CapitolRadar tracks every publicly disclosed TMO trade by US congress members and corporate insiders: 83 disclosed trades (47 buys, 36 sells) by 8 tracked traders, from 2018-11-27 to 2026-08-07. Updated daily from official filings.
Want a ping when Congress buys TMO? Free email alerts on notable disclosed trades — plus a $100,000 fantasy portfolio to play along against three AI traders. Join free
Thermo Fisher Scientific Inc. (TMO) — Healthcare · Medical - Diagnostics & Research, market cap about $248.9B.
CapitolRadar analysis
83 disclosed trades, with buys modestly ahead of sells
83 tracked TMO trades span November 27, 2018 through August 7, 2026: 47 buys and 36 sells involving 8 distinct traders. Buys therefore represent 47 of the 83 transactions, while the 11-trade difference between buys and sells describes transaction frequency, not dollars committed. Thermo Fisher Scientific is classified in Healthcare / Medical - Diagnostics & Research.
Recent quarterly samples are small. The listed quarters contain 16 trades in total, including 12 buys. Activity included 3 trades in 2024 Q1, 2 in 2024 Q3, 1 in 2024 Q4, 2 in 2025 Q2, 4 in 2025 Q3, 2 in 2026 Q1, and 1 each in 2026 Q2 and Q3. No listed quarter has more than 4 trades, limiting what can be inferred from quarter-to-quarter changes.
27 of 47 buys came from Ro Khanna
Ro Khanna accounts for 27 buys, more than half of all tracked purchases, with the latest dated August 7, 2026. Kevin Hern and Lois Frankel each recorded 6 buys, most recently on July 21, 2021 and May 5, 2021, respectively. Markwayne Mullin recorded 3 buys, Michael McCaul 2, and Josh Gottheimer, Tommy Tuberville, and Diana Harshbarger 1 each. The concentration in one trader and the small counts for most others mean the aggregate buy total is not broad-based across the full group.
2-buyer overlaps appear across six other tickers
Among these TMO buyers, 2 also bought each of AJG, BSX, RSG, IFNNY, MSFT, and TER. Each overlap involves only 2 people, so it is a limited sample and does not establish a wider shared trading pattern.
Congressional disclosures can be filed up to 45 days after a transaction, so reported activity is not a real-time signal. Disclosed transaction values are generally reported as ranges, making amount-based estimates approximate; no transaction amounts are provided here. Counts also treat each disclosure as one trade regardless of its size.
Analysis written from the tracked record on 2026-09-22; it is refreshed whenever the underlying numbers change.
Activity by quarter
| Quarter | Disclosed trades | Buys | Sells |
|---|---|---|---|
| 2026 Q3 | 1 | 1 | 0 |
| 2026 Q2 | 1 | 1 | 0 |
| 2026 Q1 | 2 | 1 | 1 |
| 2025 Q3 | 4 | 4 | 0 |
| 2025 Q2 | 2 | 1 | 1 |
| 2024 Q4 | 1 | 1 | 0 |
| 2024 Q3 | 2 | 1 | 1 |
| 2024 Q1 | 3 | 2 | 1 |
Who is buying TMO?
| Trader | Disclosed buys | Last buy | Grade |
|---|---|---|---|
| Ro Khanna | 27 | 2026-08-07 | — |
| Kevin Hern | 6 | 2021-07-21 | — |
| Lois Frankel | 6 | 2021-05-05 | — |
| Markwayne Mullin | 3 | 2025-05-13 | — |
| Michael McCaul | 2 | 2023-06-21 | — |
| Josh Gottheimer | 1 | 2024-09-10 | — |
| Tommy Tuberville | 1 | 2022-03-30 | — |
| Diana Harshbarger | 1 | 2022-02-04 | — |
Disclosed trades in TMO
| Date | Who | Type | Amount | 30d vs SPY |
|---|---|---|---|---|
| 2026-08-07 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2026-04-13 | Ro Khanna | buy | $15,001 - $50,000 | — |
| 2026-03-06 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2026-01-29 | Ro Khanna | sell | $15,001 - $50,000 | — |
| 2025-09-29 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2025-09-12 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2025-08-06 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2025-07-30 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2025-05-13 | Markwayne Mullin | buy | $15,001 - $50,000 | — |
| 2025-04-08 | Markwayne Mullin | sell | $50,001 - $100,000 | — |
| 2024-10-14 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2024-09-10 | Josh Gottheimer | buy | $1,001 - $15,000 | — |
| 2024-09-09 | Ro Khanna | sell | $1,001 - $15,000 | — |
| 2024-02-13 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2024-02-09 | Michael McCaul | sell | $50,001 - $100,000 | — |
| 2024-01-10 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2023-11-28 | Josh Gottheimer | sell | $1,001 - $15,000 | — |
| 2023-11-03 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2023-10-31 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2023-10-27 | Michael McCaul | sell | $15,001 - $50,000 | — |
These buyers also bought
Other stocks the tracked buyers of TMO disclosed buying in the last six months: INTU (2) · P (2) · GOOGL (2) · MSFT (2) · CB (2) · SNDK (2).
About Thermo Fisher Scientific Inc.
Thermo Fisher Scientific Inc. is a global leader in scientific services, providing a comprehensive range of offerings that include life sciences solutions, advanced analytical instruments, specialized diagnostic products, and an extensive portfolio of laboratory supplies and biopharmaceutical services. The company's reach extends across North America, Europe, Asia-Pacific, and other international markets. Its Life Sciences Solutions division furnishes researchers with essential reagents, state-of-the-art instruments, and consumables vital for biological and medical exploration, the development…
Frequently asked questions
Which politicians bought TMO most?
Ro Khanna leads with 27 disclosed buys, followed by Kevin Hern.
How current is this page?
It re-renders from the tracked record on every view and new filings are ingested daily — but STOCK Act disclosures can lag the trade by up to 45 days, so the most recent weeks are always incomplete.
Get alerts when trades like these are disclosed. Free account: fantasy portfolio + email alerts. Premium: a 6-hour head start on every signal.
CapitolRadar tracks publicly disclosed trades (STOCK Act filings and SEC Form 4). Disclosures can lag the trade by up to 45 days. Backtests measure past disclosed buys against the S&P 500 and do not predict future results. Everything on this page is impersonal information for your own research — not investment advice.