Thermo Fisher Scientific Inc.
CL ˙ SNSE ˙ US8835561023
SecurityCL:TMOCL / Thermo Fisher Scientific Inc.
InstitutionOppenheimer & Co Inc
Latest Disclosed Ownership28,773 shares
Latest Disclosed Value $ 14,142,793
Oppenheimer & Co Inc reports 3.51% decrease in ownership of TMOCL / Thermo Fisher Scientific Inc.

On April 23, 2026 - Oppenheimer & Co Inc filed a 13F-HR form disclosing ownership of 28,773 shares of Thermo Fisher Scientific Inc. (CL:TMOCL) valued at $14,142,793 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 29,819 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -3.51% 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)
2026-04-23 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28,773 -1,046 -3.51 14,143 -18.15 0.1723
2026-02-02 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 29,819 -540 -1.78 17,279 17.35 0.2454
2025-11-06 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 30,359 -1,097 -3.49 14,725 15.45 0.1796
2025-07-31 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 31,456 1,184 3.91 12,754 -15.33 0.1687
2025-04-23 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 30,272 814 2.76 15,063 -1.70 0.2274
2025-02-05 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 29,458 -807 -2.67 15,325 -18.15 0.2287
2024-11-05 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 30,265 -1,168 -3.72 18,721 7.70 0.2855
2024-08-08 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 31,433 144 0.46 17,382 -4.42 0.2759
2024-05-07 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 31,289 662 2.16 18,185 11.87 0.3016
2024-02-13 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 30,627 -1,090 -3.44 16,257 1.26 0.2988
2023-11-08 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 31,717 -975 -2.98 16,054 -5.88 0.3314
2023-08-03 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 32,692 -95 -0.29 17,057 -9.74 0.3413
2023-05-10 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 32,787 -3,942 -10.73 18,897 -6.57 0.4007
2023-02-08 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 36,729 236 0.65 20,226 9.27 0.4604
2022-11-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 36,493 -6,442 -15.00 18,510 -20.65 0.4330
2022-08-08 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 42,935 4,162 10.73 23,326 1.85 0.5021
2022-05-12 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 38,773 -1,251 -3.13 22,902 -14.24 0.4128
2022-02-02 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 40,024 498 1.26 26,706 18.26 0.4669
2021-11-12 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 39,526 -4,663 -10.55 22,582 1.30 0.4227
2021-08-03 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 44,189 1,487 3.48 22,292 14.39 0.3995
2021-05-10 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 42,702 -13,481 -23.99 19,488 -25.53 0.3889
2021-02-11 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 56,183 -5,980 -9.62 26,169 -4.66 0.5522
2020-11-13 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 62,163 -15,672 -20.13 27,447 -2.68 0.6867
2020-08-11 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 77,835 -1,856 -2.33 28,202 24.78 0.7297
2020-05-08 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 79,691 -2,439 -2.97 22,601 -15.29 0.6861
2020-02-07 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 82,130 -3,551 -4.14 26,682 6.91 0.6607
2019-10-31 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 85,681 1,177 1.39 24,957 0.56 0.6799
2019-08-09 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 84,504 -2,419 -2.78 24,818 4.31 0.6744
2019-04-24 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 86,923 -402 -0.46 23,793 21.75 0.6356
2019-01-29 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 87,325 -4,901 -5.31 19,542 -13.19 0.6110
2018-10-26 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 92,226 -1,955 -2.08 22,510 15.39 0.5730
2018-08-10 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 94,181 -282 -0.30 19,508 0.03 0.5295
2018-05-01 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 94,463 11,255 13.53 19,503 23.44 0.5010
2018-02-07 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 83,208 -527 -0.63 15,799 -0.28 0.4067
2017-11-09 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 83,735 -748 -0.89 15,843 7.48 0.4240
2017-08-09 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 84,483 9,290 12.35 14,740 27.63 0.4064
2017-05-15 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 75,193 -15,857 -17.42 11,549 -10.10 0.3269
2017-02-01 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 91,050 -392 -0.43 12,847 -11.67 0.3740
2016-11-07 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 91,442 -1,548 -1.66 14,545 5.85 0.4241
2016-08-08 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 92,990 -3,117 -3.24 13,741 0.98 0.4096
2016-04-26 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 96,107 -2,452 -2.49 13,608 -2.67 0.4132
2016-02-03 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 98,559 84 0.09 13,981 16.10 0.4160
2015-11-13 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 98,475 33,879 52.45 12,042 43.66 0.3658
2015-08-12 2015-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 64,596 -34,404 -34.75 8,382 -36.97 0.2332
2015-05-08 2015-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 99,000 33,755 51.74 13,299 62.70 0.3621
2015-02-10 2014-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 65,245 -3,439 -5.01 8,174 -2.21 0.2347
2014-11-12 2014-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 68,684 -2,433 -3.42 8,359 -0.39 0.2486
2014-08-14 2014-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 71,117 -357 -0.50 8,392 -2.35 0.2525
2014-05-09 2014-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 71,474 4,306 6.41 8,594 14.89 0.2577
2014-02-12 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 67,168 2,215 3.41 7,480 24.96 0.2393
2013-11-01 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 64,953 179 0.28 5,986 9.19 0.2104
2013-08-14 2013-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 64,774 64,774 5,482 0.2119
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.