Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionStoneX Group Inc.
Latest Disclosed Ownership1,890 shares
Latest Disclosed Value $ 929,542
StoneX Group Inc. reports 45.98% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 14, 2026 - StoneX Group Inc. filed a 13F-HR form disclosing ownership of 1,890 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $929,542 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 3,499 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -45.98% 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)
2026-05-14 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,890 -1,609 -45.98 930 -54.24 0.0500
2026-02-12 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,499 -401 -10.28 2,030 7.24 0.0881
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,900 -83 -2.08 1,893 17.14 0.0825
2025-08-13 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,983 -21 -0.52 1,617 -18.96 0.0786
2025-08-13 2025-03-31 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 4,004 694 20.97 1,994 15.80 0.8129
2025-08-13 2024-12-31 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 3,310 512 18.30 1,723 -0.52 0.6814
2025-08-13 2024-09-30 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 2,798 358 14.67 1,732 28.22 0.7766
2025-08-13 2024-06-30 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 2,440 448 22.49 1,350 16.58 0.6314
2025-08-13 2024-03-31 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 1,992 240 13.70 1,158 24.52 0.5982
2025-08-13 2023-12-31 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 1,752 198 12.74 930 18.17 0.4970
2025-08-13 2023-09-30 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 1,554 60 4.02 787 1.03 0.4354
2025-08-13 2023-06-30 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 1,494 -70 -4.48 780 -13.54 0.4396
2025-08-13 2023-03-31 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 1,564 234 17.59 902 22.92 0.5364
2025-08-13 2022-12-31 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 1,330 -31 -2.28 733 6.23 0.1067
2025-08-13 2022-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 1,361 -533 -28.14 691 -32.94 0.3606
2022-11-08 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,359 -535 690 0.3656
2025-08-13 2022-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 1,894 223 13.35 1,029 4.26 0.4983
2022-07-27 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,614 -57 877 0.4485
2025-08-13 2022-03-31 13F/A-4 THERMO FISHER SCIENTIFIC COM 883556102 1,671 465 38.56 987 22.61 0.0933
2025-08-13 2021-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 1,206 185 18.12 805 37.84 0.0962
2022-02-10 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,206 185 805 0.0962
2021-10-20 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,021 97 10.50 584 25.32 0.0840
2021-08-06 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 924 167 22.06 466 34.68 0.0691
2021-06-30 2021-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 757 26 3.56 346 1.47 0.0621
2021-06-23 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 757 26 346 0.0635
2021-02-03 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 731 141 23.90 341 30.65 0.0750
2020-11-12 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 590 590 261 0.0840
2017-11-14 2017-09-30 13F/A-1 THERMO FISHER SCIENTIFIC C 883556102 0 -1,581 -100.00 0 -100.00
2017-08-31 2017-06-30 13F THERMO FISHER SCIENTIFIC C 883556102 1,581 1,581 276 0.0862
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.