in the way the law's critics assume.
The value isn't that members are trading on secret information. The value is that you can observe where experienced policymakers are putting real money at stake. A senator who sits on the Armed Services Committee and consistently buys defense contractors is making a bet with their own capital. A representative on the Banking Committee who purchases regional bank stocks a week before a regulatory announcement is leaving a visible trail.
The disclosures also reveal patterns at scale. When multiple members from different parties and committees begin buying the same sector simultaneously, that's a data point worth tracking — not because they've all conspired, but because they're all responding to the same policy environment.
That's what Capitol Trader tracks: the aggregate pattern of what Congress is buying, selling, and holding, updated daily from official filings.
How to Find Congressional Disclosures Yourself
Official government disclosure portals:
- Senate: efdsearch.senate.gov — Searchable database of all Senate financial disclosure reports
- House: disclosures-clerk.house.gov — House Clerk financial disclosure portal
Both are public and free. They're also slow, require clicking through each individual filing, and give you no aggregate view of trading patterns.
Capitol Trader pulls from these sources and organizes the data into searchable profiles for each member, ticker-level activity pages, and a ranked leaderboard of the most active traders.
The STOCK Act was a first step. Whether it went far enough is a legitimate policy debate. What it unquestionably did was create the most comprehensive public record of elected officials' stock activity in U.S. history — and that data is available to everyone.