Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionAtria Investments Llc
Latest Disclosed Ownership28,478 shares
Latest Disclosed Value $ 13,997,833
Atria Investments Llc reports 12.16% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 5, 2026 - Atria Investments Llc filed a 13F-HR form disclosing ownership of 28,478 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $13,997,833 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 32,421 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -12.16% 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)
2026-05-05 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,478 -3,943 -12.16 13,998 -25.49 0.1566
2026-02-05 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 32,421 -825 -2.48 18,787 16.50 0.2135
2025-11-06 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 33,246 -15,333 -31.56 16,125 -18.13 0.1843
2025-08-04 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 48,579 5,041 11.58 19,697 -9.08 0.2326
2025-05-06 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 43,538 -90 -0.21 21,664 -4.55 0.2777
2025-02-06 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 43,628 -5,610 -11.39 22,697 -25.48 0.2825
2024-11-01 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 49,238 2,433 5.20 30,457 17.67 0.3783
2024-08-13 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 46,805 187 0.40 25,883 -4.46 0.3351
2024-05-21 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 46,618 5,200 12.55 27,091 23.24 0.3729
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 41,418 148 0.36 21,982 5.24 0.3402
2023-11-07 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 41,270 6,576 18.95 20,889 15.41 0.3720
2023-08-04 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 34,694 382 1.11 18,100 -8.47 0.3268
2023-05-10 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 34,312 936 2.80 19,773 7.60 0.3743
2023-01-31 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 33,376 5,481 19.65 18,378 29.89 0.3767
2022-11-01 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 27,895 1,012 3.76 14,148 -3.13 0.3124
2022-08-11 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 26,883 -2,067 -7.14 14,605 -14.59 0.3063
2022-05-02 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,950 -653 -2.21 17,100 -13.43 0.2994
2022-02-04 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 29,603 -322 -1.08 19,752 15.53 0.3520
2021-11-16 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 29,925 1,368 4.79 17,097 18.68 0.3088
2021-08-10 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 28,557 -9,151 -24.27 14,406 -16.29 0.2780
2021-05-11 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 37,708 3,032 8.74 17,209 6.54 0.3809
2021-02-12 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 34,676 8,492 32.43 16,152 39.71 0.3898
2020-11-05 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 26,184 -1,133 -4.15 11,561 16.80 0.3512
2020-09-22 2020-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 27,317 27,317 9,898 0.3391
2020-05-15 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -19,339 -100.00 0 -100.00
2020-02-11 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 19,339 5,349 38.23 6,283 54.18 0.1702
2019-11-14 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,990 4,293 44.27 4,075 53.31 0.1452
2019-08-26 2019-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 9,697 1,678 20.93 2,658 21.09 0.0991
2019-05-15 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,019 -235 -2.85 2,195 18.84 0.0929
2019-02-12 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,254 -490 -5.60 1,847 -13.45 0.0818
2018-10-09 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,744 29 0.33 2,134 18.23 0.0843
2018-07-13 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,715 79 0.91 1,805 1.23 0.0793
2018-04-30 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,636 382 4.63 1,783 13.78 0.0860
2018-01-12 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,254 364 4.61 1,567 4.96 0.0779
2017-10-12 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,890 535 7.27 1,493 16.37 0.0813
2017-07-10 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,355 253 3.56 1,283 17.60 0.0785
2017-04-14 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,102 2,016 39.64 1,091 51.95 0.0711
2017-01-13 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 5,086 586 13.02 718 0.28 0.0548
2016-10-12 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,500 938 26.33 716 32.84 0.0658
2016-07-12 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,562 671 23.21 539 31.78 0.0581
2016-04-19 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,891 -299 -9.37 409 -4.44 0.0465
2016-01-14 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,190 593 22.83 428 34.59 0.0470
2015-11-16 2015-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 2,597 165 6.78 318 0.63 0.0440
2015-11-12 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 318 2,597
2015-08-03 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,432 -574 -19.10 316 -21.78 0.0371
2015-04-13 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,006 -43 -1.41 404 5.76 0.0457
2015-01-12 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,049 -11 -0.36 382 2.69 0.0406
2014-11-12 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,060 190 6.62 372 9.73 0.0380
2014-07-21 2014-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,870 784 37.58 339 35.06 0.0338
2014-05-12 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,086 -86 -3.96 251 3.72 0.0256
2014-01-09 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,172 -27 -1.23 242 19.21 0.0241
2013-10-28 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,199 2,199 203 0.0211
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.