Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionPrivate Trust Co Na
Latest Disclosed Ownership4,853 shares
Latest Disclosed Value $ 2,385,517
Private Trust Co Na reports 1.57% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On April 30, 2026 - Private Trust Co Na filed a 13F-HR form disclosing ownership of 4,853 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $2,385,517 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 4,778 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 1.57% 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)
2026-04-30 2026-03-31 13F Thermo Fisher Scientific Com 883556102 4,853 75 1.57 2,386 -13.84 0.2130
2026-01-26 2025-12-31 13F Thermo Fisher Scientific Com 883556102 4,778 30 0.63 2,769 20.24 0.2425
2025-10-15 2025-09-30 13F Thermo Fisher Scientific Com 883556102 4,748 -146 -2.98 2,303 16.03 0.2031
2025-07-29 2025-06-30 13F Thermo Fisher Scientific Com 883556102 4,894 11 0.23 1,984 -18.32 0.1889
2025-04-28 2025-03-31 13F Thermo Fisher Scientific Com 883556102 4,883 324 7.11 2,430 2.45 0.2500
2025-02-05 2024-12-31 13F Thermo Fisher Scientific Com 883556102 4,559 -179 -3.78 2,372 -19.08 0.2435
2024-11-13 2024-09-30 13F Thermo Fisher Scientific Com 883556102 4,738 -560 -10.57 2,931 0.03 0.2953
2024-07-23 2024-06-30 13F Thermo Fisher Scientific Com 883556102 5,298 -59 -1.10 2,930 -5.91 0.3155
2024-04-24 2024-03-31 13F Thermo Fisher Scientific Com 883556102 5,357 570 11.91 3,114 22.56 0.3363
2024-01-24 2023-12-31 13F Thermo Fisher Scientific Com 883556102 4,787 -336 -6.56 2,541 -2.04 0.2985
2023-10-18 2023-09-30 13F Thermo Fisher Scientific Com 883556102 5,123 -1,472 -22.32 2,593 -24.62 0.3421
2023-07-28 2023-06-30 13F Thermo Fisher Scientific Com 883556102 6,595 47 0.72 3,441 -8.85 0.4340
2023-04-12 2023-03-31 13F Thermo Fisher Scientific Com 883556102 6,548 1,626 33.04 3,774 188,600.00 0.5145
2023-01-18 2022-12-31 13F Thermo Fisher Scientific Com 883556102 4,922 -445 -8.29 3 -99.93 0.4021
2022-10-17 2022-09-30 13F Thermo Fisher Scientific Com 883556102 5,367 -209 -3.75 2,722 -10.14 0.4421
2022-09-16 2022-06-30 13F/A-1 Thermo Fisher Scientific Com 883556102 5,576 -282 -4.81 3,029 -12.46 0.4703
2022-07-13 2022-06-30 13F Thermo Fisher Scientific Equities 883556102 5,858 0 3,460 0.5404
2022-04-12 2022-03-31 13F Thermo Fisher Scientific Equities 883556102 5,858 -9 -0.15 3,460 -11.62 0.5404
2022-01-10 2021-12-31 13F Thermo Fisher Scientific Equities 883556102 5,867 -1,183 -16.78 3,915 -2.81 0.5405
2021-10-06 2021-09-30 13F Thermo Fisher Scientific Equities 883556102 7,050 -303 -4.12 4,028 8.60 0.5863
2021-07-07 2021-06-30 13F Thermo Fisher Scientific Equities 883556102 7,353 -21 -0.28 3,709 10.22 0.5619
2021-04-06 2021-03-31 13F Thermo Fisher Scientific Equities 883556102 7,374 -265 -3.47 3,365 -5.42 0.5465
2021-01-05 2020-12-31 13F Thermo Fisher Scientific Equities 883556102 7,639 129 1.72 3,558 7.33 0.5993
2020-10-01 2020-09-30 13F Thermo Fisher Scientific Equities 883556102 7,510 171 2.33 3,315 23.46 0.6395
2020-07-07 2020-06-30 13F Thermo Fisher Scientific Equities 883556102 7,339 -866 -10.55 2,685 15.43 0.5630
2020-04-07 2020-03-31 13F Thermo Fisher Scientific Equities 883556102 8,205 3,553 76.38 2,326 53.94 0.6019
2020-01-02 2019-12-31 13F Thermo Fisher Scientific Equities 883556102 4,652 1,098 30.89 1,511 45.99 0.2803
2019-10-01 2019-09-30 13F Thermo Fisher Scientific Equities 883556102 3,554 281 8.59 1,035 7.70 0.2040
2019-07-02 2019-06-30 13F Thermo Fisher Scientific Equities 883556102 3,273 1,310 66.73 961 78.96 0.1938
2019-04-02 2019-03-31 13F Thermo Fisher Scientific Equities 883556102 1,963 233 13.47 537 38.76 0.1117
2019-01-03 2018-12-31 13F Thermo Fisher Scientific Equities 883556102 1,730 127 7.92 387 -1.02 0.0919
2018-10-09 2018-09-30 13F Thermo Fisher Scientific Equities 883556102 1,603 36 2.30 391 20.68 0.0798
2018-07-03 2018-06-30 13F Thermo Fisher Scientific Equities 883556102 1,567 -16 -1.01 324 -0.61 0.0702
2018-04-03 2018-03-31 13F Thermo Fisher Scientific Equities 883556102 1,583 -62 -3.77 326 4.49 0.0713
2018-01-16 2017-12-31 13F Thermo Fisher Scientific Equities 883556102 1,645 21 1.29 312 1.63 0.0660
2017-10-12 2017-09-30 13F Thermo Fisher Scientific Equities 883556102 1,624 -19 -1.16 307 7.34 0.0668
2017-07-11 2017-06-30 13F Thermo Fisher Scientific Equities 883556102 1,643 163 11.01 286 25.99 0.0624
2017-04-13 2017-03-31 13F Thermo Fisher Scientific Equities 883556102 1,480 -3,918 -72.58 227 -70.17 0.0525
2017-01-17 2016-12-31 13F Thermo Fisher Scientific Equities 883556102 5,398 -1,051 -16.30 761 -25.76 0.1822
2016-10-13 2016-09-30 13F Thermo Fisher Scientific Equities 883556102 6,449 -390 -5.70 1,025 1.49 0.2498
2016-07-19 2016-06-30 13F Thermo Fisher Scientific Equities 883556102 6,839 480 7.55 1,010 12.35 0.2627
2016-04-18 2016-03-31 13F Thermo Fisher Scientific Equities 883556102 6,359 3,800 148.50 899 148.34 0.2435
2016-01-19 2015-12-31 13F Thermo Fisher Scientific Equities 883556102 2,559 -132 -4.91 362 10.37 0.1031
2015-10-27 2015-09-30 13F Thermo Fisher Scientific Equities 883556102 2,691 419 18.44 328 11.95 0.0983
2015-07-10 2015-06-30 13F Thermo Fisher Scientific Equities 883556102 2,272 130 6.07 293 2.09 0.0840
2015-04-09 2015-03-31 13F Thermo Fisher Scientific Equities 883556102 2,142 2,142 0.00 287 0.0822
2015-01-28 2014-12-31 13F Thermo Fisher Scientific Com 883556102 0 -1,298 -100.00 0 -100.00
2014-10-09 2014-09-30 13F Thermo Fisher Scientific Com 883556102 1,298 -112 -7.94 158 -4.82 0.0536
2014-07-22 2014-06-30 13F Thermo Fisher Scientific Com 883556102 1,410 74 5.54 166 3.11 0.0541
2014-04-07 2014-03-31 13F Thermo Fisher Scientific Com 883556102 1,336 -82 -5.78 161 1.90 0.0607
2014-01-08 2013-12-31 13F Thermo Fisher Scientific Com 883556102 1,418 -27 -1.87 158 18.80 0.0636
2013-10-07 2013-09-30 13F Thermo Fisher Scientific Com 883556102 1,445 -22 -1.50 133 7.26 0.0602
2013-08-01 2013-06-30 13F Thermo Fisher Scientific Com 883556102 1,467 0 0.00 124 0.00 0.0569
2013-07-26 2013-03-31 13F Thermo Fisher Scientific Com 883556102 1,467 1,467 124 0.0569
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.