Thermo Fisher Scientific Inc.
MX ˙ BMV ˙ US8835561023
SecurityMX:TMO / Thermo Fisher Scientific Inc.
InstitutionBrookstone Capital Management
Latest Disclosed Ownership8,486 shares
Latest Disclosed Value $ 4,170,927
Brookstone Capital Management ownership in TMO / Thermo Fisher Scientific Inc.

On April 16, 2026 - Brookstone Capital Management filed a 13F-HR form disclosing ownership of 8,486 shares of Thermo Fisher Scientific Inc. (MX:TMO) valued at $4,170,927 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 15, 2026 disclosing 8,548 shares of Thermo Fisher Scientific Inc.. This represents a change in shares of -0.73% during the quarter.

Brookstone Capital Management 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)
2026-04-16 2026-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,486 -62 -0.73 4,171 -15.81 0.0477
2026-01-15 2025-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,548 96 1.14 4,953 20.83 0.0567
2025-10-15 2025-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,452 -471 -5.28 4,099 13.33 0.0489
2025-07-30 2025-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 8,923 795 9.78 3,618 -10.56 0.0475
2025-04-29 2025-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 8,128 5,798 248.84 4,045 233.66 0.0580
2025-01-13 2024-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,330 -228 -8.91 1,212 -23.39 0.0176
2024-10-08 2024-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,558 76 3.06 1,582 14.89 0.0233
2024-07-18 2024-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,482 -1,905 -43.42 1,378 -45.98 0.0229
2024-04-15 2024-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,387 3,142 252.37 2,550 285.63 0.0456
2024-01-11 2023-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,245 -1,812 -59.27 661 -53.94 0.0129
2023-10-20 2023-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,057 -624 -16.95 1,436 -24.07 0.0315
2023-07-11 2023-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,681 187 5.35 1,891 -8.07 0.0380
2023-04-19 2023-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,494 -153 -4.20 2,056 5.38 0.0400
2023-01-09 2022-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 3,647 -274 -6.99 1,951 -0.61 0.0395
2022-10-14 2022-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,921 120 3.16 1,963 -6.75 0.0454
2022-07-11 2022-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 3,801 -370 -8.87 2,105 -13.84 0.0466
2022-04-12 2022-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,171 -409 -8.93 2,443 -12.12 0.0478
2022-01-11 2021-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 4,580 245 5.65 2,780 11.83 0.0479
2021-11-03 2021-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,335 151 3.61 2,486 15.52 0.0447
2021-07-14 2021-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 4,184 2,554 156.69 2,152 189.25 0.0386
2021-04-16 2021-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,630 -638 -28.13 744 -29.55 0.0285
2021-01-13 2020-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 2,268 -248 -9.86 1,056 -4.95 0.0420
2020-10-13 2020-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 2,516 578 29.82 1,111 58.26 0.0513
2020-07-21 2020-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,938 1,030 113.44 702 172.09 0.0437
2020-04-14 2020-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 908 -363 -28.56 258 -37.53 0.0148
2020-01-29 2019-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,271 167 15.13 413 28.26 0.0210
2019-10-18 2019-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,104 -4 -0.36 322 -0.92 0.0175
2019-07-25 2019-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 1,108 -136 -10.93 325 -4.69 0.0188
2019-04-18 2019-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 1,244 1,244 341 0.0221
2019-02-05 2018-12-31 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -831 -100.00 0 -100.00
2018-11-05 2018-09-30 13F THERMO FISHER SCIENTIFIC COM 883556102 831 831 203 0.0154
2018-08-06 2018-06-30 13F THERMO FISHER SCIENTIFIC COM 883556102 0 -975 -100.00 0 -100.00
2018-04-23 2018-03-31 13F THERMO FISHER SCIENTIFIC COM 883556102 975 975 201 0.0182
2016-04-14 2016-03-31 13F THERMO FISHER SCIENTIFIC COM COM 883556102 0 0 0 0.0000
2016-01-14 2015-12-31 13F THERMO FISHER SCIENTIFIC COM COM 883556102 0 -229 -100.00 0 -100.00
2015-10-28 2015-09-30 13F THERMO FISHER SCIENTIFIC COM COM 883556102 229 0 0.00 28 -6.67 0.0051
2015-08-11 2015-06-30 13F THERMO FISHER SCIENTIFIC COM COM 883556102 229 229 30 0.0038
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
(%)
2022-04-12 2022-03-31 13F THERMO FISHER SCIENTIFIC COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-01-11 2021-12-31 13F THERMO FISHER SCIENTIFIC COM Call 300 182 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.