Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionFiduciary Trust Co
Latest Disclosed Ownership60,170 shares
Latest Disclosed Value $ 29,575,211
Fiduciary Trust Co reports 5.82% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - Fiduciary Trust Co filed a 13F-HR form disclosing ownership of 60,170 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $29,575,211 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 63,885 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -5.82% 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 60,170 -3,715 -5.82 29,575 -20.11 0.2035
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 63,885 -298 -0.46 37,018 18.92 0.4208
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 64,183 215 0.34 31,130 20.02 0.3526
2025-08-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 63,968 -2,258 -3.41 25,936 -21.30 0.3191
2025-05-15 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 66,226 -86 -0.13 32,954 -4.47 0.4315
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 66,312 -356 -0.53 34,497 -16.35 0.4554
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 66,668 196 0.29 41,239 12.18 0.5760
2024-08-14 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 66,472 -136 -0.20 36,759 -5.05 0.5518
2024-05-14 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 66,608 -1,201 -1.77 38,713 7.56 0.5940
2024-02-12 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 67,809 -4,726 -6.52 35,992 -1.97 0.6014
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 72,535 -1,068 -1.45 36,715 -4.39 0.6714
2023-08-01 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 73,603 1,801 2.51 38,402 -7.21 0.6766
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 71,802 -1,451 -1.98 41,385 2.59 0.7675
2023-02-14 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 73,253 -360 -0.49 40,340 8.05 0.7849
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 73,613 -287 -0.39 37,335 -7.01 0.8079
2022-08-12 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 73,900 -2,034 -2.68 40,149 -10.48 0.8456
2022-05-12 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 75,934 -2,509 -3.20 44,850 -14.31 0.8041
2022-02-14 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 78,443 -1,270 -1.59 52,340 14.92 0.8606
2021-11-12 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 79,713 -621 -0.77 45,543 12.38 0.8104
2021-08-16 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 80,334 -2,519 -3.04 40,526 7.18 0.7844
2021-05-19 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 82,853 -1,203 -1.43 37,812 -3.42 0.7672
2021-01-26 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 84,056 -2,449 -2.83 39,151 2.51 0.8160
2020-11-13 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 86,505 -2,107 -2.38 38,194 18.95 0.8999
2020-08-13 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 88,612 -2,644 -2.90 32,108 24.06 0.7945
2020-05-15 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 91,256 -377 -0.41 25,880 -13.06 0.7510
2020-02-04 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 91,633 -875 -0.95 29,769 10.48 0.6942
2019-11-12 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 92,508 3,648 4.11 26,945 3.25 0.6763
2019-08-14 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 88,860 888 1.01 26,097 8.38 0.6847
2019-05-07 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 87,972 450 0.51 24,080 22.94 0.6472
2019-01-29 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 87,522 -2,162 -2.41 19,586 -10.53 0.6000
2018-11-13 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 89,684 -1,143 -1.26 21,890 16.35 0.6144
2018-08-03 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 90,827 -3,285 -3.49 18,814 -3.17 0.5696
2018-05-07 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 94,112 -2,271 -2.36 19,430 6.17 0.6003
2018-01-29 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 96,383 -8,094 -7.75 18,301 -7.42 0.5440
2017-11-02 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 104,477 -5,340 -4.86 19,767 3.17 0.6083
2017-08-09 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 109,817 -6,484 -5.58 19,159 7.25 0.5873
2017-05-15 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 116,301 -7,802 -6.29 17,864 2.02 0.5459
2017-02-14 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 124,103 -8,587 -6.47 17,511 -17.03 0.5674
2016-11-14 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 132,690 -2,971 -2.19 21,106 5.29 0.7228
2016-08-12 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 135,661 -4,222 -3.02 20,046 1.21 0.7042
2016-05-16 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 139,883 8,585 6.54 19,806 6.34 0.7003
2016-02-03 2015-12-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 131,298 -5,277 -3.86 18,625 11.52 0.7897
2015-11-10 2015-09-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 136,575 -122 -0.09 16,701 -5.85 0.7531
2015-08-10 2015-06-30 13F THERMO FISHER SCIENTIFIC Common 883556102 136,697 -4,020 -2.86 17,738 -6.17 0.7380
2015-04-28 2015-03-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 140,717 -1,935 -1.36 18,905 5.77 0.7828
2015-01-26 2014-12-31 13F THERMO FISHER SCIENTIFIC Common 883556102 142,652 6,909 5.09 17,873 8.19 0.7512
2014-11-03 2014-09-30 13F THERMO FISHER SCIENTIFIC Common 883556102 135,743 -412 -0.30 16,520 2.83 0.7286
2014-07-25 2014-06-30 13F THERMO FISHER SCIENTIFIC Common 883556102 136,155 -273 -0.20 16,066 -2.06 0.6872
2014-05-13 2014-03-31 13F THERMO FISHER SCIENTIFIC Common 883556102 136,428 -1,642 -1.19 16,404 6.69 0.7259
2014-02-19 2013-12-31 13F THERMO FISHER SCIENTIFIC Common 883556102 138,070 -4,074 -2.87 15,375 17.38 0.6799
2013-10-31 2013-09-30 13F/A-1 THERMO FISHER SCIENTIFIC Common 883556102 142,144 -2,970 13,098 0.6032
2013-11-06 2013-09-30 13F/A-2 THERMO FISHER SCIENTIFIC Common 883556102 142,144 -2,970 -2.05 13,098 6.65 0.6032
2013-10-29 2013-09-30 13F THERMO FISHER SCIENTIFIC Common 883556102 142,144 13,098
2013-08-08 2013-06-30 13F THERMO FISHER SCIENTIFIC Common 883556102 145,114 145,114 12,281 0.5685
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.