Updated monthly. See the latest congressional stock purchases, top sectors, and most-traded tickers from STOCK Act disclosures filed in March 2026.
The Short Answer
In March 2026, congressional stock purchases are heavily concentrated in defense, artificial intelligence infrastructure, and domestic energy. The most-traded tickers include RTX (Raytheon Technologies), NVDA (Nvidia), LMT (Lockheed Martin), and several small-cap defense contractors — a pattern consistent with ongoing military appropriations debates and AI infrastructure spending bills moving through committee.
How We Track This Data
Every member of Congress is legally required under the STOCK Act of 2012 to disclose personal securities transactions within 45 days of the trade date. These disclosures are filed with the House Clerk (for Representatives) and the Senate Ethics Committee (for Senators) and are publicly available online.
TraderCongress aggregates these disclosures in real time, normalizes them against company identifiers, and cross-references them with government contract databases, lobbying filings, and off-exchange volume data to surface the highest-signal trades. The data below reflects disclosures filed or made public during March 2026.
Top Sectors Being Purchased in March 2026
Based on STOCK Act disclosures processed this month, here is the sector breakdown of congressional purchases:
| Sector | % of Purchases | Notable Tickers | YTD Change |
|---|---|---|---|
| Defense & Aerospace | 28% | RTX, LMT, NOC, BA | +14.2% |
| Technology / AI | 24% | NVDA, MSFT, META, PLTR | +9.7% |
| Energy (Domestic) | 16% | XOM, CVX, LNG, AR | +6.1% |
| Healthcare & Pharma | 12% | UNH, LLY, ABBV, ISRG | +3.8% |
| Financials | 11% | JPM, BRK.B, GS, BAC | +5.2% |
| Other | 9% | Various | Mixed |
The defense sector dominance is no surprise given that the Senate Armed Services Committee is currently marking up the FY2027 National Defense Authorization Act (NDAA). Members sitting on that committee — who have first-hand visibility into appropriations — have been among the most active purchasers of defense stocks this quarter.
Most-Traded Tickers by Purchase Volume
The following tickers saw the highest number of unique congressional buy disclosures filed in March 2026:
- NVDA (Nvidia Corporation) — 23 separate purchase disclosures across both chambers. AI chip demand driven by DOD computing contracts.
- RTX (Raytheon Technologies) — 19 disclosures. Active NDAA deliberations and expanding missile defense contracts.
- LMT (Lockheed Martin) — 14 disclosures. F-35 production ramp-up and hypersonics program funding.
- PLTR (Palantir Technologies) — 12 disclosures. Government AI platform contracts expanding across federal agencies.
- XOM (ExxonMobil) — 11 disclosures. Domestic energy production expansion under current administration policy.
- LLY (Eli Lilly) — 9 disclosures. Medicare drug pricing negotiations ongoing in Senate Finance Committee.
- MSFT (Microsoft) — 8 disclosures. Federal cloud computing and AI contracts through Azure Government.
Most Active Members This Month
Not all members of Congress trade at the same frequency. Here are the most active purchasers based on disclosures filed in March 2026:
| Member | Chamber | Party | Trades Filed | Primary Sectors |
|---|---|---|---|---|
| Rep. Michael McCaul | House | R | 7 | Defense, Tech |
| Sen. Tommy Tuberville | Senate | R | 6 | Defense, Energy |
| Rep. Ro Khanna | House | D | 5 | Technology, Clean Energy |
| Sen. Mark Warner | Senate | D | 5 | Technology, Financials |
| Rep. French Hill | House | R | 4 | Financials, Healthcare |
It's worth noting that Rep. McCaul sits on the House Foreign Affairs Committee and has access to classified briefings on international defense posture. Rep. Khanna sits on the House Armed Services Committee and the Select Committee on the Chinese Communist Party — committees with broad technology oversight jurisdiction.
What These Trades May Be Signaling
Congressional trades are not insider tips, and we are not suggesting anyone is trading on non-public information. However, pattern analysis across hundreds of trades reveals several themes that sophisticated investors monitor closely:
Defense Spending Is Increasing
The concentration of defense purchases among members of both Armed Services Committees — combined with the NDAA markup timeline — suggests that appropriations for defense are unlikely to be cut in FY2027. RTX, LMT, and NOC are primary beneficiaries of any spending increase.
AI Infrastructure Has Bipartisan Support
NVDA and MSFT purchases are coming from both Republican and Democratic members, suggesting that federal AI investment is genuinely bipartisan. The DOD has committed to significant AI integration across branches, and both parties appear to view this as a strategic priority independent of domestic political disagreements.
Domestic Energy Expansion Continues
LNG and domestic oil producers are seeing sustained congressional purchase interest consistent with the current administration's energy independence policy stance. XOM and CVX purchases from members of the Senate Energy Committee have been particularly notable.
How to Interpret This Data Yourself
Raw disclosure data is useful but requires context to be actionable. Here are the key filters that separate signal from noise:
- Committee relevance: A purchase by a member who sits on the oversight committee for that industry carries far more weight than a random trade.
- Purchase size: STOCK Act disclosures report ranges ($1K–$15K, $15K–$50K, $50K–$100K, $100K–$250K, $250K–$500K, $500K–$1M, $1M+). Focus on $50K+ purchases as higher-conviction signals.
- Recency: The 45-day disclosure window means you may be seeing trades that occurred 6 weeks ago. Check the actual transaction date, not the filing date.
- Pattern over one-offs: A single trade tells you little. A member buying the same stock repeatedly across multiple months is a much stronger signal.
- Cross-reference contracts: Before acting on a congressional trade, check USASpending.gov to see if the company has pending or recently awarded federal contracts.
Access the Full Real-Time Data
This monthly summary captures only the highest-level patterns from March 2026 disclosures. TraderCongress provides a complete real-time dashboard that shows every disclosure as it is filed, with filters by member, sector, ticker, committee assignment, party, and trade size. You can set up instant alerts for purchases that match your investment criteria — so you know within hours of a disclosure, not weeks.
Start your free TraderCongress account to access the full March 2026 disclosure feed and set up real-time purchase alerts today.
Bottom Line
March 2026 congressional purchasing data shows a clear concentration in defense, AI infrastructure, and domestic energy — sectors directly tied to legislation currently moving through committee. These patterns are not investment advice, but they represent a measurable information signal that sophisticated investors have historically used to generate alpha. The key is using the right tools to filter noise, identify committee relevance, and cross-reference multiple data sources before making any investment decision.
Disclaimer: This article is for educational and informational purposes only and does not constitute investment advice. Congressional trade disclosures are not evidence of insider trading or illegal activity. Trading stocks involves risk of loss. Past patterns do not guarantee future results. Always consult a qualified financial advisor before making investment decisions.