Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionSomerville Kurt F
Latest Disclosed Ownership1,525 shares
Latest Disclosed Value $ 749,583
Somerville Kurt F reports 6.15% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 8, 2026 - Somerville Kurt F filed a 13F-HR form disclosing ownership of 1,525 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $749,583 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 14, 2026 disclosing 1,625 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -6.15% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-08 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,525 -100 -6.15 750 -20.40 0.1977
2026-02-14 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,625 -80 -4.69 942 13.92 0.1597
2025-11-10 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,705 100 6.23 827 27.08 0.1366
2025-07-23 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,605 25 1.58 651 -17.30 0.1096
2025-05-06 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,580 500 46.30 786 40.11 0.1369
2025-02-13 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,080 0 0.00 562 -16.02 0.0943
2024-11-12 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,080 -5 -0.46 668 11.33 0.1075
2024-08-12 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,085 -11 -1.00 600 -5.81 0.1011
2024-05-14 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,096 0 0.00 637 9.64 0.1090
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,096 96 9.60 582 14.82 0.1096
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 0 0.00 506 -2.88 0.1018
2023-08-11 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 0 0.00 522 -9.55 0.0994
2023-05-11 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 0 0.00 576 4.73 0.1051
2023-02-09 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 0 0.00 551 8.48 0.1070
2022-11-08 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 0 0.00 507 -6.63 0.1018
2022-07-19 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 0 0.00 543 -8.12 0.1031
2022-05-17 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 0 0.00 591 -11.39 0.0952
2022-02-08 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 0 0.00 667 16.81 0.0924
2021-11-10 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 0 0.00 571 13.29 0.0866
2021-08-09 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 0 0.00 504 10.53 0.0752
2021-05-17 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 0 0.00 456 -2.15 0.0721
2021-02-16 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 0 0.00 466 5.43 0.0758
2020-10-28 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,000 -300 -23.08 442 -6.16 0.0778
2020-07-28 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,300 0 0.00 471 27.64 0.0869
2020-05-07 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,300 1,300 369 0.0818
2016-02-12 2015-12-31 13F THERMO FISHER SCIENTIFIC Common Stock 883556102 0 -190 -100.00 0 -100.00
2015-11-13 2015-09-30 13F THERMO FISHER SCIENTIFIC Common Stock 883556102 190 0 0.00 23 -8.00 0.0059
2015-08-10 2015-06-30 13F THERMO FISHER SCIENTIFIC Common Stock 883556102 190 190 25 0.0058
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.