Thermo Fisher Scientific Inc.
US ˙ NYSE ˙ US8835561023

SecurityTMO / Thermo Fisher Scientific Inc.
InstitutionSegment Wealth Management, LLC
Latest Disclosed Ownership1,903 shares
Latest Disclosed Value $ 935,382
Segment Wealth Management, LLC reports 19.84% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On April 20, 2026 - Segment Wealth Management, LLC filed a 13F-HR form disclosing ownership of 1,903 shares of Thermo Fisher Scientific Inc. (US:TMO) valued at $935,382 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 1,588 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 19.84% during the quarter. The current value of the position is $901,927 USD.

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)
2026-04-20 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,903 315 19.84 935 1.63 0.0549
2026-01-29 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,588 135 9.29 920 30.68 0.0534
2025-10-20 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,453 -106 -6.80 705 11.39 0.0422
2025-07-21 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,559 -141 -8.29 632 -25.21 0.0401
2025-04-22 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,700 -129 -7.05 846 -11.15 0.0572
2025-01-17 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,829 -4,100 -69.15 952 -74.07 0.0649
2024-10-22 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 5,929 116 2.00 3,668 14.09 0.2520
2024-07-23 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 5,813 471 8.82 3,215 3.54 0.2372
2024-04-24 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 5,342 964 22.02 3,105 33.62 0.2359
2024-01-26 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,378 -406 -8.49 2,324 -4.05 0.2052
2023-10-25 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,784 583 13.88 2,422 10.50 0.2462
2023-08-22 2023-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 4,201 -78 -1.82 2,192 -11.15 0.2254
2023-07-21 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,201 -78 2,192 0.2276
2023-04-20 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,279 -22 -0.51 2,466 4.14 0.2790
2023-01-13 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,301 -92 -2.09 2,369 6.28 0.2742
2022-10-24 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,393 129 3.03 2,228 -3.84 0.2782
2022-07-20 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,264 -422 -9.01 2,317 -16.29 0.2941
2022-04-25 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,686 68 1.47 2,768 -10.16 0.2852
2022-01-24 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,618 332 7.75 3,081 25.81 0.3232
2021-10-19 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,286 2 0.05 2,449 13.33 0.2907
2021-07-20 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,284 -1 -0.02 2,161 10.48 0.2564
2021-05-10 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,285 223 5.49 1,956 3.38 0.2594
2021-01-27 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,062 1,603 65.19 1,892 74.22 0.2731
2020-10-27 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,459 859 53.69 1,086 87.24 0.1764
2020-07-15 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,600 -100 -5.88 580 20.33 0.1072
2020-04-24 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,700 610 55.96 482 36.16 0.1074
2020-01-23 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,090 18 1.68 354 13.46 0.0598
2019-10-22 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,072 0 0.00 312 -0.95 0.0610
2019-07-29 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,072 0 0.00 315 7.51 0.0641
2019-04-30 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,072 -113 -9.54 293 10.57 0.0621
2019-01-31 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,185 -118 -9.06 265 -16.67 0.0669
2018-11-07 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,303 1,303 318 0.0693
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.