Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionArjuna Capital
Latest Disclosed Ownership6,210 shares
Latest Disclosed Value $ 3,052,402
Arjuna Capital reports 5.67% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 6, 2026 - Arjuna Capital filed a 13F-HR form disclosing ownership of 6,210 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $3,052,402 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 6,583 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -5.67% 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)
2026-05-06 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,210 -373 -5.67 3,052 -19.98 0.7762
2026-02-05 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,583 2,582 64.53 3,815 96.60 0.9345
2025-11-04 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,001 -4,188 -51.14 1,941 -41.57 0.4824
2025-08-13 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,189 -2,164 -20.90 3,320 -35.55 0.8752
2025-05-09 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 10,353 -6,531 -38.68 5,152 -41.35 1.4259
2025-02-07 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 16,884 392 2.38 8,784 -13.90 2.3373
2024-11-05 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 16,492 -125 -0.75 10,201 11.01 2.6421
2024-07-29 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 16,617 2,457 17.35 9,189 11.67 2.4724
2024-05-13 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,160 592 4.36 8,230 14.28 2.3334
2024-02-08 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,568 732 5.70 7,202 10.84 2.2541
2023-11-09 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,836 485 3.93 6,497 0.82 2.3273
2023-08-09 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,351 490 4.13 6,444 -5.73 2.2830
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,861 -478 -3.87 6,836 0.62 2.6819
2023-02-06 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 12,339 294 2.44 6,795 11.21 3.1331
2022-11-01 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,045 39 0.32 6,109 -6.35 3.0034
2022-07-22 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,006 242 2.06 6,523 -6.12 3.1584
2022-05-12 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,764 379 3.33 6,948 -8.54 2.8960
2022-02-11 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,385 565 5.22 7,597 22.89 2.7816
2021-11-08 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 10,820 470 4.54 6,182 18.41 2.5122
2021-08-11 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 10,350 740 7.70 5,221 19.04 2.2567
2021-05-11 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 9,610 574 6.35 4,386 4.21 2.1567
2021-02-09 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 9,036 317 3.64 4,209 9.32 2.3297
2020-11-05 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,719 1,746 25.04 3,850 52.35 2.3893
2020-08-13 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,973 85 1.23 2,527 29.39 1.7434
2020-05-11 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,888 227 3.41 1,953 -9.75 1.6294
2020-01-30 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,661 168 2.59 2,164 14.44 1.5666
2019-11-06 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,493 144 2.27 1,891 1.39 1.6125
2019-08-21 2019-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 6,349 485 8.27 1,865 16.20 1.3408
2019-08-08 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,172 308 1,813
2019-05-14 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 5,864 3,106 112.62 1,605 160.13 1.2410
2019-01-31 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,758 -1 -0.04 617 -8.32 0.5619
2018-11-14 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,759 2,759 673 0.5063
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.