Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionSchroder Investment Management Group
Latest Disclosed Ownership1,728,440 shares
Latest Disclosed Value $ 849,580,113
Schroder Investment Management Group reports 0.66% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 14, 2026 - Schroder Investment Management Group filed a 13F-HR form disclosing ownership of 1,728,440 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $849,580,113 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,739,902 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -0.66% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-14 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,728,440 -11,462 -0.66 849,580 -15.73 0.6966
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,739,902 14,555 0.84 1,008,186 20.48 0.7643
2025-11-13 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,725,347 113,161 7.02 836,828 28.02 0.6547
2025-08-13 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,612,186 -31,597 -1.92 653,677 -20.08 0.5525
2025-05-13 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,643,783 -35,197 -2.10 817,946 -6.36 0.8257
2025-02-12 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,678,980 69,885 4.34 873,456 -12.25 0.8369
2024-11-13 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,609,095 15,951 1.00 995,338 12.98 1.0201
2024-08-12 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,593,144 117,838 7.99 881,009 2.75 0.9716
2024-05-14 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,475,306 169,863 13.01 857,463 23.75 1.0086
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,305,443 162,538 14.22 692,916 19.78 0.8983
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,142,905 48,593 4.44 578,504 1.32 0.8607
2023-08-11 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,094,312 3,375 0.31 570,957 -9.20 0.8191
2023-05-11 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,090,937 -63,998 -5.54 628,783 -1.14 0.9353
2023-02-10 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,154,935 -18,380 -1.57 636,011 6.88 1.0097
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,173,315 44,126 3.91 595,093 -3.00 0.9847
2022-08-11 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,129,189 69,835 6.59 613,467 -1.96 0.9345
2022-05-16 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,059,354 58,654 5.86 625,707 -6.29 0.8265
2022-02-14 2021-12-31 13F Thermo Fisher Scientific COM 883556102 1,000,700 125,990 14.40 667,706 33.61 0.8720
2021-11-12 2021-09-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 874,710 3,021 0.35 499,748 13.65 0.7685
2021-08-13 2021-06-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 871,689 46,564 5.64 439,742 16.78 0.5508
2021-05-28 2021-03-31 13F/A-1 THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 825,125 -224,447 -21.38 376,572 77,066.39 0.4885
2021-05-17 2021-03-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 825,125 -224,447 376,572 0.4885
2021-02-24 2020-12-31 13F/A-1 THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,049,572 8,461 0.81 489 -99.89 0.6904
2021-02-16 2020-12-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,049,572 8,461 489 0.6825
2020-11-13 2020-09-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,041,111 173,431 19.99 452,945 44.07 0.7243
2020-08-13 2020-06-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 867,680 -5,990 -0.69 314,395 18.37 0.5703
2020-05-15 2020-03-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 873,670 16,711 1.95 265,595 -4.60 0.5681
2020-02-11 2019-12-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 856,959 -279,464 -24.59 278,400 -14.76 0.4535
2019-11-12 2019-09-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,136,423 154,204 15.70 326,608 13.23 0.5759
2019-11-14 2019-06-30 13F/A-2 THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 982,219 25,662 2.68 288,458 10.17 0.5245
2019-08-15 2019-06-30 13F/A-1 THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 982,219 0 288,458 0.3094
2019-08-08 2019-06-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 982,219 25,662 288,458 309,472.6141
2019-11-15 2019-03-31 13F/A-1 THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 956,557 -41,376 -4.15 261,829 17.24 0.4662
2019-05-14 2019-03-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 956,557 -41,376 261,829 425,264.1974
2019-02-14 2018-12-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 997,933 -313,953 -23.93 223,327 -30.25 0.4040
2018-11-13 2018-09-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,311,886 40,386 3.18 320,205 22.48 0.5500
2018-08-23 2018-06-30 13F/A-2 THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,271,500 56,551 4.65 261,432 4.22 0.4577
2018-08-16 2018-06-30 13F/A-1 THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,271,500 0 261,432 0.4577
2018-08-13 2018-06-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,271,500 56,551 261,432 462,922.8676
2018-05-11 2018-03-31 13F/A-1 THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,214,949 111,264 10.08 250,839 19.69 0.4347
2018-05-11 2018-03-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,214,949 111,264 250,839 434,683.5159
2018-02-09 2017-12-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,103,685 242,062 28.09 209,568 30.45 0.3430
2017-11-09 2017-09-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 861,623 -35,843 -3.99 160,649 2.94 0.2791
2017-08-10 2017-06-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 897,466 -133,919 -12.98 156,062 -1.69 0.2813
2017-05-18 2017-03-31 13F/A-1 THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,031,385 -57,472 -5.28 158,741 3.32 0.2853
2017-05-10 2017-03-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,031,385 -57,472 158,741 285,335.9749
2017-02-10 2016-12-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,088,857 -392,606 -26.50 153,637 -34.80 0.2941
2016-11-09 2016-09-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,481,463 -197,590 -11.77 235,641 -5.02 0.4400
2016-08-08 2016-06-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,679,053 85,133 5.34 248,097 10.56 0.4982
2016-05-10 2016-03-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,593,920 -19,850 -1.23 224,408 -1.97 0.4639
2016-02-10 2015-12-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,613,770 36,326 2.30 228,913 18.68 0.4723
2015-11-13 2015-09-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,577,444 -117,324 -6.92 192,889 -12.08 0.4079
2015-08-10 2015-06-30 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,694,768 -62,611 -3.56 219,387 -6.62 0.4312
2015-05-12 2015-03-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,757,379 115,714 7.05 234,944 14.23 0.4593
2015-02-18 2014-12-31 13F/A-1 THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,641,665 153,805 205,684 0.4033
2015-02-25 2014-12-31 13F/A-2 THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,641,665 153,805 10.34 205,684 13.59 0.4037
2015-02-17 2014-12-31 13F THERMO FISHER SCIENTIFIC INCORPORATED USD1 COM 883556102 1,641,665 153,805 205,684 298,661.0233
2014-11-13 2014-09-30 13F ThermoFisherScient.ComStk USD1 COM 883556102 1,487,860 441,608 42.21 181,073 46.67 0.2417
2014-08-13 2014-06-30 13F ThermoFisherScient ComStk USD1 COM 883556102 1,046,252 139,367 15.37 123,458 13.22 0.1534
2014-05-15 2014-03-31 13F ThermoFisherScient.ComStk USD1 COM 883556102 906,885 10,342 1.15 109,044 9.23 0.1229
2014-02-14 2013-12-31 13F ThermoFisherScient.ComStk USD1 COM 883556102 896,543 187,171 26.39 99,830 52.72 0.1247
2013-12-09 2013-09-30 13F/A-1 ThermoFisherScient.ComStk USD1 COM 883556102 65,368,630 65,323,495 6,023,719 0.1815
2013-12-10 2013-09-30 13F/A-2 ThermoFisherScient.ComStk USD1 COM 883556102 709,372 664,237 1,471.67 65,369 1,611.65 0.1587
2013-11-08 2013-09-30 13F ThermoFisherScient.ComStk USD1 COM 883556102 706,322 661,187 65,088 160.6126
2013-08-12 2013-06-30 13F ThermoFisherScient.ComStk USD1 COM 883556102 45,135 45,135 3,820 0.0101
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.