Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionAnnex Advisory Services, LLC
Latest Disclosed Ownership21,900 shares
Latest Disclosed Value $ 10,764,690
Annex Advisory Services, LLC reports 3.85% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On April 16, 2026 - Annex Advisory Services, LLC filed a 13F-HR form disclosing ownership of 21,900 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $10,764,690 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 21,089 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 3.85% 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)
2026-04-16 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 21,900 811 3.85 10,765 -11.91 0.2017
2026-01-26 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 21,089 3,469 19.69 12,220 43.01 0.2334
2025-10-17 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 17,620 8,524 93.71 8,546 131.70 0.1819
2025-07-11 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 9,096 309 3.52 3,688 -15.65 0.0888
2025-04-11 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,787 -445 -4.82 4,372 -8.95 0.1240
2025-01-16 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 9,232 660 7.70 4,803 -9.43 0.1447
2024-10-10 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,572 515 6.39 5,302 19.01 0.1696
2024-07-12 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,057 138 1.74 4,455 -3.19 0.1569
2024-04-12 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,919 -120 -1.49 4,603 7.85 0.1635
2024-02-13 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,039 861 11.99 4,267 17.45 0.1781
2023-11-01 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,178 396 5.84 3,634 2.69 0.2198
2023-07-24 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,782 -649 -8.73 3,539 -17.39 0.1964
2023-04-27 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,431 -666 -8.23 4,283 -3.93 0.2295
2023-01-30 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,097 -6,638 -45.05 4,459 -40.35 0.2512
2022-10-24 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 14,735 -502 -3.29 7,474 -9.71 0.5038
2022-07-27 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 15,237 397 2.68 8,278 -5.56 0.5978
2022-04-13 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,840 820 5.85 8,765 -6.31 0.6412
2022-01-31 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,020 196 1.42 9,355 18.45 0.6412
2021-10-18 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,824 93 0.68 7,898 13.36 0.6461
2021-07-29 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,731 2,819 25.83 6,967 39.87 0.5648
2021-04-22 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 10,912 -552 -4.82 4,981 -6.72 0.4795
2021-01-28 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,464 11,464 5,340 0.5229
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.