Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionQtron Investments LLC
Latest Disclosed Ownership3,112 shares
Latest Disclosed Value $ 1,529,641
Qtron Investments LLC reports 21.24% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - Qtron Investments LLC filed a 13F-HR form disclosing ownership of 3,112 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $1,529,641 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 3,951 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -21.24% 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 3,112 -839 -21.24 1,530 -33.20 0.2074
2026-02-12 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,951 -317 -7.43 2,289 10.58 0.2976
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,268 -974 -18.58 2,070 -2.59 0.2563
2025-08-13 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 5,242 0 0.00 2,125 -18.52 0.2715
2025-05-13 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 5,242 729 16.15 2,608 11.12 0.3905
2025-02-13 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,513 -158 -3.38 2,348 -18.76 0.3297
2024-11-13 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,671 983 26.65 2,889 41.69 0.3948
2024-08-12 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,688 0 0.00 2,039 -4.85 0.2948
2024-05-14 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,688 553 17.64 2,144 28.79 0.3037
2024-02-12 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,135 0 0.00 1,664 4.92 0.2728
2023-11-13 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,135 0 0.00 1,587 -3.00 0.3026
2023-08-10 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,135 -673 -17.67 1,636 -25.48 0.3104
2023-05-11 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,808 588 18.26 2,195 23.75 0.4512
2023-02-13 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,220 -582 -15.31 1,773 -8.04 0.3725
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,802 0 0.00 1,928 -6.68 0.4793
2022-08-10 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,802 -403 -9.58 2,066 -16.83 0.4542
2022-05-05 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,205 90 2.19 2,484 -9.54 0.5553
2022-02-16 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,115 424 11.49 2,746 30.20 0.6203
2021-11-12 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,691 1,457 65.22 2,109 87.13 0.5674
2021-08-11 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,234 -344 -13.34 1,127 -4.25 0.2856
2021-05-13 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,578 -767 -22.93 1,177 -24.45 0.3287
2021-02-12 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,345 545 19.46 1,558 26.05 0.4166
2020-11-12 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,800 517 22.65 1,236 49.46 0.4304
2020-08-13 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,283 -946 -29.30 827 -9.72 0.3309
2020-05-14 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,229 400 14.14 916 -0.33 0.5512
2020-02-12 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,829 2,829 919 0.5301
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.