Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionAptus Capital Advisors, LLC
Latest Disclosed Ownership46,240 shares
Latest Disclosed Value $ 22,728,360
Aptus Capital Advisors, LLC ownership in TMO / Thermo Fisher Scientific Inc.

On May 11, 2026 - Aptus Capital Advisors, LLC filed a 13F-HR form disclosing ownership of 46,240 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $22,728,360 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 57,944 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -20.20% during the quarter.

Aptus Capital 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)
2026-05-11 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 46,240 -11,704 -20.20 22,728 -32.31 0.1721
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 57,944 1,757 3.13 33,576 23.21 0.2405
2025-11-12 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 56,187 44,485 380.15 27,252 474.43 0.1982
2025-08-11 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 11,702 3,031 34.96 4,745 9.97 0.0387
2025-05-13 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,671 -34,309 -79.83 4,315 -80.71 0.0444
2025-02-14 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 42,980 5,215 13.81 22,361 -4.28 0.2342
2024-11-05 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 37,765 5,996 18.87 23,360 32.97 0.3485
2024-07-31 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 31,769 6,695 26.70 17,568 20.55 0.3093
2024-05-15 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 25,074 2,607 11.60 14,573 22.21 0.2711
2024-02-13 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 22,467 34 0.15 11,925 5.03 0.3261
2023-11-08 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 22,433 -988 -4.22 11,355 -7.08 0.3093
2023-08-11 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 23,421 -1,234 -5.01 12,220 -14.02 0.2930
2023-05-09 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 24,655 1,709 7.45 14,211 12.46 0.3818
2023-02-13 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 22,946 -1,587 -6.47 12,636 1.54 0.3879
2022-11-02 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 24,533 1,624 7.09 12,444 -0.02 0.2995
2022-07-29 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 22,909 -16 -0.07 12,446 -8.08 0.3237
2022-05-04 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 22,925 3,033 15.25 13,540 2.01 0.3370
2022-02-02 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 19,892 3,009 17.82 13,273 37.60 0.3985
2021-10-27 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 16,883 4,049 31.55 9,646 49.00 0.2487
2021-07-27 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 12,834 6,117 91.07 6,474 111.22 0.1892
2021-05-06 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,717 155 2.36 3,065 0.29 0.1099
2021-02-10 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,562 948 16.89 3,056 23.33 0.1400
2020-10-19 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 5,614 48 0.86 2,478 22.92 0.1315
2020-07-22 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 5,566 -888 -13.76 2,016 10.16 0.1265
2020-05-07 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 6,454 6,454 1,830 0.1582
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
(%)
2026-02-13 2025-12-31 13F THERMO FISHER SCIENTIFIC COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-12 2025-09-30 13F THERMO FISHER SCIENTIFIC COM Call 600,000 -25.00 291,012 -10.28 n/a n/a n/a
2025-08-11 2025-06-30 13F THERMO FISHER SCIENTIFIC COM Call 800,000 324,368 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.