Position in TMO
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$993,831,388
+$19,357,926 QoQ
Shares Held
1,982,271
-0.0% QoQ
Ownership
0.536%
of shares outstanding
% of Portfolio
0.59%
of 13F equity value
Holder Rank
#34
of 2,606 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 99%
Shared 0%
None 1%
Common Shares in TMO Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026PRIMECAP MANAGEMENT CO/CA/ holds $2,473,876,903 across 9 Diagnostics & Research names. TMO ranks #1 (40.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
This page
|
1,982,271 | $993,831,388 | |
| 2 | ILMN |
Illumina, Inc.
|
3,514,649 | $617,980,733 | |
| 3 | DHR |
Danaher Corp /De/
|
1,889,070 | $359,830,053 | |
| 4 | A |
Agilent Technologies, Inc.
|
1,327,396 | $176,318,010 | |
| 5 | GRAL |
GRAIL, Inc.
|
2,180,106 | $148,835,836 | |
| 6 | RVTY |
Revvity, Inc.
|
853,150 | $94,921,469 | |
| 7 | CRL |
Charles River Laboratories International, Inc.
|
266,870 | $60,523,447 | |
| 8 | WAT |
Waters Corp /De/
|
38,647 | $14,494,170 |
All Filings in TMO
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26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $993,831,388 | 1,982,271 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $974,473,462 | 1,982,531 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $1,192,097,849 | 2,057,292 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $1,117,157,236 | 2,303,322 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $975,614,608 | 2,406,192 | Shares | Sole | 2025-08-11 | |
| 2025-03-31 | $1,153,089,475 | 2,317,302 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $1,303,254,704 | 2,505,151 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $1,592,741,665 | 2,574,877 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $1,474,816,161 | 2,666,937 | Shares | Sole | 2024-08-09 | |
| 2024-03-31 | $1,602,719,703 | 2,757,557 | Shares | Sole | 2024-05-14 | |
| 2023-12-31 | $1,593,894,428 | 3,002,872 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $1,531,666,370 | 3,025,992 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $1,606,002,327 | 3,078,107 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $2,054,245,504 | 3,564,109 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $2,014,740,116 | 3,658,574 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $1,925,829,339 | 3,797,057 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $2,092,960,122 | 3,852,452 | Shares | Sole | 2022-08-11 | |
| 2022-03-31 | $2,325,688,509 | 3,937,507 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $2,739,088,258 | 4,105,102 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $2,457,554,284 | 4,301,462 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $2,208,198,370 | 4,377,264 | Shares | Sole | 2021-08-10 | |
| 2021-03-31 | $2,047,856,470 | 4,487,174 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $2,070,636,634 | 4,445,525 | Shares | Sole | 2021-02-08 | |
| 2020-09-30 | $2,030,215,366 | 4,598,241 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $1,717,651,391 | 4,740,441 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $1,374,141,543 | 4,845,351 | Shares | Sole | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||