Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionInvestment House Llc
Latest Disclosed Ownership1,653 shares
Latest Disclosed Value $ 812,499
Investment House Llc reports 1.49% decrease in ownership of TMO / Thermo Fisher Scientific Inc.

On April 29, 2026 - Investment House Llc filed a 13F-HR form disclosing ownership of 1,653 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $812,499 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 1,678 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -1.49% 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)
2026-04-29 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,653 -25 -1.49 812 -16.46 0.0423
2026-02-06 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,678 -70 -4.00 972 14.76 0.0462
2025-10-31 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,748 -2,696 -60.67 848 -52.97 0.0402
2025-08-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,444 -828 -15.71 1,802 -31.34 0.0911
2025-05-08 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 5,272 417 8.59 2,623 3.88 0.1493
2025-02-11 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,855 -1,370 -22.01 2,526 -34.42 0.1374
2024-11-07 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,225 192 3.18 3,851 15.41 0.2078
2024-07-22 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,033 3 0.05 3,336 -4.79 0.1903
2024-05-02 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,030 2,439 67.92 3,505 83.94 0.2060
2024-02-05 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,591 -6,085 -62.89 1,906 -61.10 0.1348
2023-11-09 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 9,676 -5,928 -37.99 4,898 -39.85 0.3858
2023-08-08 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 15,604 -3,775 -19.48 8,141 -27.11 0.6096
2023-05-09 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 19,379 -347 -1.76 11,169 2.83 0.9181
2023-02-07 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 19,726 1,388 7.57 10,863 16.78 1.0168
2022-10-31 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 18,338 7,338 66.71 9,301 55.64 0.8687
2022-08-09 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,000 1,537 16.24 5,976 6.92 0.5264
2022-04-14 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 9,463 5,684 150.41 5,589 121.70 0.4075
2022-02-09 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,779 2,257 148.29 2,521 189.77 0.1619
2021-11-12 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,522 415 37.49 870 55.91 0.0634
2021-07-20 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,107 50 4.73 558 15.77 0.0392
2021-05-06 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,057 -145 -12.06 482 -13.93 0.0373
2021-01-13 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,202 0 0.00 560 5.46 0.0393
2020-11-06 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,202 95 8.58 531 32.42 0.0416
2020-07-13 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,107 1,107 401 0.0353
2020-04-08 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -700 -100.00 0 -100.00
2020-02-05 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 700 0 0.00 227 11.27 0.0210
2019-11-12 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 700 0 0.00 204 -0.97 0.0206
2019-08-05 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 700 700 206 0.0216
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.