Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionAPG Asset Management N.V.
Latest Disclosed Ownership932,138 shares
Latest Disclosed Value $ 397,651,268
APG Asset Management N.V. reports 2.78% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 13, 2026 - APG Asset Management N.V. filed a 13F-HR form disclosing ownership of 932,138 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $397,651,268 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 906,926 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 2.78% 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)
2026-05-13 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 932,138 25,212 2.78 397,651 -11.13 1.2600
2026-02-12 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 906,926 58,192 6.86 447,459 27.72 1.2699
2025-11-12 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 848,734 229,028 36.96 350,343 63.67 0.9833
2025-08-12 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 619,706 237,510 62.14 214,053 21.58 0.6338
2025-05-14 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 382,196 13,806 3.75 176,061 -4.87 0.5461
2025-02-13 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 368,390 347,975 1,704.51 185,077 1,535.68 0.5155
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 20,415 -240,414 -92.17 11,315 -91.59 0.0751
2024-08-14 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 260,829 3,098 1.20 134,582 -2.97 0.2401
2024-05-14 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 257,731 -35,397 -12.08 138,700 -1.53 0.2430
2024-02-13 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 293,128 -12,830 -4.19 140,850 -9.05 0.2747
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 305,958 -38,793 -11.25 154,867 -6.07 0.3167
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 344,751 -9,434 -2.66 164,871 -12.26 0.3326
2023-05-12 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 354,185 -60,639 -14.62 187,898 82,310.96 0.3987
2023-02-14 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 414,824 320,245 338.60 228 -99.53 0.4343
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 94,579 16,797 21.59 48,966 21.14 0.1263
2022-08-12 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 77,782 6,880 9.70 40,420 7.39 0.0947
2022-05-12 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 70,902 -28,427 -28.62 37,638 -35.42 0.0711
2022-02-11 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 99,329 22,945 30.04 58,280 54.77 0.0990
2021-11-15 2021-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 76,384 -6,300 -7.62 37,655 7.06 0.0669
2021-11-15 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 76,384 -6,300 37,655 0.0677
2021-08-13 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 82,684 -43,954 -34.71 35,173 -28.47 0.0597
2021-05-14 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 126,638 -196,420 -60.80 49,175 -60.01 0.0839
2021-02-12 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 323,058 -53,608 -14.23 122,981 -13.28 0.2006
2020-11-12 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 376,666 11,193 3.06 141,820 20.28 0.2455
2020-08-14 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 365,473 6,400 1.78 117,905 15.78 0.2149
2020-05-19 2020-03-31 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 359,073 36,357 11.27 101,833 9.03 0.1996
2020-05-15 2020-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 359,073 0 101,833 0.2016
2020-05-14 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 136,759 -185,957 33,338 62,374.1450
2020-02-13 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 322,716 45,761 16.52 93,399 26.23 0.1517
2019-11-08 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 276,955 60,496 27.95 73,994 32.55 0.1219
2019-08-13 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 216,459 79,700 58.28 55,822 67.44 0.0958
2019-05-14 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 136,759 -19,000 -12.20 33,338 9.33 0.0612
2019-02-19 2018-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 155,759 25,100 19.21 30,492 11.05 0.0620
2019-02-13 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 155,759 25,100 30,492
2018-11-09 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 130,659 1,000 0.77 27,457 19.36 0.0481
2018-08-13 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 129,659 -16,700 -11.41 23,003 -6.38 0.0423
2018-05-14 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 146,359 -300 -0.20 24,570 5.95 0.0475
2018-02-21 2017-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 146,659 5,580 3.96 23,191 -13.12 0.0424
2018-01-24 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 146,659 5,580 23,191
2017-10-19 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 141,079 18,900 15.47 26,692 25.21 0.0440
2017-07-21 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 122,179 -145,848 -54.42 21,317 -48.22 0.0387
2017-05-01 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 268,027 -464,213 -63.40 41,169 -57.97 0.0754
2017-01-30 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 732,240 25,700 3.64 97,956 -12.84 0.1842
2016-10-31 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 706,540 119,500 20.36 112,382 29.56 0.1975
2016-08-11 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 587,040 109,307 22.88 86,741 28.24 0.1632
2016-05-16 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 477,733 121,322 34.04 67,642 33.80 0.1403
2016-02-17 2015-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 356,411 -49,143 -12.12 50,557 1.95 0.1164
2016-02-16 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 887,660 50,557
2015-11-12 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 405,554 -51,402 -11.25 49,591 -16.37 0.1136
2015-08-12 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 456,956 0 0.00 59,295 -3.41 0.1189
2015-05-14 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 456,956 8,178 1.82 61,387 9.18 0.1269
2015-02-09 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 448,778 48,938 12.24 56,227 15.55 0.1078
2014-11-12 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 399,840 31,332 8.50 48,661 11.91 0.0984
2014-08-11 2014-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 368,508 116,809 46.41 43,484 43.68 0.0928
2014-04-30 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 251,699 3,360 1.35 30,264 9.44 0.0791
2014-02-20 2013-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 248,339 -129,561 -34.28 27,653 -20.59 0.0813
2014-02-12 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 248,339 27,653
2013-11-13 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 377,900 -62,597 -14.21 34,823 -6.59 0.1100
2013-08-14 2013-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 440,497 440,497 37,279 0.1164
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.