Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionOpal Wealth Advisors, LLC
Latest Disclosed Ownership1,018 shares
Latest Disclosed Value $ 500,378
Opal Wealth Advisors, LLC reports 5.48% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On April 14, 2026 - Opal Wealth Advisors, LLC filed a 13F-HR form disclosing ownership of 1,018 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $500,378 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 1,077 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -5.48% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-14 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,018 -59 -5.48 500 -19.87 0.1131
2026-01-26 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,077 -106 -8.96 624 8.90 0.1627
2025-10-24 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,183 -8 -0.67 574 18.88 0.1597
2025-07-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,191 -195 -14.07 483 -30.04 0.1339
2025-04-16 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,386 200 16.86 690 11.85 0.2126
2025-01-29 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,186 -250 -17.41 617 -30.63 0.1852
2024-10-15 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,436 198 15.99 888 29.82 0.2782
2024-07-12 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,238 128 11.53 685 6.05 0.2198
2024-04-11 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,110 306 38.06 645 51.41 0.2188
2024-01-22 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 804 43 5.65 427 10.65 0.1681
2023-10-18 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 761 20 2.70 385 -0.26 0.2254
2023-07-27 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 741 -5 -0.67 387 -10.02 0.1929
2023-04-19 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 746 -8 -1.06 430 3.37 0.2511
2023-02-03 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 754 135 21.81 415 32.17 0.2290
2022-10-17 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 619 -24 -3.73 314 -10.03 0.2292
2022-08-10 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 643 17 2.72 349 -5.68 0.2308
2022-05-09 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 626 -198 -24.03 370 -32.73 0.3220
2022-01-31 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 824 54 7.01 550 25.00 0.3479
2021-11-05 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 770 -5 -0.65 440 12.53 0.4229
2021-08-02 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 775 66 9.31 391 20.68 0.3639
2021-04-29 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 709 -223 -23.93 324 -25.35 0.3522
2021-02-11 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 932 932 434 0.5441
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.