Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionThames Capital Management Llc
Latest Disclosed Ownership13,202 shares
Latest Disclosed Value $ 6,489,179
Thames Capital Management Llc ownership in TMO / Thermo Fisher Scientific Inc.

On May 12, 2026 - Thames Capital Management Llc filed a 13F-HR form disclosing ownership of 13,202 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $6,489,179 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 13,202 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 0.00% 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)
2026-05-12 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,202 0 0.00 6,489 -15.17 1.1632
2026-02-10 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,202 0 0.00 7,650 19.46 1.1123
2025-10-28 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,202 -725 -5.21 6,403 13.41 0.9136
2025-08-11 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,927 0 0.00 5,647 -18.53 1.2793
2025-05-13 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,927 0 0.00 6,930 -4.35 2.6609
2025-02-13 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,927 0 0.00 7,245 -15.89 1.9639
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,927 0 0.00 8,615 11.86 2.6838
2024-08-13 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,927 0 0.00 7,702 -4.86 3.0158
2024-05-14 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,927 725 5.49 8,095 15.51 3.3682
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,202 0 0.00 7,007 4.86 3.6099
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,202 0 0.00 6,682 -2.99 3.8188
2023-08-11 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,202 0 0.00 6,888 -9.48 3.6688
2023-05-11 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,202 -15,989 -54.77 7,609 -52.67 5.3541
2023-02-14 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 29,191 -1,478 -4.82 16,075 3.34 7.6320
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 30,669 1,819 6.31 15,555 -0.76 7.7209
2022-08-11 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 28,850 0 0.00 15,674 -8.02 6.2939
2022-05-11 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,850 0 0.00 17,040 -11.48 3.5943
2022-02-14 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,850 -114 -0.39 19,250 16.33 3.6860
2021-11-12 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 28,964 0 0.00 16,548 13.26 3.6089
2021-08-13 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 28,964 0 0.00 14,611 10.53 3.4263
2021-05-13 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,964 0 0.00 13,219 -2.02 3.0484
2021-02-12 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,964 0 0.00 13,491 5.50 3.7943
2020-11-13 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 28,964 0 0.00 12,788 21.85 4.5106
2020-08-12 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 28,964 0 0.00 10,495 27.77 4.1173
2020-05-13 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,964 114 0.40 8,214 -12.36 6.4438
2020-02-13 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,850 -10,080 -25.89 9,372 -17.35 3.1069
2019-11-13 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 38,930 -13,930 -26.35 11,339 -26.96 3.3759
2019-08-14 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 52,860 7,440 16.38 15,524 24.87 4.3912
2019-05-15 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 45,420 45,420 12,432 3.4999
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.