PARNASSUS INVESTMENTS, LLC
Position in TMO — Thermo Fisher Scientific Inc.
CIK 948669
San Francisco, CA
Position in TMO
as of Jun 30, 2026
· filed Jul 29, 2026
Position Value
$822,024,341
+$82,443,235 QoQ
Shares Held
1,639,589
+9.0% QoQ
Ownership
0.443%
of shares outstanding
% of Portfolio
2.20%
of 13F equity value
Holder Rank
#42
of 2,606 holders
Holding Since
Mar 2022
18 quarters on record
Voting authority
Sole 96%
Shared 0%
None 4%
Common Shares in TMO Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026PARNASSUS INVESTMENTS, LLC holds $1,651,401,789 across 6 Diagnostics & Research names. TMO ranks #1 (49.8% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
This page
|
1,639,589 | $822,024,341 | |
| 2 | DHR |
Danaher Corp /De/
|
3,674,207 | $699,862,949 | |
| 3 | A |
Agilent Technologies, Inc.
|
607,098 | $80,640,827 | |
| 4 | NTRA |
Natera, Inc.
|
77,576 | $21,058,005 | |
| 5 | IDXX |
Idexx Laboratories Inc /De
|
29,386 | $15,469,965 | |
| 6 | TWST |
Twist Bioscience Corp
|
120,001 | $12,345,702 |
All Filings in TMO
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18 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $822,024,341 | 1,639,589 | Shares | Sole | 2026-07-29 | |
| 2026-03-31 | $739,581,106 | 1,504,651 | Shares | Sole | 2026-05-12 | |
| 2025-12-31 | $917,330,192 | 1,583,105 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $1,015,448,057 | 2,093,621 | Shares | Sole | 2025-10-24 | |
| 2025-06-30 | $877,925,508 | 2,165,258 | Shares | Sole | 2025-08-06 | |
| 2025-03-31 | $706,806,465 | 1,420,431 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $734,022,160 | 1,410,957 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $697,666,545 | 1,127,870 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $643,529,971 | 1,163,707 | Shares | Sole | 2024-08-06 | |
| 2024-03-31 | $797,561,354 | 1,372,243 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $735,825,684 | 1,386,284 | Shares | Sole | 2024-02-12 | |
| 2023-09-30 | $629,132,865 | 1,242,928 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $660,807,853 | 1,266,522 | Shares | Sole | 2023-07-31 | |
| 2023-03-31 | $724,116,109 | 1,256,339 | Shares | Sole | 2023-05-01 | |
| 2022-12-31 | $618,048,748 | 1,122,317 | Shares | Sole | 2023-01-30 | |
| 2022-09-30 | $570,626,789 | 1,125,075 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $522,771,180 | 962,250 | Shares | Sole | 2022-08-05 | |
| 2022-03-31 | $552,948,219 | 936,169 | Shares | Sole | 2022-05-11 | |
| No filing history on record for this holder in this stock. | ||||||