Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionSumitomo Life Insurance Co
Latest Disclosed Ownership34,481 shares
Latest Disclosed Value $ 16,948,446
Sumitomo Life Insurance Co reports 21.11% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 12, 2026 - Sumitomo Life Insurance Co filed a 13F-HR form disclosing ownership of 34,481 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $16,948,446 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 28,470 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 21.11% 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 INC COM Common 883556102 34,481 6,011 21.11 16,948 2.74 0.3983
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 28,470 1,437 5.32 16,497 25.82 0.4517
2025-11-12 2025-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 27,033 1,262 4.90 13,112 25.48 0.4071
2025-08-05 2025-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 25,771 1,841 7.69 10,449 -12.24 0.7087
2025-05-02 2025-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 23,930 4,499 23.15 11,908 17.80 0.4260
2025-01-23 2024-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 19,431 693 3.70 10,109 -12.79 0.1908
2024-10-16 2024-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 18,738 1,150 6.54 11,591 22.57 0.2276
2024-07-19 2024-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 17,588 -102 -0.58 9,457 -2.60 0.2188
2024-04-26 2024-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 17,690 4,186 31.00 9,709 35.45 0.2521
2024-01-30 2023-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 13,504 4,429 48.80 7,168 56.04 0.2229
2023-10-23 2023-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 9,075 -277 -2.96 4,593 -5.86 0.1293
2023-07-20 2023-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 9,352 -378 -3.88 4,879 97,480.00 0.2146
2023-04-27 2023-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 9,730 -241 -2.42 6 0.00 0.4718
2023-01-18 2022-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 9,971 -82 -0.82 5 -99.90 0.4049
2022-10-31 2022-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 10,053 -462 -4.39 5,099 -10.75 0.2161
2022-07-22 2022-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 10,515 189 1.83 5,713 -6.33 0.1599
2022-04-27 2022-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 10,326 -140 -1.34 6,099 -12.66 0.1509
2022-02-04 2021-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 10,466 -291 -2.71 6,983 13.62 0.1662
2021-10-25 2021-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 10,757 -414 -3.71 6,146 9.07 0.1644
2021-07-20 2021-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 11,171 -2,008 -15.24 5,635 -6.32 0.1792
2021-04-27 2021-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 13,179 -486 -3.56 6,015 -5.50 0.2420
2021-02-05 2020-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 13,665 -1,917 -12.30 6,365 -7.49 0.2689
2020-10-29 2020-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 15,582 -1,115 -6.68 6,880 13.72 0.3201
2020-07-22 2020-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 16,697 -1,007 -5.69 6,050 20.49 0.3243
2020-05-01 2020-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 17,704 709 4.17 5,021 -9.06 0.3573
2020-01-24 2019-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 16,995 870 5.40 5,521 17.54 0.6255
2019-10-24 2019-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 16,125 -4,884 -23.25 4,697 -23.87 0.6111
2019-07-26 2019-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 21,009 775 3.83 6,170 11.41 0.7282
2019-04-17 2019-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 20,234 -2,294 -10.18 5,538 9.84 0.7444
2019-01-24 2018-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 22,528 -2,584 -10.29 5,042 -3.08 0.6988
2018-07-23 2018-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 25,112 1,742 7.45 5,202 7.81 0.6380
2018-04-27 2018-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 23,370 -3,224 -12.12 4,825 -4.46 0.6379
2018-02-01 2017-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 26,594 -1,099 -3.97 5,050 -3.63 0.6336
2017-10-17 2017-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 27,693 -1,359 -4.68 5,240 3.37 0.6675
2017-07-27 2017-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 29,052 2,778 10.57 5,069 25.59 0.6612
2017-04-26 2017-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 26,274 2,783 11.85 4,036 21.75 0.5705
2017-01-27 2016-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 23,491 612 2.67 3,315 -8.90 0.4727
2016-10-25 2016-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 22,879 -2,825 -10.99 3,639 -4.19 0.5399
2016-07-15 2016-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 25,704 -3,941 -13.29 3,798 -9.51 0.5205
2016-04-26 2016-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 29,645 195 0.66 4,197 0.48 0.5459
2016-01-21 2015-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 29,450 -1,255 -4.09 4,177 11.24 0.5272
2015-10-22 2015-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 30,705 1,763 6.09 3,755 -0.03 0.4982
2015-07-29 2015-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 28,942 -1,157 -3.84 3,756 -7.10 0.4576
2015-04-30 2015-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 30,099 30,099 0.00 4,043 0.4459
2015-02-04 2014-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 0 -35,122 -100.00 0 -100.00
2014-11-04 2014-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 35,122 -1,065 -2.94 4,274 0.09 0.4179
2014-07-30 2014-06-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 36,187 -12,702 -25.98 4,270 -27.36 0.4082
2014-05-02 2014-03-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 48,889 -5,660 -10.38 5,878 -3.23 0.5706
2014-02-07 2013-12-31 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 54,549 -15 -0.03 6,074 20.80 0.5467
2013-11-13 2013-09-30 13F THERMO FISHER SCIENTIFIC INC COM Common 883556102 54,564 54,564 5,028 0.4686
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.