Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionNissay Asset Management Corp /japan/ /adv
Latest Disclosed Ownership99,415 shares
Latest Disclosed Value $ 48,865,455
Nissay Asset Management Corp /japan/ /adv reports 50.48% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - Nissay Asset Management Corp /japan/ /adv filed a 13F-HR form disclosing ownership of 99,415 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $48,865,455 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 200,748 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -50.48% 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)
2026-05-15 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 99,415 -101,333 -50.48 48,865 -57.99 0.2590
2026-02-17 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 200,748 147,682 278.30 116,323 351.95 0.6050
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 53,066 892 1.71 25,738 21.67 0.1421
2025-08-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 52,174 224 0.43 21,154 -18.17 0.1238
2025-05-15 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 51,950 254 0.49 25,850 -4.95 0.1680
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 51,696 -364 -0.70 27,196 -15.55 0.1659
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 52,060 -128 -0.25 32,203 11.58 0.2039
2024-08-14 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 52,188 554 1.07 28,860 -3.84 0.1910
2024-05-15 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 51,634 -42,420 -45.10 30,010 -39.89 0.2079
2024-02-14 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 94,054 16,933 21.96 49,923 27.89 0.4015
2023-11-14 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 77,121 -8,265 -9.68 39,036 -12.38 0.3460
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 85,386 -83,486 -49.44 44,550 -54.23 0.3842
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 168,872 -3,956 -2.29 97,333 2.27 0.8695
2023-02-14 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 172,828 26,724 18.29 95,175 28.44 0.9097
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 146,104 -491 -0.33 74,102 -6.96 0.7781
2022-08-15 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 146,595 81,367 124.74 79,642 106.72 0.7927
2022-05-16 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 65,228 8,248 14.48 38,527 1.34 0.3356
2022-02-14 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 56,980 4,549 8.68 38,019 26.92 0.2912
2021-11-10 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 52,431 2,485 4.98 29,955 18.89 0.2539
2021-08-13 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 49,946 -91,230 -64.62 25,196 -60.89 0.2212
2021-05-11 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 141,176 -15,732 -10.03 64,430 -11.84 0.6352
2021-02-08 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 156,908 -27,318 -14.83 73,085 -10.15 1.0988
2020-10-20 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 184,226 -4,131 -2.19 81,339 19.18 1.3742
2020-07-27 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 188,357 18,086 10.62 68,249 41.33 1.3245
2020-05-05 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 170,271 58,990 53.01 48,289 33.57 1.2295
2020-02-14 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 111,281 10,366 10.27 36,152 22.99 0.8035
2019-11-14 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 100,915 -12,552 -11.06 29,394 -11.79 0.7274
2019-08-07 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 113,467 17,263 17.94 33,323 26.54 0.8424
2019-05-03 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 96,204 20,435 26.97 26,333 55.30 0.6958
2019-02-06 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 75,769 17,990 31.14 16,956 20.23 0.5167
2018-10-30 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 57,779 1,573 2.80 14,103 21.13 0.3795
2018-08-08 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 56,206 -288 -0.51 11,643 -0.18 0.3406
2018-05-14 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 56,494 -1,762 -3.02 11,664 5.44 0.3645
2018-02-14 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 58,256 58,256 11,062 0.3369
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.