Position in TMO
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$3,266,863,703
-$3,109,296,319 QoQ
Shares Held
6,646,316
-39.6% QoQ
Ownership
1.79%
of shares outstanding
% of Portfolio
0.46%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 99.76137156283271.ToString("F0")%
Shared 0.ToString("F0")%
None 0.23862843716729693.ToString("F0")%
Common Shares in TMO Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Mar 31, 2026Capital World Investors holds $5,982,795,766 across 7 Diagnostics & Research names. TMO ranks #1 (54.6% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
This page
|
6,646,316 | $3,266,863,703 | |
| 2 | ILMN |
Illumina, Inc.
|
15,549,960 | $1,916,688,069 | |
| 3 | NTRA |
Natera, Inc.
|
1,467,975 | $293,580,320 | |
| 4 | IDXX |
Idexx Laboratories Inc /De
|
497,851 | $279,737,498 | |
| 5 | ICLR |
Icon PLC
|
1,104,831 | $122,260,598 | |
| 6 | IQV |
Iqvia Holdings Inc.
|
599,624 | $102,259,876 | |
| 7 | CRL |
Charles River Laboratories International, Inc.
|
8,149 | $1,405,702 |
All Filings in TMO
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $3,266,863,703 | 6,646,316 | Shares | Defined | 2026-05-13 | |
| 2025-12-31 | $6,376,160,022 | 11,003,814 | Shares | Defined | 2026-02-11 | |
| 2025-09-30 | $4,988,501,027 | 10,285,145 | Shares | Defined | 2025-11-13 | |
| 2025-06-30 | $3,883,728,208 | 9,578,573 | Shares | Defined | 2025-08-13 | |
| 2025-03-31 | $5,504,152,640 | 11,061,400 | Shares | Defined | 2025-05-12 | |
| 2024-12-31 | $4,905,831,327 | 9,430,120 | Shares | Defined | 2025-02-13 | |
| 2024-09-30 | $5,768,645,878 | 9,325,777 | Shares | Defined | 2024-11-13 | |
| 2024-06-30 | $5,263,695,108 | 9,518,436 | Shares | Defined | 2024-08-13 | |
| 2024-03-31 | $7,842,761,720 | 13,493,852 | Shares | Defined | 2024-05-14 | |
| 2023-12-31 | $6,508,967,896 | 12,262,793 | Shares | Defined | 2024-02-13 | |
| 2023-09-30 | $6,456,201,893 | 12,755,007 | Shares | Defined | 2023-11-13 | |
| 2023-06-30 | $6,718,104,131 | 12,876,098 | Shares | Defined | 2023-08-11 | |
| 2023-03-31 | $7,449,273,315 | 12,924,464 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $7,459,228,766 | 13,545,241 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $6,841,009,658 | 13,488,061 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $7,600,280,210 | 13,989,619 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $8,368,063,998 | 14,167,551 | Shares | Defined | 2022-05-19 | |
| 2021-12-31 | $9,908,333,845 | 14,849,730 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $8,505,267,445 | 14,886,786 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $7,452,133,751 | 14,772,204 | Shares | Defined | 2021-08-16 | |
| 2021-03-31 | $7,639,433,357 | 16,739,194 | Shares | Defined | 2021-05-14 | |
| 2020-12-31 | $7,443,872,385 | 15,981,520 | Shares | Defined | 2021-02-12 | |
| 2020-09-30 | $7,074,489,530 | 16,023,033 | Shares | Defined | 2020-11-13 | |
| 2020-06-30 | $6,004,505,352 | 16,571,467 | Shares | Defined | 2020-08-14 | |
| 2020-03-31 | $4,771,492,293 | 16,824,726 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||