Thermo Fisher Scientific Inc.
US ˙ NYSE ˙ US8835561023

SecurityTMO / Thermo Fisher Scientific Inc.
InstitutionDavis R M Inc
Latest Disclosed Ownership122,992 shares
Latest Disclosed Value $ 60,508,436
Davis R M Inc reports 0.92% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 13, 2026 - Davis R M Inc filed a 13F-HR form disclosing ownership of 122,992 shares of Thermo Fisher Scientific Inc. (US:TMO) valued at $60,454,258 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 124,131 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -0.92% during the quarter. The current value of the position is $58,292,058 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)
2026-05-13 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 122,992 -1,139 -0.92 60,508 -15.88 1.0739
2026-02-12 2025-12-31 13F Thermo Fisher Scientific COM 883556102 124,131 -1,748 -1.39 71,928 17.81 1.2383
2025-11-12 2025-09-30 13F Thermo Fisher Scientific COM 883556102 125,879 -2,494 -1.94 61,054 17.30 1.0673
2025-08-07 2025-06-30 13F Thermo Fisher Scientific COM 883556102 128,373 -1,322 -1.02 52,050 -19.35 0.9652
2025-05-08 2025-03-31 13F Thermo Fisher Scientific COM 883556102 129,695 -1,380 -1.05 64,536 -5.36 1.2922
2025-02-07 2024-12-31 13F Thermo Fisher Scientific COM 883556102 131,075 -818 -0.62 68,189 -16.42 1.3307
2024-11-13 2024-09-30 13F Thermo Fisher Scientific COM 883556102 131,893 4,225 3.31 81,585 15.56 1.5766
2024-08-09 2024-06-30 13F Thermo Fisher Scientific COM 883556102 127,668 -2,688 -2.06 70,601 -6.82 1.4335
2024-05-10 2024-03-31 13F Thermo Fisher Scientific COM 883556102 130,356 -606 -0.46 75,764 8.99 1.5861
2024-02-09 2023-12-31 13F Thermo Fisher Scientific COM 883556102 130,962 -7,341 -5.31 69,513 99,204.29 1.6037
2023-11-14 2023-09-30 13F Thermo Fisher Scientific COM 883556102 138,303 -3,678 -2.59 70 -5.41 1.7562
2023-08-10 2023-06-30 13F Thermo Fisher Scientific COM 883556102 141,981 -1,772 -1.23 74 -9.76 1.7793
2023-05-01 2023-03-31 13F Thermo Fisher Scientific COM 883556102 143,753 -886 -0.61 83 3.80 2.1100
2023-02-14 2022-12-31 13F Thermo Fisher Scientific COM 883556102 144,639 67 0.05 80 -99.89 2.1468
2022-11-08 2022-09-30 13F Thermo Fisher Scientific COM 883556102 144,572 -155 -0.11 73,326 -6.74 2.1268
2022-08-08 2022-06-30 13F Thermo Fisher Scientific COM 883556102 144,727 763 0.53 78,627 -7.53 2.1922
2022-05-05 2022-03-31 13F Thermo Fisher Scientific COM 883556102 143,964 194 0.13 85,033 -11.36 2.0248
2022-02-08 2021-12-31 13F Thermo Fisher Scientific COM 883556102 143,770 -711 -0.49 95,929 16.21 2.1380
2021-11-08 2021-09-30 13F Thermo Fisher Scientific COM 883556102 144,481 135 0.09 82,546 13.36 2.0469
2021-08-12 2021-06-30 13F Thermo Fisher Scientific COM 883556102 144,346 440 0.31 72,818 10.87 1.8306
2021-05-10 2021-03-31 13F Thermo Fisher Scientific COM 883556102 143,906 -1,945 -1.33 65,676 -3.33 1.8046
2021-01-27 2020-12-31 13F Thermo Fisher Scientific COM 883556102 145,851 -1,683 -1.14 67,935 4.29 1.9496
2020-12-01 2020-09-30 13F Thermo Fisher Scientific COM 883556102 147,534 -3,564 -2.36 65,139 18.98 2.1288
2020-07-20 2020-06-30 13F Thermo Fisher Scientific COM 883556102 151,098 -2,310 -1.51 54,749 25.84 1.9511
2020-04-24 2020-03-31 13F Thermo Fisher Scientific COM 883556102 153,408 -1,577 -1.02 43,507 -13.59 1.8081
2020-01-23 2019-12-31 13F Thermo Fisher Scientific COM 883556102 154,985 -2,256 -1.43 50,350 9.93 1.6507
2019-10-24 2019-09-30 13F Thermo Fisher Scientific COM 883556102 157,241 -1,259 -0.79 45,800 -1.61 1.6133
2019-07-31 2019-06-30 13F Thermo Fisher Scientific COM 883556102 158,500 -1,712 -1.07 46,548 6.15 1.6564
2019-04-29 2019-03-31 13F Thermo Fisher Scientific COM 883556102 160,212 -1,046 -0.65 43,853 21.52 1.6322
2019-01-18 2018-12-31 13F Thermo Fisher Scientific COM 883556102 161,258 -490 -0.30 36,088 -8.59 1.4774
2018-10-17 2018-09-30 13F Thermo Fisher Scientific COM 883556102 161,748 -1,219 -0.75 39,479 16.95 1.4325
2018-07-19 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 162,967 2,940 1.84 33,757 2.17 1.3134
2018-04-19 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 160,027 2,811 1.79 33,039 10.68 1.3168
2018-01-16 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 157,216 4,427 2.90 29,852 3.27 1.1706
2017-10-24 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 152,789 1,466 0.97 28,908 9.50 1.1947
2017-07-31 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 151,323 3,242 2.19 26,401 16.07 1.1159
2017-05-03 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 148,081 15,535 11.72 22,745 21.62 1.0282
2017-01-18 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 132,546 62,418 89.01 18,702 67.66 0.8937
2016-10-19 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 70,128 23,265 49.64 11,155 61.11 0.5442
2016-07-14 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 46,863 29,705 173.13 6,924 185.06 0.3402
2016-04-18 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 17,158 14,111 463.11 2,429 462.27 0.1237
2016-01-14 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,047 454 17.51 432 36.28 0.0221
2015-10-16 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,593 2,593 317 0.0169
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.