Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionCitizens Business Bank
Latest Disclosed Ownership11,213 shares
Latest Disclosed Value $ 5,511,524
Citizens Business Bank reports 2.31% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 1, 2026 - Citizens Business Bank filed a 13F-HR form disclosing ownership of 11,213 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $5,511,524 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 11,478 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -2.31% 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)
2026-05-01 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,213 -265 -2.31 5,512 -17.13 0.6009
2026-02-02 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,478 228 2.03 6,651 21.88 1.0988
2025-11-12 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,250 4,996 79.88 5,456 115.23 0.9107
2025-07-29 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,254 42 0.68 2,536 -17.99 0.4928
2025-05-14 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,212 1,348 27.71 3,091 -3.19 0.6705
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,864 -1,452 -22.99 3,193 -18.25 0.5970
2024-11-19 2024-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 6,316 -169 -2.61 3,907 8.92 0.7884
2024-11-07 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,493 8 3,591 0.5273
2024-08-05 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,485 -167 -2.51 3,586 -7.24 0.7583
2024-04-18 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,652 -141 -2.08 3,866 7.24 0.8057
2024-02-05 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,793 -179 -2.57 3,606 2.15 0.7947
2023-11-03 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,972 -237 -3.29 3,529 -6.17 0.8294
2023-08-08 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,209 -270 -3.61 3,761 -12.74 0.8390
2023-05-09 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,479 -342 -4.37 4,311 0.09 0.9928
2023-02-08 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,821 -80 -1.01 4,307 7.44 0.9855
2022-11-04 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,901 -118 -1.47 4,008 -8.03 0.9773
2022-11-18 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,019 8 0.10 4,358 -7.90 0.6194
2022-11-18 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,011 605 8.17 4,732 -4.25 0.5715
2022-11-18 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,406 29 0.39 4,942 17.25 0.6054
2022-11-18 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,377 -7 -0.09 4,215 13.15 0.5607
2022-11-18 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,384 -56 -0.75 3,725 9.72 0.4898
2022-11-18 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,440 -103 -1.37 3,395 -3.36 0.4760
2022-11-18 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,543 -2,534 -25.15 3,513 -21.04 0.5176
2022-11-18 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 10,077 -13 -0.13 4,449 21.69 0.7568
2022-11-18 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 10,090 -222 -2.15 3,656 25.03 0.6450
2022-11-18 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 10,312 -100 -0.96 2,924 -13.54 0.6026
2022-11-18 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 10,412 -59 -0.56 3,382 10.89 0.5575
2022-11-18 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 10,471 -70 -0.66 3,050 -1.49 0.5030
2022-11-18 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 10,541 -244 -2.26 3,096 4.88 0.5124
2022-11-18 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 10,785 209 1.98 2,952 24.71 0.5090
2022-11-18 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 10,576 -411 -3.74 2,367 -11.74 0.4554
2022-11-18 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 10,987 -42 -0.38 2,682 17.43 0.4500
2022-11-18 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,029 -5,674 -33.97 2,284 -33.76 0.3957
2022-11-18 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 16,703 35 0.21 3,448 8.94 0.6046
2022-11-18 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 16,668 -5,882 -26.08 3,165 -25.81 0.5160
2022-11-18 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 22,550 -468 -2.03 4,266 6.23 0.7125
2022-11-18 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 23,018 -583 -2.47 4,016 10.79 0.6656
2022-11-18 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 23,601 -187 -0.79 3,625 8.02 0.6065
2022-11-18 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 23,788 -373 -1.54 3,356 -12.67 0.5972
2022-11-18 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 24,161 -238 -0.98 3,843 6.60 0.7145
2022-11-18 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 24,399 883 3.75 3,605 8.26 0.6767
2022-11-18 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 23,516 -1,435 -5.75 3,330 -5.93 0.6247
2022-11-18 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 24,951 -2,520 -9.17 3,540 5.39 0.6873
2022-11-18 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 27,471 -545 -1.95 3,359 -7.59 0.6326
2022-11-18 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 28,016 -190 -0.67 3,635 -4.06 0.6347
2022-11-18 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,206 680 2.47 3,789 9.86 0.6662
2022-11-18 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 27,526 1,354 5.17 3,449 8.29 0.6252
2022-11-18 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 26,172 492 1.92 3,185 5.12 0.6132
2022-11-18 2014-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 25,680 -872 -3.28 3,030 -5.08 0.5808
2022-11-18 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 26,552 18,398 225.63 3,192 251.54 0.6169
2022-11-18 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,154 2,945 56.54 908 89.17 0.1830
2022-11-18 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 5,209 5,209 480 0.1030
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.