What is the STOCK Act?
The Stop Trading on Congressional Knowledge (STOCK) Act is a federal law signed in 2012 that requires members of Congress, their staff, and certain executive branch officials to publicly disclose securities transactions. It was designed to prevent insider trading based on non-public information obtained through government service.
For retail traders, the STOCK Act created something valuable: a searchable database of politician stock trades that can be used as one input in a broader trading framework.
What Must Be Disclosed?
Under the STOCK Act, covered officials must report:
| Transaction Type | Threshold | Deadline |
|---|---|---|
| Stock purchases | Over $1,000 | Within 45 days |
| Stock sales | Over $1,000 | Within 45 days |
| Options trades | Over $1,000 | Within 45 days |
| Spouse/dependent trades | Over $1,000 | Within 45 days |
Disclosures are filed as Periodic Transaction Reports (PTRs) and published on House and Senate disclosure websites.
STOCK Act vs Form 4: Key Differences
Many traders confuse congressional disclosures with corporate insider filings. They are different systems:
| Feature | STOCK Act (Congress) | Form 4 (Corporate Insiders) |
|---|---|---|
| Who files | Members of Congress | CEOs, directors, 10% owners |
| Deadline | 45 days | 2 business days |
| Filing system | House/Senate websites | SEC EDGAR |
| Information lag | High | Low |
A Senator buying $NVDA calls and a CEO buying company stock both create public records — but the timing, filing format, and signal quality differ significantly. See our guide on congressional trading vs insider trading for a full comparison.
Why Congressional Trade Data Matters
Academic research has found that members of Congress historically outperformed the broad market — though the edge has narrowed as disclosure data became widely tracked.
Congressional trades can be informative because:
- Committee access: Members on finance, defense, or healthcare committees may have sector-specific knowledge
- Legislative timing: Trades sometimes precede policy changes affecting specific industries
- Cluster patterns: Multiple politicians buying the same stock can indicate shared conviction
The 45-Day Delay Problem
The STOCK Act's biggest limitation for traders is timing. Trades must be disclosed within 45 days of execution — not immediately.
By the time a trade appears in public databases:
- The stock may have already moved 10-20%
- The politician may have closed or hedged the position
- Other market participants may have front-run the disclosure
This is why congressional data alone produces roughly a 54% win rate — barely better than random. The edge appears when Congress data confirms other independent sources like dark pool activity or 13F institutional holdings.
How to Use STOCK Act Data Effectively
Tier 1: High-value signals
- Cluster buying: 3+ Congress members buying the same stock
- Committee relevance: Banking committee member buying bank stocks
- Large size: Trades significantly above the politician's typical pattern
- Fast disclosure: Filed well before the 45-day deadline
Tier 2: Worth watching
- Single member trade with confirmation from Form 4 insider buying or institutional accumulation
- Sector-wide buying across multiple politicians
Tier 3: Noise (ignore)
- Small trades with no confirmation
- Forced sales for ethics compliance
- Portfolio rebalancing with no sector pattern
Real Example: Energy Sector Cluster
In early 2026, multiple energy-related congressional buys appeared alongside institutional signals:
$CTRA (Coterra Energy):
- Congress: 6 buy transactions from multiple members
- Dark pool: Accumulation pattern (z-score > 2.0)
- Form 8-K: Material agreement filed
One data source? Coin flip. Three independent sources pointing the same direction? That's signal fusion — and that's when you pay attention.
Regulatory History
- 2012: STOCK Act signed into law after public pressure over congressional trading
- 2013: Amendment weakened online disclosure requirements for senior executive branch officials
- 2022-2023: Renewed legislative efforts to ban congressional stock trading entirely (pending)
- Ongoing: Proposals to reduce disclosure window from 45 days to 10 days
Key Takeaways
- The STOCK Act requires Congress to disclose stock trades over $1,000 within 45 days
- Congressional disclosures are not the same as Form 4 insider filings
- The 45-day delay makes raw congressional data a weak standalone signal
- Congressional trades gain value when confirmed by dark pool, 13F, or insider data
- Use the Smart Money Scanner to see when congressional trades align with other sources