賽默飛世爾科技公司
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionProShare Advisors LLC
Latest Disclosed Ownership57,741 shares
Latest Disclosed Value $ 28,381,436
ProShare Advisors LLC reports 19.02% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On April 24, 2026 - ProShare Advisors LLC filed a 13F-HR form disclosing ownership of 57,741 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $28,381,436 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 71,300 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -19.02% 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)
2026-04-24 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 57,741 -13,559 -19.02 28,381 -31.30 0.0420
2026-02-06 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 71,300 5,554 8.45 41,315 29.56 0.0729
2025-11-06 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 65,746 -1,853 -2.74 31,888 16.35 0.0667
2025-08-07 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 67,599 6,614 10.85 27,409 -9.68 0.0547
2025-05-08 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 60,985 2,765 4.75 30,346 0.19 0.0685
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 58,220 1,696 3.00 30,288 -13.38 0.0692
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 56,524 -3,083 -5.17 34,964 6.07 0.0857
2024-08-13 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 59,607 6,783 12.84 32,963 7.36 0.0882
2024-05-08 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 52,824 -1,216 -2.25 30,702 7.04 0.0816
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 54,040 -5,691 -9.53 28,684 -5.13 0.0877
2023-11-13 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 59,731 -3,322 -5.27 30,234 -8.09 0.0943
2023-08-10 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 63,053 273 0.43 32,898 -9.08 0.0954
2023-05-26 2023-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 62,780 7,697 13.97 36,185 19.29 0.1106
2023-05-12 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 62,780 7,697 36,185 0.1151
2023-02-02 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 55,083 -235 -0.42 30,334 8.12 0.1065
2022-11-07 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 55,318 -6,069 -9.89 28,056 -15.87 0.1077
2022-08-01 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 61,387 -24,027 -28.13 33,350 -33.89 0.1106
2022-05-10 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 85,414 -3,486 -3.92 50,449 -14.95 0.1084
2022-02-08 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 88,900 19,101 27.37 59,318 48.75 0.1164
2021-11-12 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 69,799 -1,605 -2.25 39,878 10.71 0.1120
2021-08-13 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 71,404 13,124 22.52 36,021 35.43 0.1053
2021-05-14 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 58,280 2,434 4.36 26,598 2.25 0.0836
2021-02-09 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 55,846 5,665 11.29 26,012 17.40 0.0968
2020-11-13 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 50,181 1,569 3.23 22,156 25.79 0.1024
2020-08-03 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 48,612 5,398 12.49 17,614 43.73 0.0941
2020-05-15 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 43,214 -28,762 -39.96 12,255 -47.59 0.0881
2020-02-12 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 71,976 14,545 25.33 23,383 39.78 0.1083
2019-11-12 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 57,431 3,481 6.45 16,728 5.58 0.0936
2019-08-13 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 53,950 -10,131 -15.81 15,844 -9.67 0.0947
2019-05-15 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 64,081 2,898 4.74 17,540 28.10 0.1050
2019-02-14 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 61,183 4,859 8.63 13,692 -0.41 0.0958
2018-11-14 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 56,324 -5,054 -8.23 13,748 8.13 0.0933
2018-08-13 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 61,378 -4,380 -6.66 12,714 -6.35 0.0852
2018-05-14 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 65,758 1,745 2.73 13,576 11.69 0.0884
2018-02-14 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 64,013 18,722 41.34 12,155 41.85 0.0843
2017-11-13 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 45,291 7,265 19.11 8,569 29.17 0.0788
2017-08-11 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 38,026 -1,138 -2.91 6,634 10.27 0.0661
2017-05-12 2017-03-31 13F/A-2 THERMO FISHER SCIENTIFIC COM 883556102 39,164 28 0.07 6,016 8.95 0.0629
2017-05-08 2017-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 39,164 0 6,016 0.0629
2017-04-25 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 39,164 6,016
2017-02-13 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 39,136 7,585 24.04 5,522 10.02 0.0611
2016-11-10 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 31,551 -16,027 -33.69 5,019 -28.61 0.0701
2016-08-12 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 47,578 581 1.24 7,030 5.65 0.0906
2016-05-06 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 46,997 -23,155 -33.01 6,654 -33.13 0.0916
2016-02-05 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 70,152 3,671 5.52 9,951 22.41 0.1205
2015-11-06 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 66,481 2,921 4.60 8,129 -1.44 0.1142
2015-08-11 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 63,560 -14,734 -18.82 8,248 -21.58 0.1141
2015-05-08 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 78,294 78,294 0.00 10,518 0.1239
2015-01-30 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -68,014 -100.00 0 -100.00
2014-11-06 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 68,014 -6,405 -8.61 8,277 -5.74 0.1097
2014-08-08 2014-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 74,419 -5,522 -6.91 8,781 -8.65 0.1138
2014-05-07 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 79,941 9,693 13.80 9,612 22.88 0.1202
2014-02-04 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 70,248 33,439 90.84 7,822 130.60 0.1166
2013-11-07 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 36,809 -21,793 -37.19 3,392 -31.60 0.0805
2013-07-25 2013-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 58,602 58,602 4,959 0.0973
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.