Position in TMO
as of Mar 31, 2026
· filed May 8, 2026
Position Value
$85,011,588
-$5,967,856 QoQ
Shares Held
172,953
+10.2% QoQ
Ownership
0.047%
of shares outstanding
% of Portfolio
0.30%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 60.50696146907812.ToString("F0")%
Shared 0.ToString("F0")%
None 39.49303853092188.ToString("F0")%
Common Shares in TMO Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Mar 31, 2026BLAIR WILLIAM & CO/IL holds $949,814,483 across 21 Diagnostics & Research names. TMO ranks #3 (9.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | IDXX |
Idexx Laboratories Inc /De
|
946,336 | $531,736,735 | |
| 2 | DHR |
Danaher Corp /De/
|
1,296,804 | $245,874,038 | |
| 3 | TMO |
Thermo Fisher Scientific Inc.
This page
|
172,953 | $85,011,588 | |
| 4 | MTD |
Mettler Toledo International Inc/
|
25,604 | $32,291,764 | |
| 5 | DGX |
Quest Diagnostics Inc
|
91,972 | $18,024,672 | |
| 6 | GH |
Guardant Health, Inc.
|
103,644 | $9,573,596 | |
| 7 | VCYT |
Veracyte, Inc.
|
194,887 | $6,277,310 | |
| 8 | MEDP |
Medpace Holdings, Inc.
|
7,518 | $3,610,068 |
All Filings in TMO
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $85,011,588 | 172,953 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $90,979,444 | 157,010 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $65,052,822 | 134,124 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $54,962,130 | 135,555 | Shares | Sole | 2025-07-24 | |
| 2025-03-31 | $70,067,056 | 140,810 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $75,363,639 | 144,866 | Shares | Sole | 2025-02-12 | |
| 2024-09-30 | $90,566,689 | 146,413 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $82,382,622 | 148,974 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $88,502,009 | 152,272 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $81,325,520 | 153,216 | Shares | Sole | 2024-02-12 | |
| 2023-09-30 | $78,602,126 | 155,288 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $79,726,008 | 152,805 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $90,913,145 | 157,734 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $87,403,864 | 158,717 | Shares | Sole | 2023-02-10 | |
| 2022-09-30 | $80,755,298 | 159,221 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $85,157,510 | 156,747 | Shares | Sole | 2022-08-10 | |
| 2022-03-31 | $88,182,863 | 149,298 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $102,057,026 | 152,954 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $86,136,567 | 150,765 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $76,706,681 | 152,054 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $70,448,185 | 154,363 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $71,054,273 | 152,549 | Shares | Sole | 2021-02-09 | |
| 2020-09-30 | $61,995,589 | 140,414 | Shares | Sole | 2020-11-06 | |
| 2020-06-30 | $48,611,896 | 134,161 | Shares | Sole | 2020-08-12 | |
| 2020-03-31 | $36,560,861 | 128,917 | Shares | Sole | 2020-05-11 | |
| No filing history on record for this holder in this stock. | ||||||