Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionFirst Citizens Bank & Trust Co
Latest Disclosed Ownership7,664 shares
Latest Disclosed Value $ 3,767,085
First Citizens Bank & Trust Co reports 7.22% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 13, 2026 - First Citizens Bank & Trust Co filed a 13F-HR form disclosing ownership of 7,664 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $3,767,085 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 7,148 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 7.22% 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 7,664 516 7.22 3,767 -9.03 0.0427
2026-02-18 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,148 -18,544 -72.18 4,142 -66.77 0.0865
2025-10-31 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 25,692 -230 -0.89 12,461 18.56 0.2687
2025-07-30 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 25,922 3,434 15.27 10,510 -6.08 0.1902
2025-04-14 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 22,488 387 1.75 11,190 -2.67 0.2842
2025-01-21 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 22,101 -406 -1.80 11,498 -17.42 0.2110
2024-10-17 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 22,507 -574 -2.49 13,922 9.08 0.3060
2024-07-19 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 23,081 239 1.05 12,764 -3.86 0.2408
2024-04-15 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 22,842 10,421 83.90 13,276 101.38 0.2543
2024-01-22 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 12,421 -1,893 -13.22 6,593 -9.01 0.1197
2023-10-30 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 14,314 -1,030 -6.71 7,245 -9.49 0.1411
2023-08-15 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 15,344 3,916 34.27 8,006 21.55 0.1471
2023-05-11 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,428 2,135 22.97 6,587 131,620.00 0.1314
2023-01-24 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 9,293 -474 -4.85 5 -99.90 0.1550
2022-10-20 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 9,767 -2,306 -19.10 4,953 -24.49 0.1626
2022-07-26 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,073 -434 -3.47 6,559 -11.21 0.2320
2022-04-26 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 12,507 -29 -0.23 7,387 -11.69 0.2870
2022-03-11 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 12,536 1,016 8.82 8,365 27.11 0.3272
2021-10-15 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,520 115 1.01 6,581 14.39 0.3144
2021-07-14 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,405 -2,597 -18.55 5,753 -9.97 0.2727
2021-04-14 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,002 -1,867 -11.77 6,390 -13.54 0.3013
2021-01-13 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 15,869 -986 -5.85 7,391 -0.69 0.3775
2020-10-15 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 16,855 -809 -4.58 7,442 16.26 0.5242
2020-07-15 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 17,664 415 2.41 6,401 30.85 0.5349
2020-04-17 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 17,249 1,694 10.89 4,892 -3.19 0.5914
2020-01-15 2019-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 15,555 2,367 17.95 5,053 31.52 0.4862
2020-01-15 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,188 0 3,842 288,193.9496
2019-10-17 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,188 1,993 17.80 3,842 16.88 0.4629
2019-07-11 2019-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 11,195 -4 -0.04 3,287 7.24 0.3585
2019-07-11 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,199 0 3,065
2019-04-12 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,199 -71 -0.63 3,065 21.53 0.3415
2019-01-15 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,270 -200 -1.74 2,522 -9.93 0.3067
2018-10-18 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,470 -381 -3.21 2,800 14.05 0.3110
2018-07-11 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,851 486 4.28 2,455 4.65 0.3015
2018-04-11 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,365 35 0.31 2,346 9.07 0.3189
2018-01-10 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,330 -2,371 -17.31 2,151 -17.01 0.2892
2017-10-12 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,701 -3,839 -21.89 2,592 -15.29 0.3374
2017-07-24 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 17,540 -1,715 -8.91 3,060 3.48 0.3933
2017-04-25 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 19,255 17,822 1,243.68 2,957 1,363.86 0.3583
2017-02-06 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,433 1,433 0.00 202 0.0221
2016-04-19 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 0 0 0.0000
2016-02-03 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -12,000 -100.00 0 -100.00
2015-11-03 2015-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 12,000 0 0.00 1,467 -5.78 0.1090
2015-11-03 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,000 1,467
2015-07-29 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,000 9,712 424.48 1,557 466.18 0.1078
2014-04-10 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,288 -286 -11.11 275 -4.18 0.0249
2014-02-13 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,574 -34,889 -93.13 287 -91.69 0.0261
2013-10-25 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 37,463 163 0.44 3,452 9.34 0.1319
2013-08-06 2013-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 37,300 37,300 3,157 0.1296
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.