Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionCovington Investment Advisors Inc.
Latest Disclosed Ownership28,728 shares
Latest Disclosed Value $ 14,121
Covington Investment Advisors Inc. reports 5.06% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 12, 2026 - Covington Investment Advisors Inc. filed a 13F-HR form disclosing ownership of 28,728 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $14,121 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 30,260 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -5.06% 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)
2026-05-12 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,728 -1,532 -5.06 14 -17.65 2.0751
2026-02-17 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 30,260 -3,830 -11.23 18 6.25 2.3964
2025-11-12 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 34,090 63 0.19 17 23.08 2.1644
2025-08-12 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 34,027 1,810 5.62 14 -18.75 1.9709
2025-05-12 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 32,217 847 2.70 16 0.00 2.4915
2025-05-13 2024-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 31,370 -285 -0.90 16 -15.79 2.4493
2025-02-12 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 31,370 -285 16 1.4274
2024-11-13 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 31,655 123 0.39 20 11.76 2.9435
2024-11-13 2024-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 31,532 -1,454 -4.41 17 -10.53 2.7973
2024-08-16 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 31,577 -1,409 17 2.8025
2024-11-13 2024-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 32,986 808 2.51 19 11.76 3.1254
2024-05-14 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 32,986 808 19 3.2859
2024-11-13 2023-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 32,178 1,545 5.04 17 13.33 3.1019
2024-02-13 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 32,178 1,545 17 3.3004
2024-11-13 2023-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 30,633 1,092 3.70 16 0.00 3.1794
2023-11-13 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 30,633 1,092 16 3.3009
2024-11-13 2023-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 29,541 1,898 6.87 15 0.00 3.0802
2023-08-10 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 29,541 1,898 15 3.1727
2024-11-13 2023-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 27,643 50 0.18 16 0.00 3.5037
2023-05-09 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 27,643 50 16 3.5739
2023-02-10 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 27,593 485 1.79 15 -99.89 3.6345
2022-11-10 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 27,108 338 1.26 13,749 -5.47 3.5631
2022-08-10 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 26,770 -18 -0.07 14,544 -8.08 3.6757
2022-05-09 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 26,788 1,740 6.95 15,822 -5.33 3.3085
2022-02-10 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 25,048 23 0.09 16,713 16.89 3.4046
2021-11-10 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 25,025 400 1.62 14,298 15.09 3.0765
2021-08-09 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 24,625 1,739 7.60 12,423 18.94 2.7277
2021-08-12 2021-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 22,886 862 3.91 10,445 1.82 2.5234
2021-05-13 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 22,886 862 10,445 2.5234
2021-02-12 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 22,024 488 2.27 10,258 7.88 2.6471
2020-11-13 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 21,536 1,970 10.07 9,509 34.12 2.7269
2020-08-13 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 19,566 260 1.35 7,090 29.50 2.1779
2020-05-13 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 19,306 735 3.96 5,475 -9.25 2.0828
2020-02-12 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 18,571 3,620 24.21 6,033 38.53 1.8592
2019-11-13 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 14,951 0 0.00 4,355 -0.82 1.4754
2019-08-14 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 14,951 110 0.74 4,391 8.10 1.4298
2019-05-13 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,841 345 2.38 4,062 25.22 1.3717
2019-02-13 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,496 -157 -1.07 3,244 -9.31 1.2319
2018-11-14 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 14,653 -130 -0.88 3,577 16.82 1.1641
2018-11-13 2018-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 14,783 0 0.00 3,062 0.33 1.0512
2018-08-13 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 14,783 0 3,062
2018-05-10 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,783 625 4.41 3,052 13.54 0.9813
2018-02-13 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,158 395 2.87 2,688 3.23 0.9201
2017-11-02 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,763 -395 -2.79 2,604 5.43 0.9834
2017-11-02 2017-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 14,158 0 0.00 2,470 13.56 0.9425
2017-08-08 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 14,158 0 2,470
2017-11-02 2017-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 14,158 460 3.36 2,175 12.52 0.8698
2017-05-11 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,158 460 2,175
2017-02-09 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,698 13,698 1,933 0.8206
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.