Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionVictory Capital Management Inc
Latest Disclosed Ownership627,704 shares
Latest Disclosed Value $ 308,559,353
Victory Capital Management Inc reports 19.05% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - Victory Capital Management Inc filed a 13F-HR form disclosing ownership of 627,704 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $308,559,353 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 775,407 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -19.05% 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 627,704 -147,703 -19.05 308,559 -31.33 0.1481
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 775,407 -63,965 -7.62 449,338 37.06 0.2536
2025-11-12 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 839,372 19,316 2.36 327,833 -2.30 0.1917
2025-08-13 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 820,056 649,019 379.46 335,556 294.27 0.2164
2025-05-02 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 171,037 911 0.54 85,108 -3.84 0.0871
2025-02-06 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 170,126 -5,461 -3.11 88,505 -18.51 0.0870
2024-11-05 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 175,587 -6,167 -3.39 108,613 8.06 0.1046
2024-08-05 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 181,754 905 0.50 100,510 -4.38 0.1008
2024-05-03 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 180,849 -2,105 -1.15 105,111 8.24 0.1026
2024-02-05 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 182,954 -78,006 -29.89 97,110 -26.48 0.1022
2023-11-06 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 260,960 -15,849 -5.73 132,090 -8.54 0.1518
2023-07-27 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 276,809 -10,790 -3.75 144,425 -12.87 0.1588
2023-05-02 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 287,599 -29,216 -9.22 165,763 -4.99 0.1862
2023-04-25 2022-12-31 13F/A-3 THERMO FISHER SCIENTIFIC COM 883556102 316,815 -21,656 -6.40 174,467 1.63 0.2007
2023-03-10 2022-12-31 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 316,815 -21,656 174,467 0.1905
2023-02-10 2022-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 316,815 -21,656 174,467 0.1203
2023-02-09 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 315,926 -22,545 178,843 0.1215
2022-11-02 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 338,471 11,655 3.57 171,669 -3.31 0.2003
2022-08-01 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 326,816 -8,688 -2.59 177,552 -6.84 0.2023
2022-05-04 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 335,504 -6,046 -1.77 190,579 -16.37 0.1907
2022-02-07 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 341,550 27,805 8.86 227,896 27.14 0.2097
2021-11-02 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 313,745 -17,790 -5.37 179,252 7.18 0.1755
2021-08-03 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 331,535 -3,597 -1.07 167,250 9.35 0.1606
2021-05-04 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 335,132 131,829 64.84 152,948 61.52 0.1567
2021-02-01 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 203,303 35,494 21.15 94,694 27.81 0.1055
2020-11-09 2020-09-30 13F Thermo Fisher Scientific COM 883556102 167,809 31,135 22.78 74,091 49.61 0.0951
2020-08-07 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 136,674 -36,601 -21.12 49,522 0.78 0.0671
2020-05-12 2020-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 173,275 8,928 5.43 49,141 -7.96 0.0824
2020-05-04 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 173,275 8,928 49,141 53,779.8309
2020-02-06 2019-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 164,347 12,737 8.40 53,391 20.91 0.0648
2020-02-04 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 177,503 25,893 55,592 66,637.6104
2019-11-12 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 151,610 129,817 595.68 44,159 589.98 0.0568
2019-08-15 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 21,793 1,568 7.75 6,400 15.61 0.0129
2019-05-03 2019-03-31 13F THERMO FISHER SCIENTIFIC CS 883556102 20,225 -4,874 -19.42 5,536 -1.44 0.0126
2019-05-02 2018-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 25,099 -109 -0.43 5,617 -8.71 0.0141
2019-02-05 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 25,099 -109 5,617
2018-11-01 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 25,208 2,225 9.68 6,153 29.24 0.0127
2018-08-02 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 22,983 1,826 8.63 4,761 9.00 0.0101
2018-05-04 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 21,157 1,234 6.19 4,368 15.46 0.0095
2018-02-01 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 19,923 1,248 6.68 3,783 7.08 0.0080
2017-10-27 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,675 575 3.18 3,533 11.87 0.0079
2017-08-07 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,100 1,645 10.00 3,158 24.97 0.0074
2017-05-10 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 16,455 1,800 12.28 2,527 22.20 0.0060
2017-02-09 2016-12-31 13F THERMO ELECTRON COM 883556102 14,655 731 5.25 2,068 -6.64 0.0052
2016-11-02 2016-09-30 13F THERMO ELECTRON COM 883556102 13,924 3,155 29.30 2,215 39.22 0.0062
2016-08-09 2016-06-30 13F THERMO ELECTRON COM 883556102 10,769 91 0.85 1,591 5.22 0.0064
2016-05-17 2016-03-31 13F/A-2 THERMO ELECTRON COM 883556102 10,678 -1,375 -11.41 1,512 -11.58 0.0062
2016-05-12 2016-03-31 13F/A-1 THERMO ELECTRON COM 883556102 10,678 0 1,512 0.0062
2016-05-12 2016-03-31 13F THERMO ELECTRON COM 883556102 10,678 1,512
2016-02-10 2015-12-31 13F THERMO ELECTRON COM 883556102 12,053 5,532 84.83 1,710 114.55 0.0071
2015-11-06 2015-09-30 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 6,521 541 9.05 797 2.05 0.0033
2015-08-14 2015-06-30 13F/A-01 Thermo Fisher Scientific COM 883556102 5,980 4,570 324.11 781 313.23 0.0029
2015-08-07 2015-06-30 13F Thermo Fisher Scientific COM 883556102 5,980 781
2015-05-07 2015-03-31 13F Thermo Fisher Scientific COM 883556102 1,410 -26,457 -94.94 189 -94.59 0.0007
2015-02-11 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 27,867 -2,803 -9.14 3,492 -6.46 0.0129
2014-10-16 2014-09-30 13F THERMO FISHER SCIENTIFIC Common Stock 883556102 30,670 -3,840 -11.13 3,733 -8.35 0.0281
2014-08-08 2014-06-30 13F Thermo Fisher Scientific Common Stock 883556102 34,510 33,150 2,437.50 4,073 2,383.54 0.0276
2014-05-06 2014-03-31 13F Thermo Fisher Scientific Common Stock 883556102 1,360 10 0.74 164 9.33 0.0011
2014-02-12 2013-12-31 13F Thermo Fisher Scientific Common Stock 883556102 1,350 9 0.67 150 21.95 0.0011
2014-03-12 2013-09-30 13F/A-1 Thermo Fisher Scientific Common Stock 883556102 1,341 1,341 123 0.0009
2013-11-12 2013-09-30 13F Thermo Fisher Scientific Common Stock 883556102 1,341 123
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.