Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionPapp L Roy & Associates
Latest Disclosed Ownership50,802 shares
Latest Disclosed Value $ 24,970,467
Papp L Roy & Associates reports 1.39% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On April 14, 2026 - Papp L Roy & Associates filed a 13F-HR form disclosing ownership of 50,802 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $24,970,467 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 51,516 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -1.39% 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)
2026-04-14 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 50,802 -714 -1.39 24,970 -16.35 2.8787
2026-01-28 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 51,516 -55 -0.11 29,851 19.34 3.3002
2025-10-09 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 51,571 1,421 2.83 25,013 23.02 2.8117
2025-07-24 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 50,150 1,633 3.37 20,334 -15.77 2.4154
2025-04-10 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 48,517 -399 -0.82 24,142 -5.13 2.9615
2025-01-29 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 48,916 183 0.38 25,447 -15.58 2.9708
2024-10-24 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 48,733 -582 -1.18 30,144 10.54 3.6488
2024-07-24 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 49,315 -331 -0.67 27,271 -5.49 3.3048
2024-04-15 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 49,646 -632 -1.26 28,855 8.12 3.4349
2024-01-19 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 50,278 313 0.63 26,687 5.52 3.3125
2023-10-19 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 49,965 548 1.11 25,291 -1.91 3.4269
2023-07-17 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 49,417 156 0.32 25,783 -9.19 3.3131
2023-05-05 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 49,261 -1,258 -2.49 28,392 2.06 3.8356
2023-01-17 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 50,519 -634 -1.24 27,820 7.23 3.9043
2022-10-21 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 51,153 112 0.22 25,945 -6.44 3.9234
2022-08-02 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 51,041 -23 -0.05 27,730 -8.06 4.0206
2022-05-06 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 51,064 -136 -0.27 30,161 -11.71 3.7653
2022-02-11 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 51,200 -516 -1.00 34,163 15.62 3.9107
2021-11-09 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 51,716 -1,253 -2.37 29,547 10.58 3.7549
2021-08-09 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 52,969 1,662 3.24 26,721 14.12 3.3739
2021-05-06 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 51,307 -5,850 -10.23 23,415 -12.05 3.3606
2021-02-10 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 57,157 -2,717 -4.54 26,622 0.71 3.0658
2020-11-13 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 59,874 -2,631 -4.21 26,435 16.72 3.3960
2020-08-11 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 62,505 -1,307 -2.05 22,648 25.15 3.2099
2020-05-05 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 63,812 184 0.29 18,097 -12.45 3.3041
2020-02-14 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 63,628 -459 -0.72 20,671 10.74 2.9771
2019-11-04 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 64,087 994 1.58 18,666 0.74 2.9257
2019-08-14 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 63,093 692 1.11 18,529 8.48 2.9073
2019-05-09 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 62,401 626 1.01 17,080 23.54 3.0731
2019-02-13 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 61,775 -324 -0.52 13,825 -8.79 2.8901
2018-11-13 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 62,099 -562 -0.90 15,157 16.77 2.7043
2018-08-09 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 62,661 -1,265 -1.98 12,980 -1.65 2.4530
2018-05-14 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 63,926 3,115 5.12 13,198 14.30 2.5244
2018-02-06 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 60,811 420 0.70 11,547 1.06 2.2830
2017-11-06 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 60,391 1,741 2.97 11,426 11.66 2.4703
2017-07-28 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 58,650 5,933 11.25 10,233 26.38 2.2110
2017-05-11 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 52,717 8,361 18.85 8,097 29.37 1.8452
2017-02-08 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 44,356 2,176 5.16 6,259 -6.71 1.4337
2016-10-21 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 42,180 -858 -1.99 6,709 5.50 1.5563
2016-07-27 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 43,038 1,394 3.35 6,359 7.85 1.5014
2016-05-09 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 41,644 4,005 10.64 5,896 10.43 1.3979
2016-02-02 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 37,639 9,235 32.51 5,339 53.73 1.3075
2015-11-03 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 28,404 15,972 128.47 3,473 115.31 0.8588
2015-08-06 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,432 6,615 113.72 1,613 106.53 0.3668
2015-05-06 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 5,817 5,817 781 0.1712
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.