Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionWilliams Jones Wealth Management, LLC.
Latest Disclosed Ownership60,073 shares
Latest Disclosed Value $ 29,527,682
Williams Jones Wealth Management, LLC. reports 22.74% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 5, 2026 - Williams Jones Wealth Management, LLC. filed a 13F-HR form disclosing ownership of 60,073 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $29,527,682 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 77,752 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -22.74% 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)
2026-05-05 2026-03-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 60,073 -17,679 -22.74 29,528 -34.46 0.2555
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 77,752 -2,374 -2.96 45,053 15.93 0.5090
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 80,126 -29,433 -26.86 38,863 -12.51 0.4447
2025-08-14 2025-06-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 109,559 -45,380 -29.29 44,422 -42.38 0.5312
2025-05-15 2025-03-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 154,939 -33,480 -17.77 77,098 -21.35 0.9852
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 188,419 -21,600 -10.28 98,021 -24.55 1.1824
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 210,019 53 0.03 129,911 11.89 1.5232
2024-08-05 2024-06-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 209,966 -7,415 -3.41 116,111 -8.10 1.4407
2024-05-07 2024-03-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 217,381 -943 -0.43 126,344 9.03 1.6082
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 218,324 -4,366 -1.96 115,884 2.81 1.6228
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 222,690 1,973 0.89 112,719 -2.12 1.7324
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 220,717 930 0.42 115,159 -9.09 1.7247
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 219,787 -3,178 -1.43 126,679 3.17 1.9844
2023-02-14 2022-12-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 222,965 -7,248 -3.15 122,785 5.16 2.0561
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 230,213 -3,610 -1.54 116,762 -8.08 2.0323
2022-08-15 2022-06-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 233,823 -7,355 -3.05 127,032 -10.82 2.0560
2022-05-16 2022-03-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 241,178 -8,848 -3.54 142,452 -14.61 1.9845
2022-02-14 2021-12-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 250,026 -1,265 -0.50 166,827 16.20 2.0840
2021-11-15 2021-09-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 251,291 -1,797 -0.71 143,570 12.45 2.0089
2021-08-16 2021-06-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 253,088 17,178 7.28 127,675 18.59 1.7856
2021-05-17 2021-03-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 235,910 422 0.18 107,665 -1.84 1.6839
2021-02-16 2020-12-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 235,488 23,857 11.27 109,686 17.39 1.7888
2020-11-13 2020-09-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 211,631 -5,149 -2.38 93,439 18.96 1.7282
2020-08-14 2020-06-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 216,780 10,461 5.07 78,548 34.24 1.6087
2020-05-15 2020-03-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 206,319 -52,751 -20.36 58,512 -30.48 1.5278
2020-02-14 2019-12-31 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 259,070 1,221 0.47 84,164 12.06 1.6101
2019-11-14 2019-09-30 13F THERMO FISHER SCIENTIFIC INC C CS 883556102 257,849 257,849 75,104 1.5413
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.