賽默飛世爾科技公司
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionWestern Wealth Management, LLC
Latest Disclosed Ownership5,918 shares
Latest Disclosed Value $ 2,908,987
Western Wealth Management, LLC reports 31.69% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 19, 2026 - Western Wealth Management, LLC filed a 13F-HR form disclosing ownership of 5,918 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $2,908,987 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 4,494 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 31.69% 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)
2026-05-19 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 5,918 1,424 31.69 2,909 11.67 0.0676
2026-02-05 2025-12-31 13F THERMO FISHER Common Stock 883556102 4,494 1,104 32.57 2,604 58.39 0.1200
2025-11-06 2025-09-30 13F THERMO FISHER Common Stock 883556102 3,390 698 25.93 1,644 50.69 0.0867
2025-08-11 2025-06-30 13F THERMO FISHER Common Stock 883556102 2,692 -234 -8.00 1,092 -25.02 0.0648
2025-04-23 2025-03-31 13F THERMO FISHER Common Stock 883556102 2,926 173 6.28 1,456 1.68 0.0963
2025-04-16 2024-12-31 13F/A-1 THERMO FISHER Common Stock 883556102 2,753 -1,890 -40.71 1,432 -50.17 0.0933
2025-02-18 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 829 -3,814 431 0.1294
2024-11-12 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,643 693 17.54 2,873 31.50 0.1638
2024-07-19 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,950 62 1.59 2,184 -3.32 0.1619
2024-05-03 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,888 -953 -19.69 2,259 -12.07 0.1756
2024-01-31 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,841 -169 -3.37 2,570 1.34 0.1852
2023-11-08 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 5,010 123 2.52 2,536 -0.59 0.2143
2023-08-30 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,887 -92 -1.85 2,550 -11.12 0.2175
2023-08-30 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,979 26 0.52 2,870 5.21 0.2671
2023-02-03 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,953 -3,005 -37.76 2,728 -32.82 0.2788
2022-11-07 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,958 2,473 45.09 4,059 35.93 0.2324
2022-07-18 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 5,485 214 4.06 2,986 -4.08 0.1714
2022-05-10 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 5,271 2,829 115.85 3,113 91.92 0.1511
2022-02-14 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,442 -31 -1.25 1,622 29.97 0.1601
2021-08-09 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,473 400 19.30 1,248 31.92 0.1283
2021-05-14 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,073 130 6.69 946 4.53 0.1272
2021-02-10 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,943 437 29.02 905 36.09 0.1328
2020-10-27 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,506 1,506 665 0.1086
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.