Thermo Fisher Scientific Inc.
US ˙ NYSE ˙ US8835561023

SecurityTMO / Thermo Fisher Scientific Inc.
InstitutionPacer Advisors, Inc.
Latest Disclosed Ownership20,393 shares
Latest Disclosed Value $ 10,023,771
Pacer Advisors, Inc. reports 33.83% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 6, 2026 - Pacer Advisors, Inc. filed a 13F-HR form disclosing ownership of 20,393 shares of Thermo Fisher Scientific Inc. (US:TMO) valued at $10,023,771 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 24, 2026 disclosing 30,820 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -33.83% during the quarter. The current value of the position is $9,665,262 USD.

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)
2026-05-06 2026-03-31 13F Thermo Fisher Scientific Common Stock - Domestic 883556102 20,393 -10,427 -33.83 10,024 -43.87 0.0159
2026-02-24 2025-12-31 13F/A-1 Thermo Fisher Scientific Common Stock - Domestic 883556102 30,820 -564 -1.80 17,859 17.32 0.0456
2025-10-15 2025-09-30 13F Thermo Fisher Scientific Common Stock - Domestic 883556102 31,384 -492 -1.54 15,222 17.77 0.0383
2025-08-12 2025-06-30 13F Thermo Fisher Scientific Common Stock - Domestic 883556102 31,876 11,492 56.38 12,924 27.42 0.0321
2025-05-06 2025-03-31 13F Thermo Fisher Scientific Common Stock - Domestic 883556102 20,384 -11,175 -35.41 10,143 -38.22 0.0237
2025-01-22 2024-12-31 13F Thermo Fisher Scientific Common Stock - Domestic 883556102 31,559 2,642 9.14 16,418 -8.22 0.0354
2024-11-12 2024-09-30 13F Thermo Fisher Scientific Common Stock - Domestic 883556102 28,917 17 0.06 17,887 11.93 0.0378
2024-08-13 2024-06-30 13F Thermo Fisher Scientific Common Stock - Domestic 883556102 28,900 1,685 6.19 15,982 1.04 0.0362
2024-05-10 2024-03-31 13F Thermo Fisher Scientific Common Stock - Domestic 883556102 27,215 1,756 6.90 15,818 17.05 0.0364
2024-01-16 2023-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common Stock - Domestic 883556102 25,459 -237 -0.92 13,513 3.90 0.0382
2023-11-13 2023-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common Stock - Domestic 883556102 25,696 470 1.86 13,007 -1.18 0.0498
2023-07-12 2023-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common Stock - Domestic 883556102 25,226 927 3.81 13,162 -6.03 0.0530
2023-05-02 2023-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common Stock - Domestic 883556102 24,299 22,391 1,173.53 14,005 1,233.81 0.0598
2023-02-06 2022-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common Stock - Domestic 883556102 1,908 -479 -20.07 1,051 -13.29 0.0054
2022-10-18 2022-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common Stock - Domestic 883556102 2,387 49 2.10 1,211 -4.65 0.0084
2022-08-12 2022-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common Stock - Domestic 883556102 2,338 -18,544 -88.80 1,270 -89.70 0.0094
2022-04-05 2022-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common Stock - Domestic 883556102 20,882 -227 -1.08 12,334 -12.43 0.1011
2022-02-03 2021-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common Stock - Domestic 883556102 21,109 -1,637 -7.20 14,085 8.39 0.1445
2021-10-15 2021-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common Stock - Domestic 883556102 22,746 -28 -0.12 12,995 13.11 0.1641
2021-07-21 2021-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common Stock - Domestic 883556102 22,774 158 0.70 11,489 11.32 0.1644
2021-04-05 2021-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common Stock 883556102 22,616 -2,400 -9.59 10,321 -11.42 0.1794
2021-01-20 2020-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common Stock 883556102 25,016 -4,970 -16.57 11,652 -11.99 0.2188
2020-10-19 2020-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common Stock 883556102 29,986 -4,902 -14.05 13,239 4.73 0.2816
2020-07-29 2020-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common Stock 883556102 34,888 34,851 94,191.89 12,641 105,241.67 0.2559
2020-04-23 2020-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common Stock 883556102 37 -46,301 -99.92 12 -99.92 0.0002
2020-02-10 2019-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common Stock 883556102 46,338 2,346 5.33 15,054 17.48 0.6801
2019-10-10 2019-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common Stock 883556102 43,992 5,087 13.08 12,814 12.15 0.2881
2019-08-12 2019-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common Stock 883556102 38,905 2,902 8.06 11,426 15.95 0.2794
2019-04-10 2019-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common Stock 883556102 36,003 35,911 39,033.70 9,854 46,823.81 0.2734
2019-02-13 2018-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common Stock 883556102 92 -21,674 -99.58 21 -99.60 0.0007
2018-11-14 2018-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common Stock 883556102 21,766 3,219 17.36 5,313 38.29 0.2000
2018-08-14 2018-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common Stock 883556102 18,547 3,100 20.07 3,842 20.48 0.1739
2018-05-14 2018-03-31 13F Thermo Fisher Scientific COM 883556102 15,447 1,700 12.37 3,189 22.18 0.1764
2018-02-14 2017-12-31 13F Thermo Fisher Scientific Com 883556102 13,747 3,433 33.28 2,610 33.78 0.1831
2017-11-08 2017-09-30 13F Thermo Fisher Scientific Com 883556102 10,314 1,247 13.75 1,951 23.32 0.1729
2017-08-08 2017-06-30 13F THERMO FISHER SCIENTIFIC INC COM Com 883556102 9,067 696 8.31 1,582 23.02 0.1565
2017-05-09 2017-03-31 13F THERMO FISHER SCIENTIFIC INC COM Com 883556102 8,371 501 6.37 1,286 15.86 0.1577
2017-02-08 2016-12-31 13F THERMO FISHER SCIENTIFIC INC COM Com 883556102 7,870 -340 -4.14 1,110 -15.01 0.1582
2016-11-10 2016-09-30 13F THERMO FISHER SCIENTIFIC INC COM Com 883556102 8,210 74 0.91 1,306 8.65 0.1985
2016-08-12 2016-06-30 13F THERMO FISHER SCIENTIFIC INC COM Com 883556102 8,136 705 9.49 1,202 14.26 0.1898
2016-05-13 2016-03-31 13F THERMO FISHER SCIENTIFIC INC COM Com 883556102 7,431 383 5.43 1,052 5.20 0.2387
2016-02-17 2015-12-31 13F THERMO FISHER SCIENTIFIC INC COM Com 883556102 7,048 7,048 0.00 1,000 0.2349
2015-05-29 2015-03-31 13F Thermo Fisher Scientific cs 883556102 0 -2,887 -100.00 0 -100.00
2015-02-18 2013-12-31 13F Thermo Fisher Scientific cs 883556102 2,887 2,887 362 0.0870
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.