Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionBartlett & Co. Wealth Management Llc
Latest Disclosed Ownership182,938 shares
Latest Disclosed Value $ 84,626,851
Bartlett & Co. Wealth Management Llc reports 5.88% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On May 6, 2026 - Bartlett & Co. Wealth Management Llc filed a 13F-HR form disclosing ownership of 182,938 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $84,626,851 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 22, 2026 disclosing 194,369 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -5.88% 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)
2026-05-06 2026-03-31 13F Thermo Fisher Scientific COM 883556102 182,938 -11,431 -5.88 84,627 -24.91 1.0374
2026-01-22 2025-12-31 13F Thermo Fisher Scientific COM 883556102 194,369 2,109 1.10 112,701 20.76 1.4749
2025-10-09 2025-09-30 13F Thermo Fisher Scientific COM 883556102 192,260 1,396 0.73 93,323 20.48 1.2350
2025-07-18 2025-06-30 13F Thermo Fisher Scientific COM 883556102 190,864 912 0.48 77,459 -18.12 1.0811
2025-04-24 2025-03-31 13F Thermo Fisher Scientific COM 883556102 189,952 9,989 5.55 94,601 0.97 1.3938
2025-01-17 2024-12-31 13F Thermo Fisher Scientific COM 883556102 179,963 79 0.04 93,692 -15.85 1.3591
2024-10-17 2024-09-30 13F Thermo Fisher Scientific COM 883556102 179,884 913 0.51 111,340 12.42 1.5979
2024-07-12 2024-06-30 13F Thermo Fisher Scientific COM 883556102 178,971 2,033 1.15 99,040 -3.76 1.5027
2024-05-09 2024-03-31 13F Thermo Fisher Scientific COM 883556102 176,938 3,053 1.76 102,906 10.97 1.5833
2024-02-14 2023-12-31 13F Thermo Fisher Scientific COM 883556102 173,885 3,541 2.08 92,731 7.47 1.5053
2024-02-14 2023-09-30 13F Thermo Fisher Scientific COM 883556102 170,344 5,234 3.17 86,282 0.09 1.5489
2024-02-14 2023-06-30 13F Thermo Fisher Scientific COM 883556102 165,110 23,369 16.49 86,203 5.46 1.4910
2024-02-14 2023-03-31 13F Thermo Fisher Scientific COM 883556102 141,741 951 0.68 81,742 5.37 1.5787
2024-02-14 2022-12-31 13F Thermo Fisher SCNTFC COM 883556102 140,790 7,101 5.31 77,574 14.34 1.5605
2024-02-14 2022-09-30 13F Thermo Fisher SCNTFC COM 883556102 133,689 -17 -0.01 67,848 -6.65 1.4584
2024-02-14 2022-06-30 13F Thermo Fisher SCNTFC COM 883556102 133,706 -3,580 -2.61 72,680 -10.42 1.4723
2024-02-14 2022-03-31 13F Thermo Fisher SCNTFC COM 883556102 137,286 3,490 2.61 81,129 -9.16 1.4180
2024-02-14 2021-12-31 13F Thermo Fisher SCNTFC COM 883556102 133,796 -543 -0.40 89,309 16.31 1.5145
2024-02-14 2021-09-30 13F Thermo Fisher Scientific COM 883556102 134,339 -1,606 -1.18 76,787 11.91 1.4635
2024-02-14 2021-06-30 13F Thermo Fisher Scientific COM 883556102 135,945 106 0.08 68,616 10.62 1.3085
2024-02-14 2021-03-31 13F Thermo Fisher Scientific COM 883556102 135,839 -2,460 -1.78 62,030 -3.75 1.2470
2024-02-13 2020-12-31 13F Thermo Fisher Scientific COM 883556102 138,299 -152 -0.11 64,447 5.38 1.3745
2024-02-13 2020-09-30 13F Thermo Fisher Scientific COM 883556102 138,451 -132 -0.10 61,159 21.72 1.4344
2024-02-13 2020-06-30 13F Thermo Fisher Scientific COM 883556102 138,583 -1,069 -0.77 50,245 26.76 1.3113
2024-02-13 2020-03-31 13F Thermo Fisher Scientific COM 883556102 139,652 -717 -0.51 39,636 -13.13 1.2068
2024-02-13 2019-12-31 13F Thermo Fisher Scientific COM 883556102 140,369 625 0.45 45,628 12.03 1.1131
2024-02-13 2019-09-30 13F Thermo Fisher Scientific COM 883556102 139,744 85,857 159.33 40,730 157.27 1.0686
2024-02-13 2019-06-30 13F Thermo Fisher Scientific COM 883556102 53,887 52,841 5,051.72 15,832 5,435.31 0.5902
2024-02-13 2019-03-31 13F Thermo Fisher Scientific COM 883556102 1,046 78 8.06 287 32.41 0.0110
2024-02-13 2018-12-31 13F Thermo Fisher Scientific COM 883556102 968 -35 -3.49 217 -11.48 0.0092
2024-02-13 2018-09-30 13F Thermo Fisher Scientific COM 883556102 1,003 0 0.00 245 17.87 0.0092
2024-02-13 2018-06-30 13F Thermo Fisher Scientific COM 883556102 1,003 200 24.91 208 25.45 0.0084
2024-02-13 2018-03-31 13F Thermo Fisher Scientific COM 883556102 803 803 166 0.0068
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.