Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionEnsign Peak Advisors, Inc
Latest Disclosed Ownership516,570 shares
Latest Disclosed Value $ 253,909,652
Ensign Peak Advisors, Inc reports 31.05% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 13, 2026 - Ensign Peak Advisors, Inc filed a 13F-HR form disclosing ownership of 516,570 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $253,909,652 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 749,175 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -31.05% 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)
2026-05-13 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 516,570 -232,605 -31.05 253,910 -41.51 0.4731
2026-02-12 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 749,175 -48,419 -6.07 434,109 12.22 0.7667
2025-11-13 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 797,594 271,007 51.46 386,849 81.19 0.6347
2025-08-12 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 526,587 -246,822 -31.91 213,510 -44.52 0.3655
2025-05-14 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 773,409 -287,534 -27.10 384,848 -30.27 0.7362
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,060,943 -22,086 -2.04 551,934 -17.61 0.9809
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,083,029 -90,466 -7.71 669,929 3.23 1.1782
2024-08-13 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,173,495 -46,164 -3.78 648,943 -8.46 1.1859
2024-05-14 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,219,659 132,781 12.22 708,878 22.88 1.2947
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,086,878 233,126 27.31 576,904 33.50 1.1421
2023-11-13 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 853,752 62,973 7.96 432,144 4.74 0.9226
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 790,779 23,195 3.02 412,589 -6.74 0.8365
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 767,584 2,863 0.37 442,412 5.06 0.9571
2023-02-13 2022-12-31 13F Thermo Fisher Scientific COM 883556102 764,721 -14,563 -1.87 421,124 6.55 0.9485
2022-11-14 2022-09-30 13F Thermo Fisher Scientific COM 883556102 779,284 19,273 2.54 395,246 -4.28 0.9818
2022-08-12 2022-06-30 13F Thermo Fisher Scientific COM 883556102 760,011 6,694 0.89 412,899 -7.20 0.9813
2022-05-16 2022-03-31 13F Thermo Fisher Scientific COM 883556102 753,317 -51,943 -6.45 444,947 -17.19 0.9043
2022-02-11 2021-12-31 13F Thermo Fisher Scientific COM 883556102 805,260 -16,682 -2.03 537,301 14.42 1.0270
2021-11-12 2021-09-30 13F Thermo Fisher Scientific COM 883556102 821,942 -34,857 -4.07 469,600 8.65 0.9787
2021-08-13 2021-06-30 13F Thermo Fisher Scientific COM 883556102 856,799 -19,822 -2.26 432,229 8.04 0.8719
2021-05-12 2021-03-31 13F Thermo Fisher Scientific COM 883556102 876,621 -61,007 -6.51 400,071 -8.39 0.8601
2021-02-12 2020-12-31 13F Thermo Fisher Scientific COM 883556102 937,628 -46,102 -4.69 436,728 0.55 0.9906
2020-11-12 2020-09-30 13F Thermo Fisher Scientific COM 883556102 983,730 -39,505 -3.86 434,336 17.15 1.0974
2020-08-12 2020-06-30 13F Thermo Fisher Scientific COM 883556102 1,023,235 -34,022 -3.22 370,758 23.65 1.0076
2020-05-11 2020-03-31 13F Thermo Fisher Scientific COM 883556102 1,057,257 -886 -0.08 299,835 -12.78 1.0039
2020-02-14 2019-12-31 13F Thermo Fisher Scientific COM 883556102 1,058,143 1,058,143 343,760 0.9080
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.