Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionM&t Bank Corp
Latest Disclosed Ownership96,837 shares
Latest Disclosed Value $ 47,598,291
M&t Bank Corp reports 1.69% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 12, 2026 - M&t Bank Corp filed a 13F-HR form disclosing ownership of 96,837 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $47,598,291 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 30, 2026 disclosing 98,502 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -1.69% 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 96,837 -1,665 -1.69 47,598 -16.61 0.0386
2026-01-30 2025-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 98,502 3,931 4.16 57,076 24.43 0.1833
2026-01-28 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 81,082 -13,489 13,051 0.0078
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 94,571 -4,789 -4.82 45,869 13.86 0.1542
2025-08-13 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 99,360 -5,318 -5.08 40,286 -22.66 0.1384
2025-04-30 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 104,678 -6,291 -5.67 52,088 -9.77 0.1898
2025-02-06 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 110,969 -2,378 -2.10 57,729 -17.66 0.1935
2024-11-19 2024-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 113,347 4,584 4.21 70,113 16.57 0.2305
2024-11-15 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 113,347 4,584 70,113 0.0422
2024-07-31 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 108,763 -1,391 -1.26 60,147 -6.05 0.2053
2024-05-07 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 110,154 -5,235 -4.54 64,023 4.53 0.2228
2024-02-06 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 115,389 -8,458 -6.83 61,248 -2.30 0.2250
2023-11-02 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 123,847 -7,970 -6.05 62,688 -8.85 0.2501
2023-08-09 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 131,817 -16,172 -10.93 68,777 -19.37 0.2567
2023-05-11 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 147,989 -3,130 -2.07 85,298 2.50 0.3302
2023-02-13 2022-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 151,119 37,160 32.61 83,221 43.98 0.3347
2023-02-13 2022-12-31 13F THE TRADE DESK COM CL A 883556102 151,136 37,177 83,199 0.3347
2022-11-17 2022-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 113,959 -300 -0.26 57,801 100.11 0.2568
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 113,959 -300 54,010 0.0461
2022-08-05 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 114,259 77,972 214.88 28,884 34.76 0.1360
2022-05-09 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 36,287 -44,878 -55.29 21,434 -60.42 0.0947
2022-02-07 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 81,165 -1,040 -1.27 54,157 15.31 0.2275
2021-10-28 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 82,205 -1,105 -1.33 46,967 11.75 0.2115
2021-08-13 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 83,310 -5,961 -6.68 42,027 3.15 0.1845
2021-05-06 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 89,271 30,590 52.13 40,742 49.06 0.1758
2021-02-12 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 58,681 5,773 10.91 27,332 17.00 0.1199
2020-11-06 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 52,908 -399 -0.75 23,361 20.95 0.1147
2020-07-29 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 53,307 -1,478 -2.70 19,315 24.32 0.1035
2020-05-14 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 54,785 -3,834 -6.54 15,537 -18.41 0.0919
2020-02-07 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 58,619 -353 -0.60 19,042 10.86 0.0894
2019-11-12 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 58,972 1,344 2.33 17,176 1.49 0.0857
2019-08-12 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 57,628 2,948 5.39 16,924 13.08 0.0884
2019-05-15 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 54,680 -2,060 -3.63 14,967 17.86 0.0783
2019-02-01 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 56,740 -4,552 -7.43 12,699 -15.11 0.0729
2018-11-09 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 61,292 186 0.30 14,960 18.20 0.0748
2018-08-10 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 61,106 926 1.54 12,656 1.86 0.0681
2018-05-04 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 60,180 -488 -0.80 12,425 7.86 0.0668
2018-02-06 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 60,668 -1,941 -3.10 11,520 -2.74 0.0604
2017-11-13 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 62,609 3,149 5.30 11,845 14.17 0.0643
2017-08-11 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 59,460 -2,299 -3.72 10,375 9.37 0.0613
2017-05-10 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 61,759 -1,672 -2.64 9,486 5.99 0.0573
2017-02-14 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 63,431 847 1.35 8,950 -10.09 0.0558
2016-11-04 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 62,584 -4,042 -6.07 9,954 1.13 0.0634
2016-08-04 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 66,626 -4,030 -5.70 9,843 -1.60 0.0662
2016-05-11 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 70,656 -6,770 -8.74 10,003 -8.91 0.0677
2016-02-12 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 77,426 2,310 3.08 10,982 19.55 0.0729
2015-11-13 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 75,116 21,473 40.03 9,186 31.96 0.0626
2015-08-14 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 53,643 4,477 9.11 6,961 5.36 0.0420
2015-05-14 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 49,166 -1,584 -3.12 6,607 3.90 0.0412
2015-02-12 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 50,750 4,012 8.58 6,359 11.78 0.0398
2014-11-14 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 46,738 44,433 1,927.68 5,689 1,991.54 0.0399
2014-08-13 2014-06-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 2,305 64 2.86 272 1.12 0.0114
2014-05-14 2014-03-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 2,241 575 34.51 269 44.62 0.0112
2014-02-12 2013-12-31 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 1,666 17 1.03 186 22.37 0.0078
2013-11-13 2013-09-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 1,649 -1,940 -54.05 152 -50.00 0.0073
2013-07-30 2013-06-30 13F THERMO FISHER SCIENTIFIC COMMON STOCK 883556102 3,589 3,589 304 0.0147
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.