Thermo Fisher Scientific Inc.
CL ˙ SNSE ˙ US8835561023
SecurityCL:TMOCL / Thermo Fisher Scientific Inc.
InstitutionAdvisor OS, LLC
Latest Disclosed Ownership1,561 shares
Latest Disclosed Value $ 767,440
Advisor OS, LLC reports 56.26% increase in ownership of TMOCL / Thermo Fisher Scientific Inc.

On May 7, 2026 - Advisor OS, LLC filed a 13F-HR form disclosing ownership of 1,561 shares of Thermo Fisher Scientific Inc. (CL:TMOCL) valued at $767,440 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 999 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of 56.26% 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)
2026-05-07 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,561 562 56.26 767 32.47 0.0216
2026-02-04 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 999 124 14.17 579 36.56 0.0171
2025-11-12 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 875 105 13.64 425 35.90 0.0366
2025-08-14 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 770 -1,172 -60.35 312 -67.70 0.0307
2025-05-06 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,942 66 3.52 967 -1.02 0.1100
2025-02-05 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,876 -1,083 -36.60 976 -46.67 0.1131
2024-11-04 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,959 -108 -3.52 1,830 7.96 0.1822
2024-08-05 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,067 -153 -4.75 1,696 -9.41 0.1857
2024-05-09 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,220 789 32.46 1,871 45.04 0.2150
2024-02-08 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,431 -535 -18.04 1,291 -14.06 0.1680
2023-11-03 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,966 95 3.31 1,501 0.27 0.2250
2023-08-08 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,871 30 1.06 1,498 -8.55 0.2451
2023-04-25 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,841 124 4.56 1,637 9.43 0.3930
2023-02-01 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,717 212 8.46 1,496 17.70 0.3973
2022-11-04 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,505 -227 -8.31 1,271 -14.41 0.3832
2022-08-02 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,732 147 5.69 1,485 -2.69 0.4332
2022-05-11 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,585 -4,060 -61.10 1,526 -65.58 0.4419
2022-02-04 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,645 315 4.98 4,433 22.59 0.9044
2021-11-15 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,330 -99 -1.54 3,616 11.47 0.7861
2021-08-10 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 6,429 -227 -3.41 3,244 6.82 0.6732
2021-05-13 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,656 143 2.20 3,037 0.07 0.6885
2021-02-10 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,513 3,288 101.95 3,035 113.28 0.8145
2020-11-12 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,225 2,103 187.43 1,423 249.63 0.5972
2020-08-28 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,122 1,122 407 0.2427
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.