GW&K Investment Management, LLC
Position in TMO — Thermo Fisher Scientific Inc.
CIK 1082917
BOSTON, MA
Position in TMO
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$15,733,875
-$3,190,962 QoQ
Shares Held
32,010
-2.0% QoQ
Ownership
0.009%
of shares outstanding
% of Portfolio
0.14%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2022
14 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in TMO Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Mar 31, 2026GW&K Investment Management, LLC holds $247,104,364 across 16 Diagnostics & Research names. TMO ranks #7 (6.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MEDP |
Medpace Holdings, Inc.
|
182,772 | $87,765,286 | |
| 2 | NTRA |
Natera, Inc.
|
242,020 | $48,401,578 | |
| 3 | VCYT |
Veracyte, Inc.
|
1,437,322 | $46,296,141 | |
| 4 | CRL |
Charles River Laboratories International, Inc.
|
95,157 | $16,414,582 | |
| 5 | NEO |
Neogenomics Inc
|
2,190,758 | $16,255,424 | |
| 6 | IDXX |
Idexx Laboratories Inc /De
|
28,395 | $15,954,866 | |
| 7 | TMO |
Thermo Fisher Scientific Inc.
This page
|
32,010 | $15,733,875 | |
| 8 | DHR |
Danaher Corp /De/
|
736 | $139,545 |
All Filings in TMO
Export CSV
14 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $15,733,875 | 32,010 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $18,924,837 | 32,660 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $17,192,988 | 35,448 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $14,803,750 | 36,511 | Shares | Sole | 2025-08-11 | |
| 2025-03-31 | $19,063,056 | 38,310 | Shares | Sole | 2025-05-05 | |
| 2024-12-31 | $19,626,717 | 37,727 | Shares | Sole | 2025-02-05 | |
| 2024-09-30 | $24,212,685 | 39,143 | Shares | Sole | 2024-11-07 | |
| 2024-06-30 | $17,124,198 | 30,966 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $18,194,779 | 31,305 | Shares | Sole | 2024-05-08 | |
| 2023-12-31 | $15,628,049 | 29,443 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $82,505 | 163 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $70,958 | 136 | Shares | Sole | 2023-08-09 | |
| 2022-06-30 | $198,297 | 365 | Shares | Sole | 2022-08-09 | |
| 2022-03-31 | $200,821 | 340 | Shares | Sole | 2022-05-09 | |
| No filing history on record for this holder in this stock. | ||||||