Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionCIBC Asset Management Inc
Latest Disclosed Ownership236,892 shares
Latest Disclosed Value $ 116,406,461
CIBC Asset Management Inc reports 1.41% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 12, 2026 - CIBC Asset Management Inc filed a 13F-HR form disclosing ownership of 236,892 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $116,406,461 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 233,593 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 1.41% 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 236,892 3,299 1.41 116,406 -13.99 0.2845
2026-02-10 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 233,593 7,822 3.46 135,341 23.67 0.3267
2025-10-31 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 225,771 -12,258 -5.15 109,441 14.04 0.3169
2025-08-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 238,029 10,609 4.66 95,968 -15.15 0.2968
2025-05-13 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 227,420 -5,190 -2.23 113,100 -6.50 0.3754
2025-01-31 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 232,610 -13,103 -5.33 120,965 -20.37 0.3964
2024-11-06 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 245,713 6,313 2.64 151,914 14.75 0.4928
2024-08-01 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 239,400 -8,582 -3.46 132,388 -8.15 0.4711
2024-05-09 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 247,982 -5,461 -2.15 144,130 7.14 0.4998
2024-02-13 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 253,443 6,297 2.55 134,525 7.54 0.5025
2023-10-30 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 247,146 -4,067 -1.62 125,098 -4.56 0.5186
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 251,213 7,579 3.11 131,070 -6.66 0.5026
2023-05-12 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 243,634 1,433 0.59 140,423 5.28 0.5569
2023-02-13 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 242,201 2,159 0.90 133,377 9.55 0.5600
2022-11-03 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 240,042 56,794 30.99 121,746 22.29 0.5342
2022-08-09 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 183,248 27,629 17.75 99,554 8.31 0.4036
2022-05-06 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 155,619 16,620 11.96 91,916 -0.89 0.3228
2022-02-08 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 138,999 -9,144 -6.17 92,745 9.58 0.3395
2021-11-09 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 148,143 -6,230 -4.04 84,638 8.68 0.3410
2021-08-16 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 154,373 14,369 10.26 77,876 21.88 0.3149
2021-05-14 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 140,004 -11,159 -7.38 63,895 -9.25 0.2718
2021-02-03 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 151,163 -11,711 -7.19 70,408 -2.09 0.3312
2020-11-05 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 162,874 38,727 31.19 71,912 59.86 0.3668
2020-07-28 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 124,147 18,441 17.45 44,984 50.06 0.2638
2020-04-30 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 105,706 51,515 95.06 29,978 70.28 0.2120
2020-02-14 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 54,191 -3,516 -6.09 17,605 4.74 0.0995
2019-10-30 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 57,707 648 1.14 16,808 0.30 0.0987
2019-08-05 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 57,059 -2,247 -3.79 16,757 3.23 0.1003
2019-05-06 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 59,306 -82 -0.14 16,233 22.14 0.1006
2019-02-12 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 59,388 -704 -1.17 13,291 -9.38 0.0977
2018-11-02 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 60,092 191 0.32 14,667 18.21 0.0907
2018-08-09 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 59,901 -3,033 -4.82 12,408 -4.50 0.0774
2018-04-30 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 62,934 -4,840 -7.14 12,993 0.96 0.0844
2018-02-02 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 67,774 -9,928 -12.78 12,869 -12.46 0.0787
2017-11-06 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 77,702 233 0.30 14,701 8.77 0.0920
2017-07-27 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 77,469 -7,890 -9.24 13,516 3.09 0.0934
2017-05-12 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 85,359 -1,955 -2.24 13,111 6.42 0.0901
2017-02-08 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 87,314 -255 -0.29 12,320 -11.48 0.0886
2016-10-19 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 87,569 519 0.60 13,917 8.19 0.1026
2016-08-02 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 87,050 17,951 25.98 12,863 31.47 0.0967
2016-05-09 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 69,099 2,022 3.01 9,784 2.83 0.0733
2016-02-02 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 67,077 -1,646 -2.40 9,515 13.23 0.0784
2015-11-03 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 68,723 652 0.96 8,403 -4.87 0.0672
2015-08-06 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 68,071 6,516 10.59 8,833 6.82 0.0614
2015-05-08 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 61,555 -145 -0.24 8,269 6.97 0.0587
2015-02-10 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 61,700 -10,921 -15.04 7,730 -12.54 0.0515
2014-11-05 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 72,621 -861 -1.17 8,838 1.93 0.0527
2014-08-01 2014-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 73,482 -682 -0.92 8,671 -2.76 0.0491
2014-05-09 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 74,164 5,482 7.98 8,917 16.59 0.0526
2014-02-04 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 68,682 -5,351 -7.23 7,648 12.11 0.0469
2013-10-29 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 74,033 -100 -0.13 6,822 8.73 0.0435
2013-10-02 2013-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 74,133 74,133 6,274 0.0428
2013-08-09 2013-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 74,133 6,274 0.0428
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.