Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionLazard Asset Management Llc
Latest Disclosed Ownership1,222,057 shares
Latest Disclosed Value $ 600,677,604
Lazard Asset Management Llc reports 1.00% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - Lazard Asset Management Llc filed a 13F-HR form disclosing ownership of 1,222,057 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $600,677,604 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,234,434 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -1.00% 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 1,222,057 -12,377 -1.00 600,678 -16.02 0.5149
2026-02-17 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,234,434 -348,438 -22.01 715,293 -6.83 1.2119
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,582,872 -17,742 -1.11 767,725 118,375.93 1.0336
2025-08-14 2025-06-30 13F THERMO FISHER Common Stock 883556102 1,600,614 42,767 2.75 649 -16.39 0.8931
2025-05-15 2025-03-31 13F THERMO FISHER Common Stock 883556102 1,557,847 65,732 4.41 775 -0.13 1.1902
2025-02-14 2024-12-31 13F THERMO FISHER Common Stock 883556102 1,492,115 -298,040 -16.65 776 -29.90 1.1355
2024-11-14 2024-09-30 13F THERMO FISHER Common Stock 883556102 1,790,155 -16,900 -0.94 1,107 10.81 1.4808
2024-08-14 2024-06-30 13F THERMO FISHER Common Stock 883556102 1,807,055 -33,397 -1.81 999 -6.55 1.2535
2024-07-09 2024-03-31 13F/A-1 THERMO FISHER Common Stock 883556102 1,840,452 -37,250 -1.98 1,070 7.33 1.3002
2024-05-14 2024-03-31 13F THERMO FISHER Common Stock 883556102 1,840,452 -37,250 1,070 1.2978
2024-02-14 2023-12-31 13F THERMO FISHER Common Stock 883556102 1,877,702 -34,255 -1.79 997 3.00 1.2610
2023-11-14 2023-09-30 13F THERMO FISHER Common Stock 883556102 1,911,957 -49,969 -2.55 968 -5.47 1.3164
2023-08-15 2023-06-30 13F THERMO FISHER Common Stock 883556102 1,961,926 39,591 2.06 1,024 -7.59 1.2599
2023-05-15 2023-03-31 13F THERMO FISHER Common Stock 883556102 1,922,335 46,298 2.47 1,108 -99.89 1.4521
2023-02-15 2022-12-31 13F THERMO FISHER Common Stock 883556102 1,876,037 -2,947 -0.16 1,033,113 8.41 1.4231
2022-11-14 2022-09-30 13F THERMO FISHER Common Stock 883556102 1,878,984 -34,465 -1.80 952,999 -8.32 1.3923
2022-08-09 2022-06-30 13F THERMO FISHER Common Stock 883556102 1,913,449 -50,954 -2.59 1,039,536 -10.41 1.4058
2022-05-13 2022-03-31 13F THERMO FISHER Common Stock 883556102 1,964,403 -92,209 -4.48 1,160,272 -15.45 1.3444
2022-02-09 2021-12-31 13F THERMO FISHER Common Stock 883556102 2,056,612 -30,274 -1.45 1,372,251 15.09 1.4601
2021-11-15 2021-09-30 13F THERMO FISHER Common Stock 883556102 2,086,886 -38,810 -1.83 1,192,299 11.19 1.3453
2021-08-12 2021-06-30 13F THERMO FISHER Common Stock 883556102 2,125,696 158,778 8.07 1,072,348 19.46 1.2035
2021-05-14 2021-03-31 13F THERMO FISHER Common Stock 883556102 1,966,918 -13,150 -0.66 897,660 -2.67 1.0872
2021-02-11 2020-12-31 13F THERMO FISHER Common Stock 883556102 1,980,068 19,391 0.99 922,274 6.54 1.1654
2020-11-13 2020-09-30 13F THERMO FISHER Common Stock 883556102 1,960,677 -123,337 -5.92 865,676 14.64 1.2168
2020-08-13 2020-06-30 13F THERMO FISHER Common Stock 883556102 2,084,014 300,277 16.83 755,120 49.27 1.1607
2020-05-14 2020-03-31 13F THERMO FISHER Common Stock 883556102 1,783,737 -2,941 -0.16 505,867 -12.85 0.9269
2020-02-13 2019-12-31 13F THERMO FISHER Common Stock 883556102 1,786,678 50,694 2.92 580,437 14.79 0.8290
2019-11-14 2019-09-30 13F THERMO FISHER Common Stock 883556102 1,735,984 -187,714 -9.76 505,638 -10.50 0.8309
2019-08-14 2019-06-30 13F THERMO FISHER Common Stock 883556102 1,923,698 -347,706 -15.31 564,950 -9.13 0.9160
2019-08-28 2019-03-31 13F/A-1 THERMO FISHER Common Stock 883556102 2,271,404 73,846 3.36 621,728 26.42 1.0171
2019-05-13 2019-03-31 13F THERMO FISHER Common Stock 883556102 2,271,459 191,972 621,743
2019-08-28 2018-12-31 13F/A-1 THERMO FISHER Common Stock 883556102 2,197,558 282,573 14.76 491,790 5.22 0.9052
2019-02-13 2018-12-31 13F THERMO FISHER Common Stock 883556102 2,079,487 281,221 465,367
2019-08-30 2018-09-30 13F/A-1 THERMO FISHER Common Stock 883556102 1,914,985 455,947 31.25 467,408 54.66 0.7562
2018-11-13 2018-09-30 13F THERMO FISHER Common Stock 883556102 1,798,266 339,228 438,920
2019-08-30 2018-06-30 13F/A-1 THERMO FISHER Common Stock 883556102 1,459,038 21,568 1.50 302,223 1.84 0.5251
2018-08-13 2018-06-30 13F THERMO FISHER Common Stock 883556102 1,358,935 -78,535 281,488
2019-08-28 2018-03-31 13F/A-1 THERMO FISHER Common Stock 883556102 1,437,470 124,631 9.49 296,777 19.05 0.5065
2018-05-14 2018-03-31 13F THERMO FISHER Common Stock 883556102 1,340,241 115,207 276,705
2019-08-28 2017-12-31 13F/A-1 THERMO FISHER Common Stock 883556102 1,312,839 154,794 13.37 249,281 13.77 0.4266
2018-02-13 2017-12-31 13F THERMO FISHER Common Stock 883556102 1,225,034 66,989 232,608
2019-08-19 2017-09-30 13F/A-1 THERMO FISHER Common Stock 883556102 1,158,045 6,789 0.59 219,102 9.08 0.3964
2017-11-13 2017-09-30 13F THERMO FISHER Common Stock 883556102 1,071,327 22,187 202,695
2019-08-19 2017-06-30 13F/A-1 THERMO FISHER Common Stock 883556102 1,151,256 61,943 5.69 200,859 20.05 0.3778
2017-08-11 2017-06-30 13F THERMO FISCHER Common Stock 883556102 1,049,140 -40,173 183,042
2019-08-13 2017-03-31 13F/A-1 THERMO FISHER Common Stock 883556102 1,089,313 -1,577 -0.14 167,317 8.70 0.3158
2017-05-12 2017-03-31 13F THERMO FISCHER Common Stock 883556102 1,001,188 -3,597 153,782
2019-07-30 2016-12-31 13F/A-1 THERMO FISHER Common Stock 883556102 1,090,890 -344,826 -24.02 153,924 -32.60 0.3140
2017-02-13 2016-12-31 13F THERMO FISCHER Common Stock 883556102 1,004,785 -347,386 141,774
2019-08-07 2016-09-30 13F/A-1 THERMO FISHER Common Stock 883556102 1,435,716 -80,178 -5.29 228,364 1.95 0.4538
2016-11-14 2016-09-30 13F THERMO FISCHER Common Stock 883556102 1,352,171 -89,043 215,075
2019-07-29 2016-06-30 13F/A-1 THERMO FISHER Common Stock 883556102 1,515,894 -272,116 -15.22 223,988 -11.52 0.4726
2016-08-15 2016-06-30 13F THERMO FISCHER Common Stock 883556102 1,441,214 -346,796 212,953
2019-07-25 2016-03-31 13F/A-1 THERMO FISHER Common Stock 883556102 1,788,010 283,873 18.87 253,162 18.65 0.5522
2016-05-12 2016-03-31 13F THERMO FISCHER Common Stock 883556102 1,714,969 210,832 242,821
2019-07-24 2015-12-31 13F/A-1 THERMO FISHER Common Stock 883556102 1,504,137 452,609 43.04 213,361 65.94 0.4882
2016-02-12 2015-12-31 13F THERMO FISCHER Common Stock 883556102 1,447,293 395,765 205,298
2019-07-15 2015-09-30 13F/A-1 THERMO FISHER Common Stock 883556102 1,051,528 320,800 43.90 128,580 35.61 0.3074
2015-11-13 2015-09-30 13F THERMO FISCHER Common Stock 883556102 990,136 259,408 121,073
2019-07-08 2015-06-30 13F/A-1 THERMO FISHER Common Stock 883556102 730,728 229,725 45.85 94,818 40.88 0.1988
2015-08-13 2015-06-30 13F THERMO FISCHER Common Stock 883556102 661,617 160,614 85,850
2015-06-09 2015-03-31 13F/A-1 THERMO FISCHER Common Stock 883556102 501,003 -80,569 -13.85 67,304 -7.63 0.1451
2015-05-15 2015-03-31 13F THERMO FISCHER Common Stock 883556102 501,003 67,304
2019-08-29 2014-12-31 13F/A-3 THERMO FISHER Common Stock 883556102 581,572 153,014 35.70 72,865 39.71 0.1556
2015-05-20 2014-12-31 13F/A-1 THERMO FISCHER Common Stock 883556102 507,782 -73,790 63,620 0.1225
2015-06-09 2014-12-31 13F/A-2 THERMO FISCHER Common Stock 883556102 512,232 4,450 64,177 0.1464
2015-02-12 2014-12-31 13F THERMO FISCHER Common Stock 883556102 581,579 72,866
2014-11-07 2014-09-30 13F THERMO FISCHER Common Stock 883556102 428,558 51,952 13.79 52,155 17.36 0.1120
2014-08-12 2014-06-30 13F THERMO FISCHER Common Stock 883556102 376,606 14,295 3.95 44,439 2.01 0.0929
2014-05-12 2014-03-31 13F THERMO FISCHER Common Stock 883556102 362,311 349,791 2,793.86 43,563 3,027.28 0.0973
2014-02-14 2013-12-31 13F THERMO FISCHER Common Stock 883556102 12,520 0 0.00 1,393 20.82 0.0031
2014-01-13 2013-09-30 13F/A-1 THERMO FISCHER Common Stock 883556102 12,520 -500 -3.84 1,153 4.82 0.0027
2013-11-13 2013-09-30 13F THERMO FISCHER Common Stock 883556102 12,520 1,153
2013-08-13 2013-06-30 13F THERMO FISCHER Common Stock 883556102 13,020 13,020 1,100 0.0026
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.