써모 피셔 사이언티픽(주)
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionRosenberg Matthew Hamilton
Latest Disclosed Ownership1,161 shares
Latest Disclosed Value $ 570,666
Rosenberg Matthew Hamilton reports 7.20% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On April 6, 2026 - Rosenberg Matthew Hamilton filed a 13F-HR form disclosing ownership of 1,161 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $570,666 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 5, 2026 disclosing 1,083 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 7.20% 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)
2026-04-06 2026-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,161 78 7.20 571 -9.09 0.1169
2026-01-05 2025-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,083 29 2.75 628 22.70 0.1300
2025-11-10 2025-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,054 -112 -9.61 511 8.26 0.1105
2025-07-28 2025-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,166 229 24.44 473 1.29 0.1100
2025-04-28 2025-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 937 279 42.40 466 36.26 0.1170
2025-01-14 2024-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 658 83 14.43 343 -3.66 0.0890
2024-10-28 2024-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 575 11 1.95 356 16.39 0.0931
2024-07-26 2024-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 564 74 15.10 306 7.77 0.0903
2024-04-22 2024-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 490 -36 -6.84 283 1.43 0.0818
2024-01-16 2023-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 526 19 3.75 279 8.98 0.0859
2023-10-11 2023-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 507 45 9.74 257 6.22 0.0856
2023-07-26 2023-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 462 -129 -21.83 241 -29.12 0.0816
2023-04-17 2023-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 591 5 0.85 341 5.59 0.1100
2023-01-19 2022-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 586 -7 -1.18 323 6.98 0.1094
2022-10-21 2022-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 593 27 4.77 301 -3.22 0.1164
2022-07-15 2022-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 566 75 15.27 311 7.24 0.1173
2022-04-14 2022-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 491 38 8.39 290 -4.29 0.1014
2022-01-20 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 453 168 58.95 303 85.89 0.1078
2021-10-12 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 285 121 73.78 163 96.39 0.0644
2021-07-26 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 164 0 0.00 83 10.67 0.0432
2021-04-30 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 164 0 0.00 75 -1.32 0.0428
2021-02-03 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 164 0 0.00 76 5.56 0.0474
2020-10-16 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 164 0 0.00 72 22.03 0.0529
2020-08-04 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 164 164 59 0.0470
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.