Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionCapital International Sarl
Latest Disclosed Ownership89,414 shares
Latest Disclosed Value $ 43,949,663
Capital International Sarl reports 16.07% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 13, 2026 - Capital International Sarl filed a 13F-HR form disclosing ownership of 89,414 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $43,949,663 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 106,535 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -16.07% 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)
2026-05-13 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 89,414 -17,121 -16.07 43,950 -28.81 0.7196
2026-02-11 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 106,535 7,317 7.37 61,732 28.28 0.9913
2025-11-13 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 99,218 4,689 4.96 48,123 25.56 0.8314
2025-08-13 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 94,529 -2,178 -2.25 38,328 -20.35 0.7362
2025-05-12 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 96,707 27,426 39.59 48,121 33.51 1.0897
2025-02-13 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 69,281 -2,799 -3.88 36,042 -19.16 0.8319
2024-11-13 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 72,080 9,992 16.09 44,587 29.86 1.1455
2024-08-13 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 62,088 -3,600 -5.48 34,335 -10.07 1.0483
2024-05-14 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 65,688 12,151 22.70 38,179 34.35 1.2658
2024-02-13 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 53,537 3,512 7.02 28,417 12.22 1.0644
2023-11-13 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 50,025 3,491 7.50 25,321 4.29 1.1585
2023-08-11 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 46,534 4,262 10.08 24,279 -0.35 1.0894
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 42,272 4,309 11.35 24,364 16.55 1.2300
2023-02-14 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 37,963 5,873 18.30 20,906 28.44 1.4716
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 32,090 2,848 9.74 16,276 2.45 1.3143
2022-08-15 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 29,242 3,790 14.89 15,887 5.68 1.2734
2022-05-19 2022-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 25,452 4,124 19.34 15,033 5.64 0.7455
2022-05-16 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 25,452 4,124 15,033 0.7549
2022-02-14 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 21,328 17,019 394.96 14,231 478.03 0.6787
2021-11-15 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,309 -262 -5.73 2,462 6.76 0.2177
2021-08-16 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,571 366 8.70 2,306 20.17 0.1991
2021-05-14 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,205 171 4.24 1,919 2.13 0.1831
2021-02-16 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,034 414 11.44 1,879 17.58 0.1963
2020-11-16 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,620 -340 -8.59 1,598 11.36 0.1961
2020-08-14 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,960 1,114 39.14 1,435 77.82 0.1908
2020-05-15 2020-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 2,846 141 5.21 807 -8.19 0.1469
2020-02-18 2019-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 2,705 2,705 879 0.1364
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.