Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionMAI Capital Management
Latest Disclosed Ownership61,039 shares
Latest Disclosed Value $ 30,002,360
MAI Capital Management reports 3.10% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - MAI Capital Management filed a 13F-HR form disclosing ownership of 61,039 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $30,002,360 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 59,202 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 3.10% 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)
2026-05-15 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 61,039 1,837 3.10 30,002 -12.54 0.1693
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 59,202 8,177 16.03 34,305 38.61 0.1973
2025-11-10 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 51,025 7,868 18.23 24,748 41.43 0.1541
2025-08-12 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 43,157 3,580 9.05 17,498 -11.15 0.1209
2025-05-15 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 39,577 17,071 75.85 19,694 68.20 0.1484
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 22,506 8,222 57.56 11,709 32.52 0.0867
2024-11-07 2024-09-30 13F THERMO FISHER CS 883556102 14,284 -769 -5.11 8,835 6.14 0.0841
2024-08-12 2024-06-30 13F THERMO FISHER CS 883556102 15,053 86 0.57 8,324 -4.31 0.0815
2024-05-08 2024-03-31 13F THERMO FISHER CS 883556102 14,967 8,421 128.64 8,699 150.40 0.0901
2024-02-09 2023-12-31 13F THERMO FISHER CS 883556102 6,546 174 2.73 3,475 7.72 0.0457
2023-11-14 2023-09-30 13F THERMO FISHER CS 883556102 6,372 -537 -7.77 3,225 -10.52 0.0480
2023-08-02 2023-06-30 13F THERMO FISHER CS 883556102 6,909 -339 -4.68 3,605 -13.72 0.0530
2023-05-10 2023-03-31 13F THERMO FISHER CS 883556102 7,248 387 5.64 4,177 10.56 0.0658
2023-02-09 2022-12-31 13F THERMO FISHER CS 883556102 6,861 615 9.85 3,778 19.26 0.0635
2022-11-15 2022-09-30 13F THERMO FISHER CS 883556102 6,246 644 11.50 3,168 4.11 0.0595
2022-07-19 2022-06-30 13F THERMO FISHER CS 883556102 5,602 129 2.36 3,043 -5.85 0.0581
2022-05-10 2022-03-31 13F THERMO FISHER CS 883556102 5,473 874 19.00 3,232 5.31 0.0543
2022-02-11 2021-12-31 13F Thermo Fisher Scientific CS 883556102 4,599 785 20.58 3,069 40.84 0.0494
2021-11-12 2021-09-30 13F Thermo Fisher Scientific CS 883556102 3,814 545 16.67 2,179 32.14 0.0420
2021-07-19 2021-06-30 13F Thermo Fisher Scientific CS 883556102 3,269 -31 -0.94 1,649 9.50 0.0327
2021-05-10 2021-03-31 13F Thermo Fisher Scientific CS 883556102 3,300 463 16.32 1,506 14.00 0.0337
2021-02-16 2020-12-31 13F Thermo Fisher Scientific CS 883556102 2,837 235 9.03 1,321 14.97 0.0330
2020-10-26 2020-09-30 13F Thermo Fisher Scientific CS 883556102 2,602 -28 -1.06 1,149 20.57 0.0333
2020-07-27 2020-06-30 13F Thermo Fisher Scientific CS 883556102 2,630 10 0.38 953 28.26 0.0299
2020-04-16 2020-03-31 13F Thermo Fisher Scientific CS 883556102 2,620 104 4.13 743 -9.06 0.0303
2020-02-03 2019-12-31 13F Thermo Fisher Scientific CS 883556102 2,516 230 10.06 817 22.67 0.0265
2019-10-29 2019-09-30 13F Thermo Fisher Scientific CS 883556102 2,286 18 0.79 666 0.00 0.0297
2019-08-15 2019-06-30 13F Thermo Fisher Scientific CS 883556102 2,268 -13 -0.57 666 6.73 0.0301
2019-04-29 2019-03-31 13F Thermo Fisher Scientific CS 883556102 2,281 -389 -14.57 624 4.35 0.0320
2019-01-30 2018-12-31 13F Thermo Fisher Scientific CS 883556102 2,670 -5 -0.19 598 -8.42 0.0349
2018-10-12 2018-09-30 13F Thermo Fisher Scientific CS 883556102 2,675 16 0.60 653 18.51 0.0334
2018-08-16 2018-06-30 13F Thermo Fisher Scientific CS 883556102 2,659 -239 -8.25 551 -7.86 0.0297
2018-04-17 2018-03-31 13F Thermo Fisher Scientific CS 883556102 2,898 -15 -0.51 598 8.14 0.0340
2018-01-30 2017-12-31 13F Thermo Fisher Scientific CS 883556102 2,913 5 0.17 553 0.55 0.0314
2017-10-12 2017-09-30 13F Thermo Fisher Scientific CS 883556102 2,908 139 5.02 550 13.87 0.0334
2017-08-07 2017-06-30 13F Thermo Fisher Scientific CS 883556102 2,769 -518 -15.76 483 -4.36 0.0311
2017-05-11 2017-03-31 13F Thermo Fisher Scientific CS 883556102 3,287 1,381 72.46 505 87.73 0.0340
2017-01-31 2016-12-31 13F Thermo Fisher Scientific CS 883556102 1,906 0 0.00 269 -11.22 0.0196
2016-10-18 2016-09-30 13F Thermo Fisher Scientific CS 883556102 1,906 0 0.00 303 7.45 0.0229
2016-07-14 2016-06-30 13F Thermo Fisher Scientific CS 883556102 1,906 0 0.00 282 4.44 0.0217
2016-04-08 2016-03-31 13F Thermo Fisher Scientific CS 883556102 1,906 0 0.00 270 0.00 0.0206
2016-01-27 2015-12-31 13F Thermo Fisher Scientific CS 883556102 1,906 -89 -4.46 270 10.66 0.0206
2015-10-28 2015-09-30 13F Thermo Fisher Scientific CS 883556102 1,995 -129 -6.07 244 -11.59 0.0185
2015-07-09 2015-06-30 13F Thermo Fisher Scientific CS 883556102 2,124 0 0.00 276 -3.16 0.0182
2015-04-30 2015-03-31 13F Thermo Fisher Scientific CS 883556102 2,124 0 0.00 285 7.14 0.0191
2015-01-20 2014-12-31 13F Thermo Fisher Scientific CS 883556102 2,124 98 4.84 266 7.69 0.0187
2014-10-16 2014-09-30 13F/A-1 Thermo Fisher Scientific CS 883556102 2,026 101 5.25 247 8.81 0.0238
2014-10-16 2014-09-30 13F Thermo Fisher Scientific COM 883556102 1,925 227
2014-07-28 2014-06-30 13F Thermo Fisher Scientific COM 883556102 1,925 0 0.00 227 -1.73 0.0218
2014-04-28 2014-03-31 13F Thermo Fisher Scientific COM 883556102 1,925 -214 -10.00 231 -2.94 0.0233
2014-02-06 2013-12-31 13F Thermo Fisher Scientific COM 883556102 2,139 -365 -14.58 238 12.26 0.0252
2013-08-01 2013-06-30 13F Thermo Fisher Scientific COM 883556102 2,504 2,504 212 0.0276
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.