What Is the STOCK Act? Congressional Stock Trading, Explained

The STOCK Act, short for the Stop Trading on Congressional Knowledge Act, is the federal law that requires members of the U.S. Congress to publicly disclose their stock and securities trades. It is the reason anyone, including Coldpine, can see what Senators and Representatives are buying and selling. Signed into law in 2012, it is the legal backbone of every congressional-trading tracker.

What the STOCK Act is

Congress passed the STOCK Act with overwhelming bipartisan majorities and it was signed into law in April 2012, after public attention to the question of whether members were trading on information they learned through their official work. The law affirmed that members of Congress are not exempt from federal insider-trading rules, and, just as importantly, it created a public paper trail: it requires members to report their trades on a defined schedule so the public can see them.

What it requires

Members must file a Periodic Transaction Report (PTR) for each covered transaction over $1,000. The report is due within 30 days of being notified of the trade, and no later than 45 days after the transaction itself. The requirement covers stocks, bonds, and other securities, and it extends to trades made by a member’s spouse and dependent children, as well as to senior congressional and executive-branch officials.

Disclosures report an amount range rather than an exact dollar figure (for example, “$1,001–$15,000”), and they identify the security, the type of transaction (purchase, sale, or exchange), and the relevant dates. They do not reveal a member’s reasoning or their full portfolio, only the individual transactions they are required to report.

How disclosure actually works

House filings are published through the Clerk of the House’s financial disclosure portal, and Senate filings through the Senate’s electronic Financial Disclosure (eFD) system. In practice the reports arrive as filings that have to be read and structured one by one, and the up-to-45-day window means you usually learn about a trade well after it happened. Coldpine polls both portals continuously and parses each new report into clean, structured rows, then links every transaction back to the original government filing. That is the gap between “the data is technically public” and “you can actually use it.”

Why enforcement is weak

The STOCK Act’s disclosure requirement has real transparency value, but its teeth are famously dull. The standard penalty for filing a report late is a flat fee that is small relative to the trades involved and is frequently waived. Late and missing filings are common, and there is no routine mechanism that forces timely, complete compliance. The law makes the information available; it does not make members trade less or report faster.

The reform debate

Because the STOCK Act discloses trades rather than restricting them, there have been repeated, bipartisan proposals to go further and bar members of Congress (and sometimes their spouses) from trading individual stocks altogether, usually by requiring divestment or a qualified blind trust. As of this writing, no such ban has become federal law, so the STOCK Act’s disclosure regime remains the status quo, and the disclosures it produces remain the only real-time window into congressional trading.

What you can do with the disclosures

Because the filings are public, you can track them, and ask the question the raw feed doesn’t answer: which trades actually matter? Coldpine scores every disclosed trade for signal strength and measures which members’ disclosed purchases have beaten the S&P 500. You can browse every member and every stock Congress has disclosed, see the leaderboard of who trades well versus who just trades a lot, or read how Coldpine scores it all.