Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionCohen Klingenstein LLC
Latest Disclosed Ownership19,590 shares
Latest Disclosed Value $ 9,629,073
Cohen Klingenstein LLC ownership in TMO / Thermo Fisher Scientific Inc.

On April 15, 2026 - Cohen Klingenstein LLC filed a 13F-HR form disclosing ownership of 19,590 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $9,629,073 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 19,590 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 0.00% 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)
2026-04-15 2026-03-31 13F Thermo Fisher Scien COM 883556102 19,590 0 0.00 9,629 -15.17 0.3116
2026-01-20 2025-12-31 13F Thermo Fisher Scien COM 883556102 19,590 0 0.00 11,351 19.47 0.3449
2025-10-16 2025-09-30 13F Thermo Fisher Scien COM 883556102 19,590 0 0.00 9,502 19.63 0.2977
2025-07-18 2025-06-30 13F Thermo Fisher Scien COM 883556102 19,590 0 0.00 7,943 -18.52 0.2650
2025-04-15 2025-03-31 13F Thermo Fisher Scien COM 883556102 19,590 0 0.00 9,748 -4.36 0.3532
2025-01-15 2024-12-31 13F Thermo Fisher Scien COM 883556102 19,590 -5,500 -21.92 10,191 -34.33 0.3486
2024-10-16 2024-09-30 13F Thermo Fisher Scien COM 883556102 25,090 0 0.00 15,520 11.86 0.5407
2024-07-15 2024-06-30 13F Thermo Fisher Scien COM 883556102 25,090 0 0.00 13,875 -4.86 0.5036
2024-04-12 2024-03-31 13F Thermo Fisher Scien COM 883556102 25,090 -1,124 -4.29 14,583 4.80 0.5429
2024-01-16 2023-12-31 13F Thermo Fisher Scien COM 883556102 26,214 0 0.00 13,914 4.87 0.5689
2023-10-13 2023-09-30 13F Thermo Fisher Scien COM 883556102 26,214 -1,086 -3.98 13,269 -6.85 0.6010
2023-07-14 2023-06-30 13F Thermo Fisher Scien COM 883556102 27,300 0 0.00 14,244 -9.48 0.6170
2023-04-14 2023-03-31 13F Thermo Fisher Scien COM 883556102 27,300 0 0.00 15,735 4.66 0.7389
2023-01-13 2022-12-31 13F Thermo Fisher Scien COM 883556102 27,300 0 0.00 15,034 8.57 0.7566
2022-10-12 2022-09-30 13F Thermo Fisher Scien COM 883556102 27,300 0 0.00 13,846 -6.65 0.7340
2022-07-15 2022-06-30 13F Thermo Fisher Scien COM 883556102 27,300 0 0.00 14,832 -8.02 0.7439
2022-04-14 2022-03-31 13F Thermo Fisher Scien COM 883556102 27,300 0 0.00 16,125 -11.48 0.6696
2022-01-14 2021-12-31 13F Thermo Fisher Scien COM 883556102 27,300 -4,508 -14.17 18,216 0.24 0.7203
2021-10-15 2021-09-30 13F Thermo Fisher Scien COM 883556102 31,808 -4,443 -12.26 18,173 -0.63 0.7945
2021-07-16 2021-06-30 13F Thermo Fisher Scien COM 883556102 36,251 0 0.00 18,288 10.54 0.7862
2021-04-15 2021-03-31 13F Thermo Fisher Scien COM 883556102 36,251 0 0.00 16,544 -2.02 0.7633
2021-01-25 2020-12-31 13F/A-1 Thermo Fisher Scien COM 883556102 36,251 0 0.00 16,885 5.49 0.8436
2021-01-19 2020-12-31 13F Thermo Fisher Scien COM 883556102 36,251 0 16,885 843,260.0127
2020-10-19 2020-09-30 13F Thermo Fisher Scien COM 883556102 36,251 0 0.00 16,006 21.86 0.9019
2020-07-15 2020-06-30 13F Thermo Fisher Scien COM 883556102 36,251 0 0.00 13,135 27.76 0.8059
2020-04-15 2020-03-31 13F Thermo Fisher Scien COM 883556102 36,251 0 0.00 10,281 -12.70 0.7605
2020-01-15 2019-12-31 13F Thermo Fisher Scien COM 883556102 36,251 0 0.00 11,777 11.54 0.6840
2019-10-17 2019-09-30 13F Thermo Fisher Scien COM 883556102 36,251 7,900 27.86 10,559 26.82 0.6636
2019-07-15 2019-06-30 13F Thermo Fisher Scien COM 883556102 28,351 -8,014 -22.04 8,326 -16.36 0.5932
2019-04-16 2019-03-31 13F Thermo Fisher Scien COM 883556102 36,365 36,365 9,954 0.6939
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.