Thermo Fisher Scientific Inc.
US ˙ NYSE ˙ US8835561023

SecurityTMO / Thermo Fisher Scientific Inc.
InstitutionCwm, Llc
Latest Disclosed Ownership26,183 shares
Latest Disclosed Value $ 12,869,726
Cwm, Llc reports 2.17% increase in ownership of TMO / Thermo Fisher Scientific Inc.

On May 14, 2026 - Cwm, Llc filed a 13F-HR form disclosing ownership of 26,183 shares of Thermo Fisher Scientific Inc. (US:TMO) valued at $12,869,730 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 25,627 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 2.17% during the quarter. The current value of the position is $12,409,433 USD.

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)
2026-05-14 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 26,183 556 2.17 12,870 91,821.43 0.0338
2026-01-26 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 25,627 9,690 60.80 15 100.00 0.0402
2025-10-15 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 15,937 4,558 40.06 8 75.00 0.0232
2025-07-25 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,379 -346 -2.95 5 -20.00 0.0163
2025-05-01 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 11,725 -7,070 -37.62 6 -44.44 0.0233
2025-02-04 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 18,795 -16,319 -46.47 10 -57.14 0.0406
2024-10-08 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 35,114 16,756 91.27 22 110.00 0.0934
2024-07-10 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,358 1,590 9.48 10 11.11 0.0479
2024-04-05 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 16,768 3,577 27.12 10 28.57 0.0474
2024-02-01 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 13,191 1,583 13.64 7 40.00 0.0376
2023-10-11 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,608 738 6.79 6 0.00 0.0360
2023-08-03 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 10,870 -65 -0.59 6 -16.67 0.0350
2023-05-01 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 10,935 1,115 11.35 6 20.00 0.0426
2023-02-01 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 9,820 1,191 13.80 5 -99.89 0.0398
2022-10-27 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,629 631 7.89 4,377 0.74 0.0348
2022-07-28 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,998 821 11.44 4,345 2.50 0.0337
2022-04-21 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 7,177 468 6.98 4,239 -5.32 0.0301
2022-01-31 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,709 -205 -2.96 4,477 28.35 0.0315
2021-09-15 2021-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 6,914 0 0.00 3,488 0.00 0.0278
2021-07-29 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,914 0 3,488 0.0278
2021-09-15 2021-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 6,914 0 0.00 3,488 0.00 0.0278
2021-04-27 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,131 -3,783 1,429 0.0126
2021-09-15 2020-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 6,914 0 0.00 3,488 0.00 0.0278
2021-01-27 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,734 -4,180 1,274 0.0119
2021-09-15 2020-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 6,914 0 0.00 3,488 0.00 0.0278
2020-10-19 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,312 -3,602 1,462 0.0163
2021-09-15 2020-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 6,914 0 0.00 3,488 0.00 0.0278
2020-07-22 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,397 -4,517 869 0.0103
2021-09-15 2020-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 6,914 0 0.00 3,488 0.00 0.0278
2020-04-28 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,692 -4,222 763 0.0114
2021-09-14 2019-12-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 6,914 0 0.00 3,488 0.00 0.0278
2020-01-27 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,052 -3,862 992 0.0127
2021-09-14 2019-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 6,914 0 0.00 3,488 0.00 0.0278
2019-10-22 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,646 -4,268 771 0.0112
2021-09-14 2019-06-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 6,914 0 0.00 3,488 0.00 0.0278
2019-07-31 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,214 -4,700 650 0.0108
2021-09-02 2019-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 6,914 4,698 212.00 3,488 603.23 0.0278
2019-04-22 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,967 -249 538 0.0108
2019-01-25 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,216 -31 -1.38 496 -9.49 0.0124
2018-10-29 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,247 68 3.12 548 21.51 0.0140
2018-07-31 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,179 727 50.07 451 50.33 0.0148
2018-04-26 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,452 615 73.48 300 88.68 0.0119
2018-01-16 2017-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 837 10 1.21 159 1.92 0.0071
2017-10-16 2017-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 827 117 16.48 156 25.81 0.0074
2017-07-17 2017-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 710 103 16.97 124 33.33 0.0064
2017-04-17 2017-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 607 -69 -10.21 93 -2.11 0.0053
2017-01-19 2016-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 676 673 22,433.33 95 0.0058
2016-10-17 2016-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3 -21 -87.50 0 -100.00
2016-07-21 2016-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 24 3 14.29 4 33.33 0.0003
2016-04-18 2016-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 21 -7 -25.00 3 -25.00 0.0003
2016-02-01 2015-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 28 7 33.33 4 33.33 0.0004
2015-10-30 2015-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 21 0 0.00 3 50.00 0.0003
2014-02-14 2013-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 21 0 0.00 2 0.00 0.0003
2013-11-14 2013-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 21 21 2 0.0005
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.