Congress trades in IDEXX Laboratories, Inc. (IDXX)
5 of the members we track disclosed 11 purchases of IDXX between 2023-04-03 and 2025-09-04, and 14 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 IDXX was classified.
How these buys are tagged
1 of these purchases were made by a member whose own committee oversees Healthcare & Pharma. 8 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 | 11 | +27.3% | +28.6% | 91% |
| Notable (committee-flagged) | 1 | Too few buys to measure | ||
| Unaligned (no committee overlap) | 10 | +30.0% | +31.5% | 100% |
| Cluster, excl. mega-caps | 8 | +32.6% | +36.2% | 100% |
| Not clustered, excl. mega-caps | 3 | Too few buys to measure | ||
Who bought the most
- April McClain Delaney — 5 buys
- Robert Bresnahan — 2 buys
- Jefferson Shreve — 2 buys
- Byron Donalds — 1 buy
- Tommy Tuberville — 1 buy
Every disclosed purchase
| Member | Bought disclosed |
Signal | Price | 1W | 1M | 3M | vs sector |
|---|---|---|---|---|---|---|---|
| Byron Donalds | 2025-09-04 2025-10-07 |
Unaligned | $640.44 | +0.7% | -1.4% | +12.0% | +0.0% |
| Robert Bresnahan | 2025-05-15 2025-06-09 |
Unaligned | $511.99 | -1.4% | +2.1% | +27.7% | +25.0% |
| April McClain Delaney | 2025-04-09 2025-05-02 |
Unaligned Cluster | $397.10 | +1.3% | +23.8% | +36.1% | +38.5% |
| Jefferson Shreve | 2025-04-07 2025-05-08 |
Unaligned Cluster | $378.99 | +6.8% | +28.4% | +44.0% | +44.0% |
| April McClain Delaney | 2025-04-07 2025-05-02 |
Unaligned Cluster | $378.99 | +6.8% | +28.4% | +44.0% | +44.0% |
| April McClain Delaney | 2025-04-04 2025-05-02 |
Unaligned Cluster | $393.73 | -0.7% | +19.9% | +38.9% | +38.8% |
| April McClain Delaney | 2025-04-01 2025-05-02 |
Unaligned Cluster | $418.57 | -13.7% | +12.6% | +29.6% | +34.3% |
| April McClain Delaney | 2025-03-14 2025-04-02 |
Unaligned Cluster | $415.30 | +1.4% | -5.9% | +25.9% | +31.9% |
| Jefferson Shreve | 2025-03-13 2025-04-11 |
Unaligned Cluster | $406.29 | +3.5% | -3.8% | +29.7% | +34.6% |
| Robert Bresnahan | 2025-02-25 2025-03-27 |
Unaligned Cluster | $459.86 | -4.0% | -8.1% | +12.3% | +23.6% |
| Tommy Tuberville | 2023-04-03 2023-05-12 |
Notable | $489.27 | -2.5% | -2.1% | +0.2% | -0.4% |
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 14 disclosed sales of IDXX are not in this table.
Download the data behind this page, or read how every figure is calculated. Trades in IDXX are a small part of the full rankings, which score each member across everything they bought.
Data last updated .