Are senators required to disclose stock trades?

Yes. The STOCK Act (Stop Trading on Congressional Knowledge Act), signed in 2012, requires US senators and members of Congress to publicly disclose stock trades over $1,000 within 45 days of the transaction.

Where does Capitol Gains get its data?

All data is sourced from official US Senate financial disclosure filings available at efdsearch.senate.gov. Capitol Gains aggregates and indexes these public records to make them searchable in real time.

How often is Senate stock trade data updated?

Capitol Gains checks for new Senate disclosures multiple times per day and indexes them as soon as they become publicly available on the official Senate disclosure portal.

Which senators trade stocks the most?

Trading activity varies by senator and year. Capitol Gains tracks all active traders. Visit capitalgains.app to see the most recent disclosures sorted by activity.

Is it illegal for senators to trade stocks?

It is legal for senators to trade stocks, but it is illegal to trade on material non-public information obtained through their official duties. The STOCK Act makes this explicit and requires public disclosure of all trades.

What is the penalty for senators who fail to disclose trades on time?

The current penalty for late STOCK Act disclosure is $200 — widely criticized as too low to be a meaningful deterrent. Capitol Gains tracks disclosure dates so you can see which trades were filed late.

ExplainerMarch 30, 2026· 6 min read

The STOCK Act Explained: What Senators Must Disclose

Passed in 2012, the Stop Trading on Congressional Knowledge Act made congressional stock trading more transparent than ever before. But what exactly does it require — and what loopholes remain? Here's everything you need to know.

What is the STOCK Act?

The Stop Trading on Congressional Knowledge (STOCK) Act was signed into law on April 4, 2012 by President Obama. Its core purpose: to make it explicitly illegal for members of Congress to trade stocks based on non-public information they obtain through their official duties. Before the STOCK Act, insider trading laws technically didn't apply to members of Congress — a loophole that 60 Minutes famously exposed in 2011.

The law didn't just close the insider trading gap. It created a public disclosure regime requiring senators, representatives, their spouses, and dependent children to report every stock transaction over $1,000 within 45 calendar days of the trade.

What must senators disclose?

Each disclosure — formally called a Periodic Transaction Report (PTR) — must include:

→The senator's name (or the name of their spouse or dependent)
→The asset involved (stock ticker, fund name, etc.)
→Whether it was a purchase, sale, or exchange
→The date of the transaction
→A dollar range for the transaction value (not an exact dollar amount)

The dollar ranges are broad: $1,001–$15,000; $15,001–$50,000; $50,001–$100,000; $100,001–$250,000; $250,001–$500,000; $500,001–$1,000,000; $1,000,001–$5,000,000; and above $5,000,000. The public never sees the exact trade size — only the band.

The 45-day window — and why it matters

Senators have 45 days from the date of the actual trade to file their PTR. This means a senator could buy shares of a defense contractor the day before a classified Armed Services Committee briefing — and no one would know for up to six weeks.

Analysis of Senate PTR data shows that many senators file their reports at or near the 45-day deadline consistently, rather than filing promptly. Critics argue this allows senators to benefit from information advantages while the disclosure window obscures the timing. The pattern of deliberate late filing is one of the most telling signals in the data.

What happens if a senator misses the deadline?

The STOCK Act imposes a fine of $200 for a late filing. That's $200 — on a trade that could be worth millions. This has made the penalty largely meaningless as a deterrent. Senators who trade heavily routinely pay the $200 and file late, treating it as an administrative cost rather than a compliance obligation.

There are no criminal penalties for late filing, only for actual insider trading itself. Enforcement of the insider trading provisions has been essentially zero since the law passed.

What the STOCK Act doesn't cover

Several significant gaps remain in the law:

✕No requirement to sell conflicting holdings — senators can hold stocks indefinitely in sectors their committees regulate.
✕No independent enforcement body — the Senate Ethics Committee, composed of senators themselves, is the enforcement mechanism.
✕No requirement to use a blind trust — though some voluntary programs exist.
✕Exact trade values remain hidden — only ranges are disclosed.
✕Staff disclosure requirements were weakened in a 2013 amendment that removed online posting requirements for most congressional staff.

What's being proposed in 2026?

Multiple bipartisan bills to go further than the STOCK Act are under active consideration as of 2026. The ETHICS Act and the Restore Trust in Congress Act would both ban senators, their spouses, and dependent children from owning or trading individual stocks while in office. Mutual funds, ETFs, and diversified index funds would still be permitted.

Public support for a congressional stock trading ban consistently polls above 80% across party lines — one of the few bipartisan issues in modern American politics. Whether that support translates into legislation remains the open question.

How to use this data

Despite its limitations, STOCK Act disclosure data is one of the most valuable public datasets available to retail investors. The signals worth watching:

→Cluster buys — when 3+ senators buy the same stock within 90 days, especially senators on the same committee.
→Committee alignment — trades in sectors directly regulated by a senator's committee assignment.
→Filing delay — senators who consistently file at day 44-45 are maximizing their information advantage.
→Large single trades — $250,000+ transactions represent conviction, not routine portfolio rebalancing.

Capitol Gains aggregates all public PTR filings and surfaces them in real time so you can act on the data — not read about it in the news three weeks later.

Follow the trades in real time

Capitol Gains syncs with the Senate disclosure database every 30 minutes. Free to browse — SMS alerts at $9/mo.

Browse live feed →📱 Get SMS alerts

This article is for informational purposes only and does not constitute legal or financial advice. STOCK Act disclosure data is sourced from public Senate filings. Data may be delayed by up to 45 days. Not all senators disclose all trades — enforcement of the STOCK Act is limited.