Position in TMO
as of Mar 31, 2026
· filed May 7, 2026
Position Value
$830,582,476
-$127,540,414 QoQ
Shares Held
1,689,790
+2.2% QoQ
Ownership
0.455%
of shares outstanding
% of Portfolio
0.18%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 84.60566105847472.ToString("F0")%
Shared 6.451985157919031.ToString("F0")%
None 8.942353783606247.ToString("F0")%
Common Shares in TMO Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Mar 31, 2026DIMENSIONAL FUND ADVISORS LP holds $4,738,083,100 across 33 Diagnostics & Research names. TMO ranks #1 (17.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
This page
|
1,689,790 | $830,582,476 | |
| 2 | DHR |
Danaher Corp /De/
|
2,645,911 | $501,664,724 | |
| 3 | DGX |
Quest Diagnostics Inc
|
1,949,535 | $382,069,866 | |
| 4 | LH |
Labcorp Holdings Inc.
|
1,332,775 | $355,597,695 | |
| 5 | IDXX |
Idexx Laboratories Inc /De
|
573,332 | $322,149,515 | |
| 6 | CRL |
Charles River Laboratories International, Inc.
|
1,652,484 | $285,053,489 | |
| 7 | IQV |
Iqvia Holdings Inc.
|
1,657,696 | $282,703,474 | |
| 8 | RVTY |
Revvity, Inc.
|
2,917,953 | $255,641,860 |
All Filings in TMO
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25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $830,582,476 | 1,689,790 | Shares | Sole | 2026-05-07 | |
| 2025-12-31 | $958,122,890 | 1,653,504 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $808,890,647 | 1,667,747 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $686,214,288 | 1,692,434 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $860,689,762 | 1,729,682 | Shares | Sole | 2025-05-13 | |
| 2024-12-31 | $988,344,917 | 1,899,823 | Shares | Sole | 2025-02-13 | |
| 2024-09-30 | $1,056,297,347 | 1,707,644 | Shares | Sole | 2024-11-07 | |
| 2024-06-30 | $962,486,546 | 1,740,482 | Shares | Sole | 2024-08-09 | |
| 2024-03-31 | $999,917,750 | 1,720,407 | Shares | Sole | 2024-05-10 | |
| 2023-12-31 | $907,739,009 | 1,710,166 | Shares | Defined | 2024-02-07 | |
| 2023-09-30 | $866,135,323 | 1,711,155 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $999,131,422 | 1,914,962 | Shares | Sole | 2023-08-09 | |
| 2023-03-31 | $1,150,727,890 | 1,996,509 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $1,193,935,567 | 2,168,072 | Shares | Sole | 2023-02-09 | |
| 2022-09-30 | $1,127,924,623 | 2,223,870 | Shares | Sole | 2022-11-10 | |
| 2022-06-30 | $1,215,151,115 | 2,236,694 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $1,382,442,313 | 2,340,544 | Shares | Defined | 2022-05-13 | |
| 2021-12-31 | $1,558,662,631 | 2,335,985 | Shares | Defined | 2022-02-09 | |
| 2021-09-30 | $1,339,248,939 | 2,344,090 | Shares | Defined | 2021-11-12 | |
| 2021-06-30 | $1,161,828,209 | 2,303,067 | Shares | Defined | 2021-08-12 | |
| 2021-03-31 | $1,007,457,480 | 2,207,497 | Shares | Defined | 2021-05-14 | |
| 2020-12-31 | $1,056,589,325 | 2,268,430 | Shares | Defined | 2021-03-08 | |
| 2020-09-30 | $1,079,591,016 | 2,445,169 | Shares | Defined | 2020-11-12 | |
| 2020-06-30 | $899,695,655 | 2,483,015 | Shares | Defined | 2020-08-13 | |
| 2020-03-31 | $707,119,164 | 2,493,368 | Shares | Defined | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||