Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionToroso Investments, LLC
Latest Disclosed Ownership133,717 shares
Latest Disclosed Value $ 65,686,380
Toroso Investments, LLC ownership in TMO / Thermo Fisher Scientific Inc.

On May 15, 2026 - Toroso Investments, LLC filed a 13F-HR form disclosing ownership of 133,717 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $65,686,380 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 0 shares of Thermo Fisher Scientific Inc..

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)
2026-05-15 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 133,717 133,717 65,686 0.1385
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -73,248 -100.00 0 -100.00
2025-11-14 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 73,248 34,951 91.26 35,527 128.80 0.0711
2025-08-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 38,297 7,633 24.89 15,528 1.76 0.0933
2025-05-14 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 30,664 -49,682 -61.84 15,258 -63.50 0.1241
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 80,346 21,643 36.87 41,798 15.11 0.3286
2024-11-25 2024-09-30 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 58,703 43,003 273.90 36,312 318.23 0.3838
2024-11-14 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 58,703 43,003 36,312 0.2485
2024-08-14 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 15,700 -1,028 -6.15 8,682 -10.66 0.1167
2024-05-16 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 16,728 1,972 13.36 9,718 24.08 0.1604
2024-02-15 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 14,756 1,182 8.71 7,832 14.00 0.1823
2023-11-15 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 13,574 2,508 22.66 6,871 137,300.00 0.2090
2023-08-14 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,066 1,803 19.46 6 0.00 0.1697
2023-05-23 2023-03-31 13F/A-1 THERMO FISHER SCIENTIFIC COM 883556102 9,263 228 2.52 5 -99.90 0.1757
2023-05-15 2023-03-31 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 9,263 228 5 0.1895
2023-02-15 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 9,035 705 8.46 4,975 17.75 0.1912
2022-11-23 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,330 581 7.50 4,225 0.36 0.1756
2022-08-15 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,749 -1,689 -17.90 4,210 -24.48 0.1542
2022-05-20 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 9,438 1,051 12.53 5,575 -0.38 0.1661
2022-02-16 2021-12-31 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 8,387 1,224 17.09 5,596 36.69 0.1713
2021-11-15 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 7,163 1,327 22.74 4,094 39.06 0.1532
2021-08-13 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 5,836 2,529 76.47 2,944 95.10 0.1150
2021-05-17 2021-03-31 13F THERMO FISHER SCIENTIFIC INC COM COM 883556102 3,307 660 24.93 1,509 22.38 0.0706
2021-02-16 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,647 474 21.81 1,233 28.57 0.0852
2020-11-16 2020-09-30 13F THERMO FISHER SCIENTIFIC INC C COM 883556102 2,173 190 9.58 959 33.38 0.1281
2020-08-17 2020-06-30 13F THERMO FISHER SCIENTIFIC INC C COM 883556102 1,983 135 7.31 719 37.21 0.0976
2020-05-08 2020-03-31 13F THERMO FISHER SCIENTIFIC INC C COM 883556102 1,848 676 57.68 524 37.53 0.1554
2020-02-14 2019-12-31 13F THERMO FISHER SCIENTIFIC INC C COM 883556102 1,172 308 35.65 381 51.19 0.1605
2019-11-14 2019-09-30 13F THERMO FISHER SCIENTIFIC INC C COM 883556102 864 864 252 0.1136
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.