Chesley Taft & Associates LLC
Position in TMO — Thermo Fisher Scientific Inc.
CIK 1164632
CHICAGO, IL
Position in TMO
as of Jun 30, 2026
· filed Jul 8, 2026
Position Value
$21,224,072
+$647,153 QoQ
Shares Held
42,333
+1.1% QoQ
Ownership
0.011%
of shares outstanding
% of Portfolio
1.12%
of 13F equity value
Holder Rank
#456
of 2,602 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 93%
Shared 0%
None 7%
Common Shares in TMO Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026Chesley Taft & Associates LLC holds $29,930,930 across 4 Diagnostics & Research names. TMO ranks #1 (70.9% of the industry book) .
All Filings in TMO
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26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $21,224,072 | 42,333 | Shares | Other | 2026-07-08 | |
| 2026-03-31 | $20,576,919 | 41,863 | Shares | Other | 2026-04-13 | |
| 2025-12-31 | $24,593,016 | 42,442 | Shares | Other | 2026-01-14 | |
| 2025-09-30 | $19,872,724 | 40,973 | Shares | Sole | 2025-10-08 | |
| 2025-06-30 | $16,813,209 | 41,467 | Shares | Sole | 2025-07-09 | |
| 2025-03-31 | $20,783,756 | 41,768 | Shares | Sole | 2025-04-10 | |
| 2024-12-31 | $20,781,107 | 39,946 | Shares | Sole | 2025-01-17 | |
| 2024-09-30 | $24,786,718 | 40,071 | Shares | Sole | 2024-10-07 | |
| 2024-06-30 | $22,142,673 | 40,041 | Shares | Sole | 2024-07-19 | |
| 2024-03-31 | $22,933,965 | 39,459 | Shares | Sole | 2024-04-16 | |
| 2023-12-31 | $20,933,826 | 39,439 | Shares | Sole | 2024-01-11 | |
| 2023-09-30 | $20,065,591 | 39,642 | Shares | Sole | 2023-10-11 | |
| 2023-06-30 | $21,137,136 | 40,512 | Shares | Sole | 2023-07-18 | |
| 2023-03-31 | $23,514,743 | 40,798 | Shares | Sole | 2023-04-11 | |
| 2022-12-31 | $22,642,170 | 41,116 | Shares | Sole | 2023-01-20 | |
| 2022-09-30 | $21,003,245 | 41,411 | Shares | Sole | 2022-10-13 | |
| 2022-06-30 | $22,571,654 | 41,547 | Shares | Sole | 2022-07-07 | |
| 2022-03-31 | $25,281,001 | 42,802 | Shares | Sole | 2022-04-14 | |
| 2021-12-31 | $29,075,650 | 43,576 | Shares | Sole | 2022-01-05 | |
| 2021-09-30 | $25,211,078 | 44,127 | Shares | Sole | 2021-10-05 | |
| 2021-06-30 | $22,332,382 | 44,269 | Shares | Sole | 2021-07-07 | |
| 2021-03-31 | $20,717,370 | 45,395 | Shares | Sole | 2021-04-06 | |
| 2020-12-31 | $21,358,807 | 45,856 | Shares | Sole | 2021-01-11 | |
| 2020-09-30 | $21,374,866 | 48,412 | Shares | Sole | 2020-10-08 | |
| 2020-06-30 | $17,740,166 | 48,960 | Shares | Sole | 2020-07-08 | |
| 2020-03-31 | $14,514,080 | 51,178 | Shares | Sole | 2020-04-15 | |
| No filing history on record for this holder in this stock. | ||||||