Members of Congress are allowed to trade individual stocks. They are also required, by law, to tell the public when they do. The system that forces this is the STOCK Act, and once you understand how it works you can read the disclosures for yourself instead of waiting for a headline.
The STOCK Act in one paragraph
The Stop Trading on Congressional Knowledge Act became law in 2012. It requires every member of the House and Senate, along with their spouses and dependent children, to publicly report any purchase, sale, or exchange of a security worth more than $1,000. The filing has to happen within 30 days of the member learning about the trade, and no later than 45 days after the transaction itself.
The 45-day lag is the catch. By the time a trade is public, it can be six weeks old. Treat congressional disclosures as a confirming signal, not a real-time alert.
Who has to file
- The member of the House or Senate.
- Their spouse, which is why you often see trades marked as filed by a spouse rather than the member.
- Dependent children.
That is why a "Nancy Pelosi trade" is usually a trade made by her husband. The law still requires it to be disclosed under the member's filing.
What actually gets filed
Each trade is reported on a document called a Periodic Transaction Report, or PTR. A PTR lists the asset, whether it was a purchase or a sale, the date, and an amount range rather than an exact dollar figure. The ranges are wide on purpose: a trade might be disclosed as "$1,001 to $15,000" or "$1,000,001 to $5,000,000." You learn roughly how big the bet was, not the precise number.
Where the filings live
How strong is enforcement?
Weak, honestly. The standard penalty for filing late is a $200 fee, and it is often waived. Dozens of members have missed deadlines with little consequence. So the data exists and is generally reliable, but the timeliness depends on members choosing to file on schedule.
Is this the same as illegal insider trading?
No. When a corporate executive trades on secret information about their own company, that is illegal under SEC rules. Congressional trading is legally separate. Members rarely hold company-specific secrets the way a CEO does. What they may hold is policy information: a sense of which bill is about to pass or which industry is about to get funded. That is a different, and largely still legal, kind of edge.
How to actually use it
- Watch for committee overlap: an Armed Services member buying a defense contractor is more interesting than a random buy.
- Weight cluster buys, several members buying the same sector in the same window, over any single trade.
- Always remember the six-week lag. Check whether the move already happened before you act.
Best used as confirmation. If a stock already looks good on the chart and you notice relevant members buying it, that is a useful second data point, not a reason to buy blind.
See what Congress is buying, free
ChartRead pulls House and Senate disclosures into one clean feed, updated daily, with a one-tap scan on any ticker a member just traded.
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