賽默飛世爾科技公司
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionRockefeller Capital Management L.P.
Latest Disclosed Ownership427,331 shares
Latest Disclosed Value $ 210,049,269
Rockefeller Capital Management L.P. reports 1.03% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 14, 2026 - Rockefeller Capital Management L.P. filed a 13F-HR form disclosing ownership of 427,331 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $210,049,269 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 16, 2026 disclosing 422,980 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 1.03% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 427,331 4,351 1.03 210,049 -14.30 0.1930
2026-03-16 2025-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 422,980 84,122 24.83 245,098 49.13 0.4414
2026-02-14 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,485,995 2,147,137 245,026 0.2237
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 338,858 9,301 2.82 164,355 22.62 0.3215
2025-08-14 2025-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 329,557 -14,298 -4.16 134,034 -21.67 0.2939
2025-08-08 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 322,549 -21,306 131,192 0.1654
2025-05-14 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 343,855 55,021 19.05 171,110 13.84 0.4223
2025-02-13 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 288,834 43,983 17.96 150,304 -0.74 0.3893
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 244,851 1,966 0.81 151,432 12.73 0.4076
2024-08-12 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 242,885 14,768 6.47 134,336 1.32 0.3818
2024-05-14 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 228,117 20,293 9.76 132,585 20.19 0.3870
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 207,824 216 0.10 110,311 4.98 0.3686
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 207,608 8,053 4.04 105,083 1.63 0.4053
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 199,555 24,240 13.83 103,399 102,274.26 0.4005
2023-05-16 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 175,315 -7,101 -3.89 101 -99.90 0.4346
2023-03-06 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 182,416 -5,106 -2.72 100,453 5.62 0.5048
2022-11-02 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 187,522 11,083 6.28 95,108 -0.78 0.4916
2022-08-12 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 176,439 17,721 11.17 95,855 2.25 0.5093
2022-05-13 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 158,718 11,961 8.15 93,746 -4.26 0.4521
2022-02-14 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 146,757 7,624 5.48 97,921 23.19 0.4570
2021-11-12 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 139,133 18,917 15.74 79,490 31.08 0.4177
2021-08-10 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 120,216 24,682 25.84 60,644 39.10 0.3416
2021-05-11 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 95,534 11,006 13.02 43,598 10.74 0.2950
2021-02-12 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 84,528 20,106 31.21 39,370 38.42 0.2982
2020-11-13 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 64,422 7,258 12.70 28,442 37.31 0.2664
2020-08-12 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 57,164 7,790 15.78 20,713 47.92 0.2167
2020-05-12 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 49,374 6,554 15.31 14,003 0.66 0.1837
2020-02-07 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 42,820 -6,490 -13.16 13,911 -3.14 0.1734
2019-11-12 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 49,310 1,432 2.99 14,362 2.14 0.1948
2019-08-09 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 47,878 8,690 22.18 14,061 31.08 0.1961
2019-05-10 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 39,188 14,001 55.59 10,727 90.33 0.1529
2019-02-12 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 25,187 4,121 19.56 5,636 9.63 0.0988
2018-11-02 2018-09-30 13F Thermo Fisher Scientific Common 883556102 21,066 1,296 6.56 5,141 25.54 0.0780
2018-07-31 2018-06-30 13F Thermo Fisher Scientific Common 883556102 19,770 375 1.93 4,095 2.27 0.0667
2018-05-09 2018-03-31 13F Thermo Fisher Scientific Common 883556102 19,395 19,395 4,004 0.0662
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.