Stephen Ernest Mantzouris
Investment Adviser Representative at Liberty Wealth Management, LLC
Professional summary
Compiled by AdvisorFinder from public regulatory records. This advisor has not provided a personal biography.
Stephen Ernest Mantzouris is an investment adviser representative with Liberty Wealth Management, LLC in Oakland, CA, where they have been registered since 2019. They have worked in the securities industry since 2006 and have been registered with 9 firms, including O'donnell Financial Services, LLC and Liberty Group, LLC. 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 24 (general securities principal). They are registered to provide investment advice in California.
Office
Advisors at this office: 13
Branch office as filed with FINRA, counting current advisors in the directory who work there.
Registrations & licenses
- Investment adviser:
- California
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.
- Lifetime Planning Marketing, Inc.May 2010 – no end date reportedOakland, CA
- Berkshire HathawayFeb 2017 – Oct 2018Pleasanton, CA
- O'Donnell Financial Services, LLCNov 2017 – May 2019San Rafael, CA
- Liberty Group, LLCSep 2019 – Sep 2020Oakland, CA
- Liberty Wealth Management, LLCAug 2019 – no end date reportedOakland, CA
- Infinity Financial ServicesSep 2021 – Nov 2023Oakland, CA
- The Independent AdvisorsMay 2019 – no end date reportedPleseanton, CA
- AXA AdvisorsJun 2017 – Jan 2020San Francisco, CA
Official records & sources
Data as of May 30, 2026 · Source: SEC IAPD & FINRA BrokerCheck
About Liberty Wealth Management, LLC
These details describe the firm overall. Individual advisors' services, clients, and fees may differ.
Fee arrangements the firm reports
- Percentage of assets under management
- Hourly
- Fixed fee
- Performance-based fees
- Other
- Firm account minimum
- $50,000 (waivable)
- Estimated blended rate
- 0.0125
- $0 - $1,000,0001.25%
- $1,000,001 - $3,000,0001.00%
- $3,000,001 - $5,000,0000.85%
- $5,000,001 - $10,000,0000.80%
+3 more tiers on the firm profile
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
Client types the firm serves
Firm assets under management
$1B–$5B
- Firm disclosures (Form ADV)
- No disciplinary history reportedVerify on SEC IAPD
- Advisors listed on AdvisorFinder:
- 24
- Offices listed on AdvisorFinder:
- 7
- Main office:
- Oakland, CA
- SEC file number:
- 801-112351
Counts reflect AdvisorFinder directory coverage, not necessarily the firm's complete network.
Form ADV data as of September 2, 2026
View full firm profileOther advisors at Liberty Wealth Management, LLC
Showing 12 of 24 in the directory
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This profile was compiled and published by AdvisorFinder as editorial content using publicly available information from the SEC's IAPD database and FINRA BrokerCheck. Stephen Ernest Mantzouris 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.
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