Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionSummit Global Investments
Latest Disclosed Ownership1,683 shares
Latest Disclosed Value $ 827
Summit Global Investments reports 9.37% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 7, 2026 - Summit Global Investments filed a 13F-HR form disclosing ownership of 1,683 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $827 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,857 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -9.37% 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)
2026-05-07 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,683 -174 -9.37 1 -100.00 0.0488
2026-02-17 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,857 1,857 1 0.0636
2025-02-11 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -443 -100.00 0 0.0000
2024-10-31 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 443 -1 -0.23 0 0.0175
2024-07-22 2024-06-30 13F THERMO FISHER SCIENTIFIC INC C OM 883556102 444 -160 -26.49 0 0.0166
2024-04-29 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 604 -749 -55.36 0 0.0261
2024-02-06 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,353 -39 -2.80 1 0.0470
2023-10-16 2023-09-30 13F THERMO FISHER SCIENTIFIC INC C OM 883556102 1,392 303 27.82 1 0.0469
2023-07-19 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,089 -3 -0.27 1 0.0376
2023-05-04 2023-03-31 13F THERMO FISHER SCIENTIFIC INC C OM 883556102 1,092 283 34.98 1 0.0487
2023-01-31 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 809 9 1.12 0 -100.00 0.0376
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 800 7 0.88 406 -5.80 0.0375
2022-08-23 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 793 -18 -2.22 431 -10.02 0.0380
2022-04-29 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 811 194 31.44 479 16.26 0.0353
2022-02-14 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 617 25 4.22 412 21.89 0.0264
2021-11-08 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 592 4 0.68 338 13.42 0.0253
2022-01-28 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 588 -121 -17.07 298 -8.02 0.0178
2022-01-27 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 709 113 18.96 324 16.97 0.0208
2021-02-11 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 596 105 21.38 277 27.65 0.0277
2020-11-16 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 491 491 217 0.0224
2018-08-10 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -3,736 -100.00 0 -100.00
2018-05-03 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,736 -123 -3.19 771 5.18 0.1227
2018-02-14 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,859 -3,301 -46.10 733 -45.90 0.1135
2017-11-14 2017-09-30 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 7,160 3,630 102.83 1,355 119.97 0.2119
2017-08-10 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,530 780 28.36 616 45.97 0.1844
2017-05-16 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,750 250 10.00 422 19.55 0.1375
2017-02-15 2016-12-31 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 2,500 2,500 353 0.1282
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.