Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionTocqueville Asset Management L.p.
Latest Disclosed Ownership85,252 shares
Latest Disclosed Value $ 41,903,965
Tocqueville Asset Management L.p. reports 5.60% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 12, 2026 - Tocqueville Asset Management L.p. filed a 13F-HR form disclosing ownership of 85,252 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $41,903,965 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 80,731 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 5.60% 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)
2026-05-12 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 85,252 4,521 5.60 41,904 -10.42 0.6214
2026-02-12 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 80,731 -4,314 -5.07 46,780 13.41 0.6824
2025-11-13 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 85,045 -12,064 -12.42 41,249 4.76 0.5997
2025-08-12 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 97,109 16,636 20.67 39,374 -1.67 0.5994
2025-05-13 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 80,473 4,790 6.33 40,043 1.70 0.6539
2025-02-10 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 75,683 3,553 4.93 39,373 -11.76 0.6175
2024-11-08 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 72,130 -3,733 -4.92 44,618 6.35 0.7008
2024-08-12 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 75,863 -1,060 -1.38 41,952 -6.16 0.6925
2024-05-09 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 76,923 323 0.42 44,708 9.96 0.7304
2024-02-12 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 76,600 -16,998 -18.16 40,659 -14.18 0.7370
2023-11-09 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 93,598 9,875 11.79 47,377 8.46 0.8998
2023-08-11 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 83,723 7,248 9.48 43,682 -0.90 0.7822
2023-05-10 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 76,475 5,752 8.13 44,078 13.17 0.8327
2023-02-09 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 70,723 -2,035 -2.80 38,946 5.54 0.7397
2022-11-10 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 72,758 -1,115 -1.51 36,902 -8.05 0.7522
2022-08-12 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 73,873 -302 -0.41 40,134 -8.39 0.7339
2022-05-16 2022-03-31 13F Thermo Fisher COM 883556102 74,175 -858 -1.14 43,811 -12.49 0.6619
2022-02-14 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 75,033 -934 -1.23 50,065 15.35 0.6886
2021-11-15 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 75,967 -1,587 -2.05 43,402 10.93 0.6430
2021-08-16 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 77,554 -916 -1.17 39,124 9.25 0.5652
2021-05-17 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 78,470 -816 -1.03 35,812 -3.03 0.5510
2021-02-16 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 79,286 -1,240 -1.54 36,930 3.87 0.6165
2020-11-16 2020-09-30 13F THERMO FISHER COM 883556102 80,526 -2,724 -3.27 35,554 17.87 0.6802
2020-08-12 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 83,250 -2,201 -2.58 30,165 24.47 0.6290
2020-05-15 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 85,451 -5,472 -6.02 24,234 -17.96 0.6021
2020-01-14 2019-12-31 13F Thermo Fisher COM 883556102 90,923 -17,301 -15.99 29,538 -6.29 0.4344
2019-10-31 2019-09-30 13F Thermo Fisher COM 883556102 108,224 -8,204 -7.05 31,522 -7.81 0.4277
2019-07-31 2019-06-30 13F Thermo Fisher COM 883556102 116,428 -729 -0.62 34,193 6.63 0.4431
2019-04-30 2019-03-31 13F Thermo Fisher COM 883556102 117,157 -4,167 -3.43 32,068 18.11 0.4281
2019-02-08 2018-12-31 13F Thermo Fisher COM 883556102 121,324 -24,949 -17.06 27,151 -23.95 0.4069
2018-11-13 2018-09-30 13F Thermo Fisher COM 883556102 146,273 -10,372 -6.62 35,702 10.03 0.4498
2018-08-13 2018-06-30 13F Thermo Fisher COM 883556102 156,645 -11,030 -6.58 32,447 -6.27 0.4116
2018-05-14 2018-03-31 13F Thermo Fisher COM 883556102 167,675 -7,867 -4.48 34,618 3.86 0.4410
2018-02-13 2017-12-31 13F Thermo Fisher COM 883556102 175,542 -34,063 -16.25 33,332 -15.95 0.3784
2017-10-30 2017-09-30 13F Thermo Fisher COM 883556102 209,605 -9,839 -4.48 39,657 3.58 0.4561
2017-08-04 2017-06-30 13F Thermo Fisher COM 883556102 219,444 -5,911 -2.62 38,286 10.61 0.4593
2017-04-28 2017-03-31 13F Thermo Fisher COM 883556102 225,355 -16,254 -6.73 34,615 1.54 0.4224
2017-01-30 2016-12-31 13F Thermo Fisher COM 883556102 241,609 17,750 7.93 34,091 -4.26 0.4359
2016-10-31 2016-09-30 13F Thermo Fisher COM 883556102 223,859 -11,517 -4.89 35,607 2.38 0.4275
2016-08-15 2016-06-30 13F/A-1 Thermo Fisher COM 883556102 235,376 1,564 0.67 34,779 5.06 0.4144
2016-07-29 2016-06-30 13F Thermo Fisher COM 883556102 235,736 34,832
2016-04-29 2016-03-31 13F Thermo Fisher COM 883556102 233,812 14,782 6.75 33,105 6.55 0.4385
2016-01-29 2015-12-31 13F Thermo Fisher COM 883556102 219,030 25,024 12.90 31,069 30.97 0.4212
2015-10-30 2015-09-30 13F Thermo Fisher COM 883556102 194,006 8,180 4.40 23,723 -1.62 0.3174
2015-07-31 2015-06-30 13F Thermo Fisher COM 883556102 185,826 65,872 54.91 24,113 49.63 0.2840
2015-04-30 2015-03-31 13F Thermo Fisher COM 883556102 119,954 119,954 0.00 16,115 0.1894
2015-01-30 2014-12-31 13F Thermo Fisher COM 883556102 0 -58,266 -100.00 0 -100.00
2014-10-30 2014-09-30 13F Thermo Fisher COM 883556102 58,266 1,806 3.20 7,091 6.44 0.0787
2014-09-18 2014-06-30 13F/A-1 Thermo Fisher COM 883556102 56,460 9,130 19.29 6,662 17.06 0.0648
2014-07-30 2014-06-30 13F Thermo Fisher COM 883556102 56,460 6,662
2014-04-30 2014-03-31 13F Thermo Fisher COM 883556102 47,330 -8,525 -15.26 5,691 -8.49 0.0749
2014-01-30 2013-12-31 13F Thermo Fisher COM 883556102 55,855 -2,743 -4.68 6,219 15.17 0.0836
2013-10-30 2013-09-30 13F Thermo Fisher COM 883556102 58,598 -57,858 -49.68 5,400 -45.21 0.0673
2013-07-30 2013-06-30 13F Thermo Fisher COM 883556102 116,456 116,456 9,856 0.1334
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.