賽默飛世爾科技公司
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionTd Asset Management Inc
Latest Disclosed Ownership479,855 shares
Latest Disclosed Value $ 235,863,128
Td Asset Management Inc reports 31.22% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 11, 2026 - Td Asset Management Inc filed a 13F-HR form disclosing ownership of 479,855 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $235,863,128 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 697,688 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -31.22% 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)
2026-05-11 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 479,855 -217,833 -31.22 235,863 -41.66 0.1023
2026-02-10 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 697,688 302,676 76.62 404,275 111.01 0.3252
2025-11-10 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 395,012 5,388 1.38 191,589 21.28 0.1556
2025-07-28 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 389,624 -55,094 -12.39 157,977 -28.61 0.1348
2025-05-07 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 444,718 -41,480 -8.53 221,292 -12.51 0.2037
2025-02-11 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 486,198 -71,630 -12.84 252,935 -26.20 0.2238
2024-11-01 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 557,828 -44,739 -7.42 342,741 2.86 0.3025
2024-08-02 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 602,567 14,089 2.39 333,220 -2.58 0.3107
2024-05-08 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 588,478 -177,505 -23.17 342,029 -15.88 0.3182
2024-02-12 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 765,983 -346,198 -31.13 406,576 -27.78 0.3998
2023-10-27 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,112,181 87,910 8.58 562,953 5.34 0.6820
2023-08-09 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,024,271 69,073 7.23 534,413 -2.93 0.6086
2023-05-10 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 955,198 8,111 0.86 550,547 5.56 0.6644
2023-02-07 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 947,087 117,652 14.18 521,551 21.72 0.6436
2022-11-07 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 829,435 228,567 38.04 428,494 31.26 0.5365
2022-08-04 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 600,868 345 0.06 326,440 -7.97 0.3782
2022-05-10 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 600,523 -15,040 -2.44 354,699 -13.64 0.2095
2022-05-10 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 590,214 348,610
2022-02-10 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 615,563 109,315 21.59 410,728 42.00 0.3439
2021-11-09 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 506,248 843 0.17 289,235 5.98 0.3003
2021-08-11 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 505,405 -334,849 -39.85 272,923 -28.83 0.2771
2021-05-14 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 840,254 -50,791 -5.70 383,476 -7.60 0.4286
2021-02-16 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 891,045 -225,418 -20.19 415,030 -15.81 0.5039
2020-11-10 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,116,463 -44,648 -3.85 492,941 17.17 0.6838
2020-08-13 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,161,111 269,486 30.22 420,717 66.38 0.5985
2020-05-15 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 891,625 60,855 7.33 252,865 -6.31 0.4279
2020-02-11 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 830,770 70,493 9.27 269,893 21.88 0.3918
2019-11-07 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 760,277 60,064 8.58 221,446 7.69 0.3385
2019-08-01 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 700,213 1,047 0.15 205,638 7.45 0.3079
2019-05-08 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 699,166 232,950 49.97 191,376 83.43 0.2921
2019-02-01 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 466,216 137,656 41.90 104,334 30.10 0.1815
2018-11-01 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 328,560 23,193 7.60 80,195 26.78 0.1186
2018-07-31 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 305,367 -19,488 -6.00 63,254 -5.69 0.0964
2018-05-11 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 324,855 14,916 4.81 67,070 13.97 0.1027
2018-02-02 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 309,939 -342 -0.11 58,851 0.25 0.0857
2017-11-09 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 310,281 -8,775 -2.75 58,705 5.46 0.0880
2017-08-01 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 319,056 -41,440 -11.50 55,665 0.53 0.0877
2017-05-05 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 360,496 -20,440 -5.37 55,372 3.02 0.0883
2017-02-08 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 380,936 -72,791 -16.04 53,750 -25.52 0.0906
2016-11-02 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 453,727 2,097 0.46 72,170 8.15 0.1249
2016-08-04 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 451,630 -37,395 -7.65 66,733 -3.62 0.1210
2016-05-05 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 489,025 -25,803 -5.01 69,241 -5.19 0.1295
2016-02-04 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 514,828 59,745 13.13 73,028 31.23 0.1449
2015-11-12 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 455,083 94,200 26.10 55,648 18.83 0.1096
2015-08-11 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 360,883 2,829 0.79 46,828 -2.65 0.0836
2015-04-28 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 358,054 358,054 0.00 48,101 0.0868
2015-01-30 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -368,227 -100.00 0 -100.00
2014-11-06 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 368,227 -3,432 -0.92 44,813 2.18 0.0773
2014-08-12 2014-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 371,659 -19,700 -5.03 43,856 -6.80 0.0747
2014-05-09 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 391,359 -167,300 -29.95 47,057 -24.35 0.0856
2014-02-07 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 558,659 3,560 0.64 62,207 21.61 0.1162
2013-11-08 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 555,099 9,800 1.80 51,152 10.84 0.1016
2013-07-24 2013-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 545,299 545,299 46,149 0.0990
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.