Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionCI Private Wealth, LLC
Latest Disclosed Ownership832,069 shares
Latest Disclosed Value $ 417,386,234
CI Private Wealth, LLC reports 4.24% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - CI Private Wealth, LLC filed a 13F-HR form disclosing ownership of 832,069 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $417,386,234 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 9, 2026 disclosing 798,226 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 4.24% 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)
2026-05-15 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 832,069 33,843 4.24 417,386 -9.84 0.5972
2026-03-09 2025-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 798,226 66,029 9.02 462,930 30.43 0.6295
2026-02-19 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 765,477 33,280 402,847 0.1516
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 732,197 -143,246 -16.36 354,928 -0.01 0.5593
2025-09-26 2025-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 875,443 -51,515 -5.56 354,980 -23.04 0.4723
2025-08-15 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,752,607 825,649 720,576 0.5957
2025-05-14 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 926,958 31,031 3.46 461,280 -0.90 0.7534
2025-02-10 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 895,927 -54,001 -5.68 465,479 -20.78 0.7724
2024-11-12 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 949,928 23,467 2.53 587,597 14.69 0.9171
2024-08-13 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 926,461 -13,331 -1.42 512,334 -6.17 0.8924
2024-05-09 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 939,792 -3,762 -0.40 545,995 9.01 0.9720
2024-02-09 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 943,554 124,673 15.22 500,850 20.84 0.9212
2023-11-03 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 818,881 -9,704 -1.17 414,480 -4.13 0.9525
2023-08-10 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 828,585 20,751 2.57 432,315 -7.15 0.9974
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 807,834 195,489 31.92 465,609 38.06 1.2503
2023-02-15 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 612,345 612,345 337,244 1.2249
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.