Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionCandriam Luxembourg S.C.A.
Latest Disclosed Ownership354,087 shares
Latest Disclosed Value $ 174,044,383
Candriam Luxembourg S.C.A. reports 18.93% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On April 30, 2026 - Candriam Luxembourg S.C.A. filed a 13F-HR form disclosing ownership of 354,087 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $174,044,383 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on April 30, 2026 disclosing 297,719 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 18.93% 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 354,087 56,368 18.93 174,044 0.88 0.9041
2026-04-30 2025-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 297,719 25,605 9.41 172,521 30.72 0.8603
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 297,719 25,605 172,521 0.8591
2025-11-06 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 272,114 -65,359 -19.37 131,981 -3.55 0.6909
2025-08-08 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 337,473 -84,881 -20.10 136,838 -34.89 0.7890
2025-05-14 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 422,354 14,864 3.65 210,164 -0.86 1.3163
2025-02-07 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 407,490 78,512 23.87 211,989 4.18 1.2208
2024-11-13 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 328,978 -102,680 -23.79 203,487 -14.75 1.1693
2024-08-05 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 431,658 4,571 1.07 238,696 -3.84 1.4468
2024-05-06 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 427,087 -68,180 -13.77 248,227 -5.58 1.5874
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 495,267 37,855 8.28 262,895 13.55 1.8146
2023-11-13 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 457,412 -8,595 -1.84 231,528 -4.78 1.6409
2023-08-08 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 466,007 13,304 2.94 243,139 1.24 1.7572
2023-05-12 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 452,703 13,509 3.08 240,163 -0.70 1.6658
2023-02-13 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 439,194 11,330 2.65 241,848 11.44 1.6315
2022-11-10 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 427,864 23,598 5.84 217,020 -1.18 1.5289
2022-08-03 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 404,266 20,224 5.27 219,619 -3.18 1.8085
2022-05-13 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 384,042 -36,750 -8.73 226,825 -19.21 1.5435
2022-02-10 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 420,792 54,977 15.03 280,770 34.34 1.7920
2021-11-09 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 365,815 12,692 3.59 208,992 17.32 1.4207
2021-07-20 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 353,123 -12,703 -3.47 178,140 8.85 1.2194
2021-04-29 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 365,826 -6 -0.00 163,657 -3.95 1.3622
2021-01-22 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 365,832 16,594 4.75 170,385 10.50 1.3483
2020-10-19 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 349,238 82,897 31.12 154,189 59.76 1.4484
2020-07-23 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 266,341 112,713 73.37 96,510 97.82 1.0187
2020-05-26 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 153,628 29 0.02 48,787 -2.23 0.5407
2020-02-05 2019-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 153,599 49,530 47.59 49,900 64.62 0.5348
2020-01-21 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 153,599 49,530 50 536,250.5363
2020-02-05 2019-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 104,069 10,569 11.30 30,312 10.87 0.4017
2019-10-21 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 104,069 10,569 30 377,026.5175
2019-08-01 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 93,500 20,429 27.96 27,339 36.68 0.3410
2019-05-02 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 73,071 -14,335 -16.40 20,002 2.26 0.2559
2019-02-14 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 87,406 7,788 9.78 19,560 0.65 0.3006
2018-11-07 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 79,618 22,488 39.36 19,433 64.21 0.2583
2018-08-14 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 57,130 9,202 19.20 11,834 19.58 0.1873
2018-05-09 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 47,928 698 1.48 9,896 10.35 0.1688
2018-02-07 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 47,230 406 0.87 8,968 1.23 0.1552
2017-11-03 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 46,824 -5,440 -10.41 8,859 -2.85 0.1548
2017-07-31 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 52,264 -3,989 -7.09 9,119 5.53 0.1714
2017-04-21 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 56,253 -37,194 -39.80 8,641 -34.46 0.1673
2017-02-01 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 93,447 3,420 3.80 13,185 -7.93 0.3026
2016-11-15 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 90,027 5,621 6.66 14,320 14.82 0.3444
2016-07-26 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 84,406 46,586 123.18 12,472 134.17 0.3243
2016-04-27 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 37,820 3,190 9.21 5,326 8.43 0.1332
2016-01-25 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 34,630 -47,913 -58.05 4,912 -51.34 0.1314
2015-10-19 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 82,543 4,167 5.32 10,094 -0.75 0.2478
2015-07-29 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 78,376 37,748 92.91 10,170 86.30 0.2117
2015-05-28 2015-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 40,628 5,460 15.53 5,459 23.90 0.1100
2015-04-27 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 40,628 5,458
2015-05-28 2014-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 35,168 35,168 4,406 0.0921
2015-03-26 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 35,168 35,168 4,406 0.0892
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.