Congress trades in Thermo Fisher Scientific Inc (TMO)
11 of the members we track disclosed 18 purchases of TMO between 2021-11-02 and 2026-03-27, and 18 sales. Here is what the stock did afterwards.
Every purchase is measured over the three months after the transaction date, against XLV — the ETF standing in for Healthcare & Pharma — over exactly the same dates. The second figure is the one that carries information: the first mostly reflects what the sector did. How TMO was classified.
How these buys are tagged
Thermo Fisher Scientific Inc is a mega-cap, so a committee-aligned purchase here is tagged Aligned (Mega-cap) rather than Notable: owning a company this size says little about committee access. 10 are marked Cluster: A buy is marked Cluster when at least one other tracked member of Congress bought the same stock within 30 days of it, regardless of committee membership.
| Buys | Number | Return after 3 months | vs. sector | Beat their sector |
|---|---|---|---|---|
| All buys | 18 | +5.3% | +4.0% | 50% |
| Notable (committee-flagged) | 0 | Too few buys to measure | ||
| Unaligned (no committee overlap) | 9 | +7.7% | +5.3% | 44% |
| Cluster, excl. mega-caps | 0 | Too few buys to measure | ||
| Not clustered, excl. mega-caps | 0 | Too few buys to measure | ||
Who bought the most
- Lisa C. McClain — 3 buys
- Markwayne Mullin — 3 buys
- Julia Letlow — 2 buys
- Val T. Hoyle — 2 buys
- Dan Newhouse — 2 buys
Every disclosed purchase
| Member | Bought disclosed |
Signal | Price | 1W | 1M | 3M | vs sector |
|---|---|---|---|---|---|---|---|
| Alan Armstrong | 2026-03-27 2026-07-21 |
Aligned (Mega-cap) | $473.36 | +3.8% | -0.8% | +8.4% | -3.5% |
| Lisa C. McClain | 2025-10-30 2025-11-21 |
Unaligned | $556.22 | +1.8% | +6.2% | +6.5% | -0.1% |
| Julia Letlow | 2025-07-25 2026-01-13 |
Aligned (Mega-cap) Cluster | $478.32 | -3.2% | +4.5% | +19.7% | +12.7% |
| Lisa C. McClain | 2025-07-22 2025-08-13 |
Unaligned Cluster | $427.62 | +12.8% | +13.1% | +30.5% | +21.8% |
| Val T. Hoyle | 2025-06-06 2025-09-12 |
Unaligned Cluster | $401.90 | +0.2% | +6.8% | +22.6% | +19.9% |
| Markwayne Mullin | 2025-05-13 2025-06-11 |
Unaligned Cluster | $428.95 | -3.5% | -3.2% | +11.3% | +11.8% |
| Thomas H. Kean, Jr. | 2025-05-05 2025-06-17 |
Aligned (Mega-cap) Cluster | $422.27 | +2.4% | -4.4% | +10.5% | +14.2% |
| Lisa C. McClain | 2024-12-11 2025-08-13 |
Unaligned | $534.36 | -3.4% | +1.5% | -4.1% | -5.8% |
| Val T. Hoyle | 2024-10-29 2025-09-12 |
Unaligned Cluster | $547.77 | +2.4% | -4.8% | +6.7% | +7.9% |
| Julia Letlow | 2024-10-23 2026-01-13 |
Aligned (Mega-cap) Cluster | $576.49 | -4.5% | -11.0% | -0.3% | +5.1% |
| Josh Gottheimer | 2024-09-10 2024-10-03 |
Unaligned | $624.21 | -2.2% | -4.9% | -14.2% | -6.7% |
| John James | 2024-03-06 2024-09-02 |
Aligned (Mega-cap) | $591.50 | +0.3% | -2.0% | -2.7% | -2.6% |
| Markwayne Mullin | 2023-10-03 2023-11-01 |
Unaligned | $499.61 | -0.7% | -10.4% | +8.9% | -0.0% |
| Markwayne Mullin | 2023-09-13 2023-10-12 |
Unaligned | $510.90 | -1.2% | -5.5% | +1.5% | -0.9% |
| Tommy Tuberville | 2022-03-30 2022-04-08 |
Aligned (Mega-cap) Cluster | $595.15 | -1.3% | -7.1% | -10.0% | -2.9% |
| Rick W. Allen | 2022-03-10 2023-08-10 |
Aligned (Mega-cap) Cluster | $538.25 | +6.3% | +13.1% | +0.3% | +2.1% |
| Dan Newhouse | 2022-03-08 2023-05-26 |
Aligned (Mega-cap) Cluster | $524.00 | +5.1% | +16.8% | +7.0% | +3.9% |
| Dan Newhouse | 2021-11-02 2023-05-26 |
Aligned (Mega-cap) | $636.20 | -2.8% | -1.4% | -6.6% | -4.4% |
Prices are the closing price on the transaction date, not what was paid: filings never disclose an execution price. Blank figures mean the window has not elapsed yet. Sales are not scored — a sale closes a position rather than opening one — so the 18 disclosed sales of TMO are not in this table.
Download the data behind this page, or read how every figure is calculated. Trades in TMO are a small part of the full rankings, which score each member across everything they bought.
Data last updated .