Duke Lenaghan
Investment Adviser Representative at Merrill Lynch, Pierce, Fenner & Smith Incorporated
Professional summary
Compiled by AdvisorFinder from public regulatory records. This advisor has not provided a personal biography.
Duke Lenaghan is an investment adviser representative with Merrill Lynch, Pierce, Fenner & Smith Incorporated in Boston, MA, where they have been registered since 2025. They have worked in the securities industry since 2022 and have been registered with 3 firms, including Strategic Advisers LLC and Fidelity Personal and Workplace Advisors. They have passed 4 industry qualification exams, including the Series 66 (combined investment adviser and state securities agent), Series 7 (general securities representative), and Series 63 (state securities agent). They are registered to provide investment advice in Connecticut.
Office
Advisors at this office: 208
Branch office as filed with FINRA, counting current advisors in the directory who work there.
Registrations & licenses
- Investment adviser:
- Connecticut
- Broker:
2 states and territories
Connecticut, Massachusetts
Registration requirements vary by state and service. Contact the advisor's firm to confirm whether they can serve you.
Financial-firm registration history
Registration history as reported to FINRA, most recent first.
Reported employment history
Employment the advisor reported on their SEC/FINRA filings, as of October 8, 2026. It may not be a complete history.
- Olympia SportsJun 2016 – Dec 2018Pembroke, MA
- Cantella and CoMay 2018 – Aug 2018Malden, MA
- Chestnut Hill Wealth ManagementMay 2019 – Aug 2019Malden, MA
- Cantella and CoMay 2021 – May 2022Malden, MA
- Fidelity InvestmentsJun 2022 – Sep 2023Smithfield, RI
- Thayer AcademyJun 2012 – May 2018Braintree, MA
- University of Massachusetts AmherstSep 2018 – May 2022Amherst, MA
- LaxachusettsMay 2022 – Jun 2022Weymouth, MA
- OystermanJun 2020 – Aug 2020Duxbury, MA
- UBS Financial ServicesDec 2020 – Feb 2021Rockland, MA
- Fidelity InvestmentsMar 2025 – May 2025Boston, MA
- Merrill Lynch, Pierce, Fenner & Smith IncorporatedMay 2025 – no end date reportedBoston, MA
- Fidelity InvestmentsSep 2023 – May 2025Smithfield, RI
- Bank of America, N.A.Jul 2025 – no end date reportedBoston, MA
Official records & sources
Data as of June 28, 2026 · Source: SEC IAPD & FINRA BrokerCheck
About Merrill Lynch, Pierce, Fenner & Smith Incorporated
These details describe the firm overall. Individual advisors' services, clients, and fees may differ.
Fee arrangements the firm reports
- Percentage of assets under management
- Commissions
- Fixed fee
Arrangements the firm reports on its Form ADV; this advisor may not charge every fee listed. Estimated from the firm's Form ADV — individual terms may differ. Not a quote.
Services the firm offers
Small Business 401(k) plans including Group 401(k) and Individual 401(k), SEP IRA, SIMPLE IRA, investment fiduciary services, recordkeeping, trading, custodial and financial wellness services, and call center educational support for employees.
Client types the firm serves
Firm assets under management
$25B+
- Firm disclosures (Form ADV)
- No disciplinary history reportedVerify on SEC IAPD
- Advisors listed on AdvisorFinder:
- 25,472
- Offices listed on AdvisorFinder:
- 26
- Main office:
- New York, NY
- SEC file number:
- 801-14235
Counts reflect AdvisorFinder directory coverage, not necessarily the firm's complete network.
Form ADV data as of September 24, 2026
View full firm profileOther advisors at Merrill Lynch, Pierce, Fenner & Smith Incorporated
Showing 12 of 25,472 in the directory
Similar advisors in Boston, MA
Other advisors whose filed branch office is in the same city.
This profile was compiled and published by AdvisorFinder as editorial content using publicly available information from the SEC's IAPD database and FINRA BrokerCheck. Duke Lenaghan has not reviewed, approved, or endorsed this profile and is not responsible for its accuracy. Regulatory records change over time — always verify the current record directly on BrokerCheck or SEC.gov before making any decision. AdvisorFinder may be compensated for referrals generated through this page.
BrokerCheck data is used subject to the FINRA BrokerCheck Terms of Use. Found something inaccurate? Report inaccurate data and we will correct any error we introduced. Errors in the underlying BrokerCheck record itself are referred to FINRA, which maintains that record.
Find the right advisor for you
Take the free 3-minute assessment to get matched with advisors who fit your goals.
Get Matched