Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionAlta Capital Management Llc/
Latest Disclosed Ownership65,914 shares
Latest Disclosed Value $ 32,398,738
Alta Capital Management Llc/ reports 6.86% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 8, 2026 - Alta Capital Management Llc/ filed a 13F-HR form disclosing ownership of 65,914 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $32,398,738 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 70,766 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -6.86% 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)
2026-05-08 2026-03-31 13F Thermo Fisher Sci COM 883556102 65,914 -4,852 -6.86 32,399 -20.99 2.5089
2026-02-06 2025-12-31 13F Thermo Fisher Sci COM 883556102 70,766 -16,022 -18.46 41,006 -2.59 2.7306
2025-11-04 2025-09-30 13F Thermo Fisher Sci COM 883556102 86,788 -2,545 -2.85 42,094 16.21 2.3431
2025-07-28 2025-06-30 13F Thermo Fisher Sci COM 883556102 89,333 4,208 4.94 36,221 -14.49 2.0612
2025-04-21 2025-03-31 13F Thermo Fisher Sci COM 883556102 85,125 -2,028 -2.33 42,358 -6.57 2.7486
2025-02-06 2024-12-31 13F Thermo Fisher Sci COM 883556102 87,153 -898 -1.02 45,340 -16.76 2.7014
2024-11-12 2024-09-30 13F Thermo Fisher Sci COM 883556102 88,051 2,204 2.57 54,466 14.73 3.2389
2024-07-25 2024-06-30 13F Thermo Fisher Sci COM 883556102 85,847 -3,702 -4.13 47,474 -8.79 2.9852
2024-04-25 2024-03-31 13F Thermo Fisher Sci COM 883556102 89,549 104 0.12 52,047 9.63 3.2113
2024-01-22 2023-12-31 13F Thermo Fisher Sci COM 883556102 89,445 1,635 1.86 47,477 6.81 3.0654
2023-10-18 2023-09-30 13F Thermo Fisher Sci COM 883556102 87,810 -476 -0.54 44,447 -3.51 3.2001
2023-07-20 2023-06-30 13F Thermo Fisher Sci COM 883556102 88,286 4,307 5.13 46,064 -4.83 3.1619
2023-04-24 2023-03-31 13F Thermo Fisher Sci COM 883556102 83,979 -4,845 -5.45 48,404 -1.04 3.5599
2023-01-26 2022-12-31 13F Thermo Fisher Sci COM 883556102 88,824 -5,201 -5.53 48,915 2.57 3.7434
2022-10-25 2022-09-30 13F Thermo Fisher Sci COM 883556102 94,025 -599 -0.63 47,688 -7.23 3.7316
2022-08-02 2022-06-30 13F Thermo Fisher Sci COM 883556102 94,624 -14,898 -13.60 51,407 -20.53 3.7732
2022-04-19 2022-03-31 13F Thermo Fisher Scientific COM 883556102 109,522 -555 -0.50 64,689 -11.93 3.7842
2022-02-02 2021-12-31 13F Thermo Fisher Scientific COM 883556102 110,077 -2,098 -1.87 73,448 14.60 3.8028
2021-11-03 2021-09-30 13F Thermo Fisher Scientific COM 883556102 112,175 -110,357 -49.59 64,089 -42.91 3.6152
2021-07-27 2021-06-30 13F Thermo Fisher Scientific COM 883556102 222,532 221 0.10 112,260 10.65 3.2310
2021-05-06 2021-03-31 13F Thermo Fisher Scientific COM 883556102 222,311 98,232 79.17 101,458 75.55 3.1022
2021-02-03 2020-12-31 13F/A-1 Thermo Fisher Scientific COM 883556102 124,079 -127,492 -50.68 57,793 -47.97 3.2617
2021-01-29 2020-12-31 13F Thermo Fisher Scientific COM 883556102 124,079 -127,492 57,793 3,261,700.7936
2020-10-30 2020-09-30 13F Thermo Fisher Scientific COM 883556102 251,571 -62,637 -19.93 111,073 -2.44 3.5395
2020-08-06 2020-06-30 13F Thermo Fisher Scientific COM 883556102 314,208 -15,629 -4.74 113,850 21.71 3.9859
2020-05-06 2020-03-31 13F Thermo Fisher Scientific COM 883556102 329,837 161,119 95.50 93,542 70.66 4.0403
2020-01-30 2019-12-31 13F Thermo Fisher Scientific COM 883556102 168,718 -3,307 -1.92 54,811 9.39 3.5745
2019-10-22 2019-09-30 13F Thermo Fisher Scientific COM 883556102 172,025 -42,051 -19.64 50,105 -20.30 3.4658
2019-07-26 2019-06-30 13F Thermo Fisher Scientific COM 883556102 214,076 -264 -0.12 62,869 7.16 3.5103
2019-04-23 2019-03-31 13F Thermo Fisher Scientific COM 883556102 214,340 58,968 37.95 58,669 68.73 3.4530
2019-01-09 2018-12-31 13F Thermo Fisher Scientific COM 883556102 155,372 -122 -0.08 34,770 -8.39 2.2542
2018-10-17 2018-09-30 13F Thermo Fisher Scientific COM 883556102 155,494 -43,655 -21.92 37,953 -7.99 2.1054
2018-07-23 2018-06-30 13F Thermo Fisher Scientific COM 883556102 199,149 -3,756 -1.85 41,251 -1.53 2.5389
2018-04-06 2018-03-31 13F Thermo Fisher Scientific COM 883556102 202,905 -5,599 -2.69 41,891 5.81 2.6039
2018-01-18 2017-12-31 13F Thermo Fisher Scientific COM 883556102 208,504 -5,864 -2.74 39,590 -2.39 2.4927
2017-10-19 2017-09-30 13F Thermo Fisher Scientific COM 883556102 214,368 -9,228 -4.13 40,558 3.97 2.6185
2017-07-10 2017-06-30 13F Thermo Fisher Scientific COM 883556102 223,596 -771 -0.34 39,010 13.20 2.6368
2017-04-19 2017-03-31 13F Thermo Fisher Scientific COM 883556102 224,367 359 0.16 34,462 9.03 2.3074
2017-01-19 2016-12-31 13F Thermo Fisher Scientific COM 883556102 224,008 -58,343 -20.66 31,607 -29.62 2.2673
2016-10-13 2016-09-30 13F Thermo Fisher Scientific COM 883556102 282,351 -3,262 -1.14 44,910 6.42 2.7959
2016-07-20 2016-06-30 13F Thermo Fisher Scientific COM 883556102 285,613 941 0.33 42,202 4.70 2.6051
2016-04-21 2016-03-31 13F Thermo Fisher Scientific COM 883556102 284,672 7,505 2.71 40,306 2.52 2.4859
2016-02-08 2015-12-31 13F Thermo Fisher Scientific COM 883556102 277,167 5,490 2.02 39,316 18.35 3.1699
2015-10-19 2015-09-30 13F Thermo Fisher Scientific COM 883556102 271,677 4,098 1.53 33,220 -4.32 2.8226
2015-07-29 2015-06-30 13F Thermo Fisher Scientific COM 883556102 267,579 19,621 7.91 34,721 4.24 2.8486
2015-04-24 2015-03-31 13F Thermo Fisher Scientific COM 883556102 247,958 -18,713 -7.02 33,310 -0.30 2.8346
2015-01-16 2014-12-31 13F Thermo Fisher Scientific COM 883556102 266,671 34,173 14.70 33,411 18.08 2.7899
2014-10-23 2014-09-30 13F Thermo Fisher Scientific COM 883556102 232,498 -2,301 -0.98 28,295 2.13 2.6228
2014-07-08 2014-06-30 13F Thermo Fisher Scientific COM 883556102 234,799 4,139 1.79 27,706 -0.10 2.5525
2014-04-16 2014-03-31 13F/A-1 Thermo Fisher Scientific COM 883556102 230,660 3,560 1.57 27,734 9.68 2.6853
2014-04-16 2014-03-31 13F Thermo Fisher Scientific COM 883556102 227,100 25,287
2014-01-22 2013-12-31 13F Thermo Fisher Scientific COM 883556102 227,100 5,007 2.25 25,287 23.56 2.5952
2013-10-29 2013-09-30 13F Thermo Fisher Scientific COM 883556102 222,093 3,323 1.52 20,465 10.54 2.4603
2013-08-01 2013-06-30 13F Thermo Fisher Scientific COM 883556102 218,770 218,770 18,514 2.5008
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.