써모 피셔 사이언티픽(주)
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionGreat Valley Advisor Group, Inc.
Latest Disclosed Ownership8,058 shares
Latest Disclosed Value $ 3,960,831
Great Valley Advisor Group, Inc. reports 9.28% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 11, 2026 - Great Valley Advisor Group, Inc. filed a 13F-HR form disclosing ownership of 8,058 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $3,960,831 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 7,374 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 9.28% 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)
2026-05-11 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,058 684 9.28 3,961 -7.30 0.0720
2026-02-12 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,374 106 1.46 4,273 21.19 0.0821
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,268 1,452 24.97 3,525 49.55 0.0707
2025-08-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 5,816 -7,736 -57.08 2,358 -65.05 0.0522
2025-05-08 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,552 1,443 11.92 6,743 7.05 0.1451
2025-02-24 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 12,109 486 4.18 6,299 -12.38 0.1410
2024-11-12 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,623 739 6.79 7,189 19.44 0.1767
2024-07-16 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 10,884 850 8.47 6,020 3.21 0.1684
2024-05-06 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 10,034 338 3.49 5,832 13.33 0.1771
2024-02-06 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 9,696 1,467 17.83 5,147 23.55 0.1806
2023-11-07 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,229 624 8.21 4,166 4.96 0.1727
2023-08-10 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,605 813 11.97 3,968 1.38 0.1663
2023-05-03 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,792 -271 -3.84 3,914 0.64 0.1825
2023-02-01 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,063 3,214 83.50 3,890 99.13 0.1988
2022-10-21 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,849 -26 -0.67 1,953 -7.26 0.1094
2022-07-19 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,875 710 22.43 2,106 11.31 0.1157
2022-04-20 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,165 526 19.93 1,892 7.87 0.1103
2022-02-10 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,639 739 38.89 1,754 61.66 0.1084
2021-10-14 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,900 -49 -2.51 1,085 10.71 0.0748
2021-07-27 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,949 210 12.08 980 23.43 0.0725
2021-04-20 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,739 291 20.10 794 17.63 0.0764
2021-01-29 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,448 102 7.58 675 13.64 0.0698
2020-10-21 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,346 -188 -12.26 594 6.64 0.0729
2020-07-31 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,534 -17 -1.10 557 26.59 0.0912
2020-05-15 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,551 -225 -12.67 440 -23.74 0.1165
2020-02-10 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,776 230 14.88 577 28.22 0.1285
2019-10-25 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,546 109 7.59 450 6.64 0.1086
2019-07-30 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,437 -87 -5.71 422 1.20 0.1060
2019-04-26 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,524 85 5.91 417 29.50 0.1327
2019-04-11 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,439 1,439 322 0.1203
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.