Deborah Sue Sims
Investment Adviser Representative at Madison Avenue Securities, LLC
Professional summary
Compiled by AdvisorFinder from public regulatory records. This advisor has not provided a personal biography.
Deborah Sue Sims is an investment adviser representative with Madison Avenue Securities, LLC in San Diego, CA, where they have been registered since 2020. They have worked in the securities industry since 2001 and have been registered with 3 firms, including Cetera Investment Advisers LLC and J P Turner & Company Capital Management, LLC. They have passed 4 industry qualification exams, including the Series 65 (investment adviser), Series 63 (state securities agent), and Series 6 (investment company and variable products). They are registered to provide investment advice in California and Texas.
Registrations & licenses
- Investment adviser:
- California, Texas
- Broker:
17 states and territories
Arizona, California, Colorado, Florida, Kansas, Massachusetts, Minnesota, Missouri, Nevada, New Mexico, New York, North Carolina, Oregon, South Carolina, Texas, Utah, Virginia
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.
- Summit Brokerage Services IncSep 2015 – Sep 2019San Diego, CA
- Cetera Investment Advisers LLCOct 2015 – Mar 2020San Diego, CA
- Cetera Advisor Networks LLCSep 2019 – Mar 2020San Diego, CA
- Madison Avenue Securities, LLCMar 2020 – no end date reportedSan Diego, CA
Official records & sources
Data as of June 21, 2026 · Source: SEC IAPD & FINRA BrokerCheck
About Madison Avenue Securities, 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
- Commissions
- Hourly
- Fixed fee
- Firm account minimum
- $10,000 (waivable)
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
Full-service broker-dealer and Registered Investment Advisor services, including a broad investment offering, open-architecture business approach, customized business plans, loyalty programs, individualized training and coaching, technology partnerships for digital client experience, and operational support.
Client types the firm serves
Firm assets under management
$1B–$5B
- Firm disclosures (Form ADV)
- Disciplinary history reportedVerify on SEC IAPD
- Advisors listed on AdvisorFinder:
- 98
- Offices listed on AdvisorFinder:
- 50
- Main office:
- San Diego, CA
- SEC file number:
- 801-69919
Counts reflect AdvisorFinder directory coverage, not necessarily the firm's complete network.
Form ADV data as of September 3, 2026
View full firm profileOther advisors at Madison Avenue Securities, LLC
Showing 12 of 98 in the directory
Similar advisors in San Diego, CA
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. Deborah Sue Sims 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