Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionWeatherly Asset Management L. P.
Latest Disclosed Ownership631 shares
Latest Disclosed Value $ 310,302
Weatherly Asset Management L. P. reports 0.80% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On April 15, 2026 - Weatherly Asset Management L. P. filed a 13F-HR form disclosing ownership of 631 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $310,302 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 626 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 0.80% 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)
2026-04-15 2026-03-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 631 5 0.80 310 -14.60 0.0251
2026-01-16 2025-12-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 626 14 2.29 363 22.64 0.0280
2025-10-16 2025-09-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 612 0 0.00 297 19.35 0.0245
2025-07-11 2025-06-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 612 6 0.99 248 -17.61 0.0212
2025-05-01 2025-03-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 606 0 0.00 302 -4.44 0.0270
2025-01-29 2024-12-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 606 15 2.54 315 -13.70 0.0280
2024-10-29 2024-09-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 591 24 4.23 366 16.24 0.0320
2024-07-31 2024-06-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 567 0 0.00 314 -4.56 0.0288
2024-04-19 2024-03-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 567 0 0.00 330 9.30 0.0319
2024-02-01 2023-12-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 567 -75 -11.68 301 -7.38 0.0325
2023-10-10 2023-09-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 642 -16 -2.43 325 -5.25 0.0389
2023-07-21 2023-06-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 658 125 23.45 344 11.73 0.0401
2023-04-13 2023-03-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 533 0 0.00 307 4.78 0.0399
2023-01-11 2022-12-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 533 0 0.00 294 8.52 0.0401
2022-10-17 2022-09-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 533 -14 -2.56 270 -9.09 0.0388
2022-07-18 2022-06-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 547 -82 -13.04 297 -19.95 0.0414
2022-05-06 2022-03-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 629 -100 -13.72 371 -23.66 0.0434
2022-01-28 2021-12-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 729 0 0.00 486 16.83 0.0539
2021-11-05 2021-09-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 729 0 0.00 416 13.04 0.0506
2021-08-12 2021-06-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 729 0 0.00 368 10.51 0.0464
2021-05-05 2021-03-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 729 0 0.00 333 -1.77 0.0462
2021-02-02 2020-12-31 13F THERMO FISHER SCIENTIFIC COMMON 883556102 729 0 0.00 339 5.28 0.0487
2020-10-30 2020-09-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 729 89 13.91 322 38.79 0.0520
2020-07-29 2020-06-30 13F THERMO FISHER SCIENTIFIC COMMON 883556102 640 640 232 0.0410
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.