Viking Global Investors — TMO Trade History
Quarter-by-quarter changes in the THERMO FISHER SCIENTIFIC INC position · CUSIP 883556102
Currently held · 3 QFirst seen: 2017 Q4
| Quarter | Filed | Activity | Shares | Δ Shares | Δ % | Value | % Port. |
|---|---|---|---|---|---|---|---|
| 2026 Q2 | 2026-08-14 | Add | 1,937,415 | 269,390 | +16.2% | $971.3M | 2.77% |
| 2026 Q1 | 2026-05-15 | Add | 1,668,025 | 874,838 | +110.3% | $819.9M | 2.29% |
| 2025 Q4 | 2026-02-17 | New | 793,187 | 793,187 | — | $459.6M | 1.22% |
| 2025 Q3 | 2025-11-14 | — | — | — | — | — | — |
| 2025 Q2 | 2025-08-14 | — | — | — | — | — | — |
| 2025 Q1 | 2025-05-15 | — | — | — | — | — | — |
| 2024 Q4 | 2025-02-14 | — | — | — | — | — | — |
| 2024 Q3 | 2024-11-14 | — | — | — | — | — | — |
| 2024 Q2 | 2024-08-14 | Sold out | — | -128,489 | -100.0% | — | — |
| 2024 Q1 | 2024-05-15 | Reduce | 128,489 | -409,996 | -76.1% | $74.7M | 0.28% |
| 2023 Q4 | 2024-02-14 | Reduce | 538,485 | -361,230 | -40.1% | $285.8M | 1.05% |
| 2023 Q3 | 2023-11-14 | Add | 899,715 | 66,482 | +8.0% | $455.4M | 1.85% |
| 2023 Q2 | 2023-08-14 | Reduce | 833,233 | -23,603 | -2.8% | $434.7M | 1.78% |
| 2023 Q1 | 2023-05-15 | Add | 856,836 | 17,310 | +2.1% | $493.9M | 2.32% |
| 2022 Q4 | 2023-02-14 | Add | 839,526 | 245,989 | +41.4% | $462.3M | 2.31% |
| 2022 Q3 | 2022-11-14 | Reduce | 593,537 | -269,050 | -31.2% | $301.0M | 1.39% |
| 2022 Q2 | 2022-08-15 | Add | 862,587 | 680,350 | +373.3% | $468.6M | 2.14% |
| 2021 Q3 | 2022-05-16 | Reduce | 182,237 | -28,821 | -13.7% | $104.1M | 0.29% |
| 2021 Q4 | 2022-05-16 | Reduce | 211,058 | -273,638 | -56.5% | $140.8M | 0.41% |
| 2022 Q1 | 2022-05-16 | Reduce | 484,696 | -526,705 | -52.1% | $286.3M | 1.16% |
| 2021 Q2 | 2021-08-16 | Add | 1,011,401 | 149,514 | +17.3% | $510.2M | 1.55% |
| 2021 Q1 | 2021-05-17 | Add | 861,887 | 784,070 | +1007.6% | $393.3M | 1.17% |
| 2020 Q4 | 2021-02-16 | Reduce | 77,817 | -1,299,406 | -94.3% | $36.2M | 0.10% |
| 2020 Q3 | 2020-11-16 | Reduce | 1,377,223 | -356,921 | -20.6% | $608.1M | 2.20% |
| 2020 Q2 | 2020-08-07 | New | 1,734,144 | 1,734,144 | — | $628.4M | 2.72% |
| 2020 Q1 | 2020-05-13 | — | — | — | — | — | — |
| 2019 Q4 | 2020-02-13 | — | — | — | — | — | — |
| 2019 Q3 | 2019-11-13 | — | — | — | — | — | — |
| 2019 Q2 | 2019-08-14 | Sold out | — | -1,146,037 | -100.0% | — | — |
| 2019 Q1 | 2019-05-15 | Add | 1,146,037 | 598,131 | +109.2% | $313.7M | 1.80% |
| 2018 Q4 | 2019-02-14 | Reduce | 547,906 | -1,329,914 | -70.8% | $122.6M | 0.70% |
| 2018 Q3 | 2018-11-14 | Reduce | 1,877,820 | -602,542 | -24.3% | $458.3M | 2.54% |
| 2018 Q2 | 2018-08-14 | Add | 2,480,362 | 1,615,681 | +186.9% | $513.8M | 2.94% |
| 2018 Q1 | 2018-05-15 | Add | 864,681 | 50,164 | +6.2% | $178.5M | 1.07% |
| 2017 Q4 | 2018-02-14 | New | 814,517 | 814,517 | — | $154.7M | 0.95% |
| 2017 Q3 | 2017-11-14 | — | — | — | — | — | — |
| 2017 Q2 | 2017-08-14 | — | — | — | — | — | — |
| 2017 Q1 | 2017-05-15 | — | — | — | — | — | — |
| 2016 Q4 | 2017-02-14 | — | — | — | — | — | — |
| 2016 Q3 | 2016-11-14 | — | — | — | — | — | — |
Share counts are split-adjusted. Time held counts consecutive quarters ending with the latest filing; more than ten years shows as ">10 Years".
13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.