Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionWest Branch Capital LLC
Latest Disclosed Ownership398 shares
Latest Disclosed Value $ 195,575
West Branch Capital LLC reports 81.02% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On April 14, 2026 - West Branch Capital LLC filed a 13F-HR form disclosing ownership of 398 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $195,575 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 2,097 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -81.02% 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)
2026-04-14 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 398 -1,699 -81.02 196 -83.95 0.0524
2026-01-16 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,097 -207 -8.98 1,215 8.77 0.3131
2025-10-21 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,304 -395 -14.64 1,118 2.10 0.2932
2025-07-16 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,699 -309 -10.27 1,094 -26.87 0.3237
2025-04-16 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,008 296 10.91 1,497 6.10 0.4993
2025-01-17 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,712 -40 -1.45 1,411 -17.16 0.4500
2024-10-18 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,752 68 2.53 1,702 14.69 0.5886
2024-07-26 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,684 195 7.83 1,484 2.63 0.5512
2024-04-24 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,489 339 15.77 1,446 26.73 0.5835
2024-01-19 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,150 -89 -3.97 1,141 0.71 0.5366
2023-10-20 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,239 138 6.57 1,133 3.38 0.5948
2023-08-07 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,101 43 2.09 1,096 -7.59 0.5470
2023-04-20 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,058 5 0.24 1,186 4.96 0.6609
2023-01-27 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,053 0 0.00 1,131 8.55 0.6983
2022-10-19 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,053 -42 -2.00 1,041 -8.52 0.6470
2022-07-28 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,095 -4 -0.19 1,138 -8.23 0.6582
2022-05-03 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,099 -94 -4.29 1,240 -15.24 0.5925
2022-01-24 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,193 216 10.93 1,463 29.47 0.6227
2021-11-09 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,977 37 1.91 1,130 15.42 0.5437
2021-08-17 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,940 -33 -1.67 979 8.66 0.4811
2021-05-14 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,973 -60 -2.95 901 -4.86 0.5272
2021-02-08 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,033 155 8.25 947 14.23 0.5596
2020-10-13 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,878 277 17.30 829 42.93 0.5290
2020-07-08 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,601 1,601 580 0.4086
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.