Chesley Taft & Associates LLC / TMO
Chesley Taft & Associates LLC’s Thermo Fisher Scientific Inc Position
Does Chesley Taft & Associates LLC own Thermo Fisher Scientific Inc (TMO)? Yes — 42.3K shares worth $21M (+0.83% of its 13F portfolio) as of Q2 2026, up from 41.9K shares the prior filed quarter.
Position Value
$21M
Q2 2026
Shares
42.3K
% of Portfolio
+0.83%
Quarters Held
31
currently held
Position History TMO
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q2 2026 | 42.3K | $21M | +0.83% |
| Q1 2026 | 41.9K | $21M | +0.86% |
| Q4 2025 | 42.4K | $25M | +0.97% |
| Q3 2025 | 41.0K | $20M | +0.84% |
| Q2 2025 | 41.5K | $17M | +0.75% |
| Q1 2025 | 41.8K | $21M | +1.00% |
| Q4 2024 | 39.9K | $21M | +0.96% |
| Q3 2024 | 40.1K | $25M | +1.18% |
| Q2 2024 | 40.0K | $22M | +1.11% |
| Q1 2024 | 39.5K | $23M | +1.17% |
| Q4 2023 | 39.4K | $21M | +1.17% |
| Q3 2023 | 39.6K | $20M | +1.30% |
| Q2 2023 | 40.5K | $21M | +1.29% |
| Q1 2023 | 40.8K | $24M | +1.54% |
| Q4 2022 | 41.1K | $23M | +1.56% |
| Q3 2022 | 41.4K | $21M | +1.55% |
| Q2 2022 | 41.5K | $23M | +1.54% |
| Q1 2022 | 42.8K | $24M | +1.43% |
| Q4 2021 | 43.6K | $29M | +1.50% |
| Q3 2021 | 44.1K | $25M | +1.44% |
| Q2 2021 | 44.3K | $22M | +1.28% |
| Q1 2021 | 45.4K | $21M | +1.26% |
| Q4 2020 | 45.9K | $21M | +1.36% |
| Q3 2020 | 48.4K | $21M | +1.52% |
| Q2 2020 | 49.0K | $18M | +1.35% |
| Q1 2020 | 51.2K | $15M | +1.32% |
| Q4 2019 | 51.5K | $17M | +1.20% |
| Q3 2019 | 52.0K | $15M | +1.17% |
| Q2 2019 | 52.4K | $15M | +1.20% |
| Q1 2019 | 52.2K | $14M | +1.19% |
| Q4 2018 | 54.7K | $12M | +1.18% |
Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Chesley Taft & Associates LLC’s full portfolio or all institutional holders of TMO.