Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionValeo Financial Advisors, LLC
Latest Disclosed Ownership2,656 shares
Latest Disclosed Value $ 1,305,318
Valeo Financial Advisors, LLC ownership in TMO / Thermo Fisher Scientific Inc.

On May 8, 2026 - Valeo Financial Advisors, LLC filed a 13F-HR form disclosing ownership of 2,656 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $1,305,318 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 4,682 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -43.27% during the quarter.

Valeo Financial Advisors, LLC has a history of taking positions in derivatives of the underlying security (TMO) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:TMO / Thermo Fisher Scientific Inc. Historical Put/Call Ratio
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)
2026-05-08 2026-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 2,656 -2,026 -43.27 1,305 -51.90 0.0312
2026-02-04 2025-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 4,682 116 2.54 2,713 22.54 0.0602
2025-11-03 2025-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 4,566 2,036 80.47 2,214 116.00 0.0504
2025-09-12 2025-06-30 13F/A-1 THERMO FISHER SCIENTIFIC INC COM Stock 883556102 2,530 -1,698 -40.16 1,026 -51.26 0.0252
2025-07-22 2025-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 2,322 -1,906 942 0.0227
2025-04-30 2025-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 4,228 -34 -0.80 2,104 -5.14 0.0586
2025-01-30 2024-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 4,262 -86 -1.98 2,217 -17.55 0.0617
2024-10-10 2024-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 4,348 198 4.77 2,690 17.17 0.0767
2024-07-10 2024-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 4,150 111 2.75 2,295 -1.54 0.0717
2024-04-25 2024-03-31 13F/A-1 THERMO FISHER SCIENTIFIC INC COM Stock 883556102 4,039 255 6.74 2,331 16.09 0.0836
2024-04-19 2024-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 4,031 247 2,343 0.0806
2024-01-29 2023-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 3,784 385 11.33 2,009 16.74 0.0811
2023-10-20 2023-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 3,399 214 6.72 1,721 3.55 0.0784
2023-07-14 2023-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 3,185 -515 -13.92 1,662 -22.09 0.0759
2023-04-17 2023-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 3,700 1,012 37.65 2,133 44.05 0.1027
2023-02-09 2022-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 2,688 343 14.63 1,480 24.47 0.0812
2022-10-31 2022-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 2,345 578 32.71 1,189 24.11 0.0758
2022-08-03 2022-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,767 -1,049 -37.25 958 -42.39 0.0601
2022-04-28 2022-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 2,816 767 37.43 1,663 21.65 0.0845
2022-01-07 2021-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 2,049 -3 -0.15 1,367 16.64 0.0740
2021-11-02 2021-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 2,052 685 50.11 1,172 69.86 0.0670
2021-07-22 2021-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,367 50 3.80 690 14.81 0.0419
2021-04-12 2021-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,317 207 18.65 601 16.25 0.0278
2021-02-11 2020-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,110 34 3.16 517 8.84 0.0266
2020-10-28 2020-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,076 -573 -34.75 475 -20.44 0.0415
2020-07-20 2020-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,649 130 8.56 597 24.90 0.0543
2020-04-13 2020-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,519 -244 -13.84 478 -16.58 0.0508
2020-01-24 2019-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,763 200 12.80 573 25.93 0.0556
2019-10-15 2019-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,563 8 0.51 455 -0.44 0.0503
2019-07-10 2019-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,555 -356 -18.63 457 -12.62 0.0523
2019-04-12 2019-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,911 38 2.03 523 24.82 0.0635
2019-01-30 2018-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,873 -19 -1.00 419 -5.20 0.0588
2018-11-01 2018-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,892 25 1.34 442 2.55 0.0597
2018-08-14 2018-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,867 158 9.25 431 22.10 0.0604
2018-04-12 2018-03-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 1,709 -500 -22.63 353 -15.75 0.0566
2018-02-09 2017-12-31 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 2,209 2,176 6,593.94 419 6,883.33 0.0688
2017-11-15 2017-09-30 13F/A-1 THERMO FISHER SCIENTIFIC INC COM Stock 883556102 33 33 6 0.0014
2017-11-14 2017-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock 883556102 33 6
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-11-03 2025-09-30 13F THERMO FISHER SCIENTIFIC INC COM Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-09-12 2025-06-30 13F/A THERMO FISHER SCIENTIFIC INC COM Stock Call 100 41 n/a n/a n/a
2025-07-22 2025-06-30 13F THERMO FISHER SCIENTIFIC INC COM Stock Call 100 41 n/a n/a n/a
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.