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Len Phillip Rittberg

Advisor at Greybox Investments — Ft. Lauderdale, FL

Updated today

Credentials

CFA®, Series 63

Experience

3 years

Location

Ft. Lauderdale, FL

Greybox Investments logo

Greybox Investments

Supported

Total advisors

3

Across 2 offices

Clients per advisor

35 Low

Avg AUM per client

$1,339,314 High

HNW client ratio

31% Typical

About

Len Rittberg is a CFA® charterholder based in Ft. Lauderdale, FL, with three years of industry experience. He currently works at Greybox Investments, where he has been since 2023. Prior to this, he spent six years at Exos Financial and nine years at Adelante Capital Management. Greybox Investments provides fee-only portfolio management primarily to individual and high-net-worth clients, charitable organizations, other registered investment advisers, and corporations. The firm employs a quantitative, multi-factor investment approach focused on scalable, model-driven portfolio construction and distribution to other advisers, emphasizing discretionary wealth management through separately managed and unified managed accounts.

Client services

Based on Greybox Investments

Portfolio management

Expertise

Based on Greybox Investments

Factor investing / smart beta Tax-loss harvesting ESG / Sustainable investing

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Fee options

Percentage

$0 - $1,000,000: 0.95% $1,000,001 - $2,500,000: 0.85% $2,500,001+: 0.75%

Project-based
Other

Account minimum: $500,000 Fee-only: Fee-only basis, monthly in arrears based on assets under management.

Location

See office

Ft. Lauderdale, FL

Ft. Lauderdale FL

Advisors at this office

1

Most active in

Alabama · Florida

Work history

3 years of industry experience

Greybox Investments

2023 - Present • 3 years

Birmingham, AL

Exos Financial

2017 - 2023 • 6 years

New York, NY

Adelante Capital Management

2007 - 2016 • 9 years

Oakland, CA

Disclosures

Exclamation point means they have disclosures of this type. Check mark means no disclosures of this type were found.

Business activities & affiliations

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Stuart C

ChFC®, CFS®, Series 63, Series 65

Fort Lauderdale, FL

Sound Income Strategies, LLC

Stuart Chamberlin Jr. is a financial advisor with three decades of experience in the financial services industry. He is currently registered as an Investment Advisor Representative with Sound Income Strategies, LLC, an SEC Registered Investment Advisor, where he has served clients since 2020. He is also the owner of Chamberlin Financial Inc., an insurance agency he founded in 2013, through which he offers fixed and life insurance products. Stuart holds the Chartered Financial Consultant (ChFC®) and Certified Fund Specialist (CFS®) designations. He is currently licensed as a Series 65 Investment Advisor Representative and maintains active Life, Health, and Annuity insurance licenses. His previous securities registrations include Series 7, Series 63, and Series 24 (Securities Principal). Sound Income Strategies manages approximately $4.5 billion in assets and serves a diverse client base including individuals, pension plans, trusts, corporations, and other advisers. The firm emphasizes fixed-income analysis alongside equity review and offers discretionary asset management, financial planning, and insurance planning through affiliated channels.

Income planning Annuities Retirement income strategy Roth conversion strategy Wealth management Founder/Business Owner

Kevin D

Series 63, Series 65

Hillsboro Beach, FL

Tempus Wealth Management

Kevin Dziubela is a financial advisor at Cetera with 26 years of industry experience. He holds Series 63 and Series 65 designations and has previously worked at B. Riley Wealth Management, B. Riley Wealth Advisors, and National Securities Corp. Outside of his advisory role, he owns Tempus Wealth Management, a financial services business. Cetera Investment Advisers serves a diverse client base including individual, high-net-worth, institutional, and retirement-plan clients through a network of over 6,800 independent advisors. The firm offers a range of portfolio management and financial planning services, utilizing a combination of advisor-managed accounts, firm-sponsored model portfolios, and third-party managed solutions.

Wealth management Tax-loss harvesting Retirement plans for business owners (SEP, solo 401k) Charitable giving & philanthropy Founder/Business Owner Executive Retired HENRY (High Earners, Not Rich Yet) Approaching retirement
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David A. L

Series 63, Series 65

Ft. Lauderdale, FL

David Lurch LLC

David A. Lurch is a financial advisor with David Lurch LLC in Ft. Lauderdale, FL, holding Series 63 and Series 65 licenses and with 17 years of industry experience. Prior to founding his own firm in 2024, he worked at UBS Financial Services Inc. for 11 years. He serves on the board of directors for the Miami Yacht Club, a nonprofit organization. David Lurch LLC provides portfolio management and financial planning services to individuals, high-net-worth clients, and business entities. The firm uses a blend of fundamental, quantitative, technical, and charting analyses within a modern portfolio theory framework, employing both long-term and active trading strategies across a variety of investment products.

Options & derivatives strategies Private / alternative investments Annuities Wealth management
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Luciano D

Series 65, Series 66

Aventura, FL

Sardona Global Advisors LLC

Luciano Duque is a financial advisor at Sardona Global Advisors LLC in Aventura, FL, holding Series 65 and Series 66 licenses with four years of industry experience. His work history includes roles at Securitize Markets, Solomon Capital Management, SW Financial, and Morgan Stanley. Sardona Global Advisors LLC provides investment management primarily to pooled vehicles, private funds, and institutional clients, serving high-net-worth individuals, trusts, estates, and business entities. The firm employs a multi-asset, multi-manager approach with client-specific investment policy statements, focusing on due diligence and oversight of sub-advisers while managing portions of client assets directly.

Private / alternative investments Multi-state taxation Real estate investing
user avatar

Matthew H

CFP®

Pompano Beach, FL

Hinkle Financial Services LLC

Matthew Hinkle is a CFP® professional with one year of experience at Hinkle Financial Services LLC. He has been a partner at Hinkle, Rhine & Root LLC, an accounting firm, since 2022 and previously worked at Hinkle, Richter & Rhine LLP for 14 years. Hinkle Financial Services LLC provides referral and advisory services by placing clients with third-party money managers and offering comprehensive financial planning and hourly consultations. The firm does not manage client portfolios directly but emphasizes selecting external registered managers and focuses on solicitor arrangements and hourly planning engagements.

General retirement planning General tax planning
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Bruce K

CFA®, Series 66

Plantation, FL

Envision Asset Management, Inc.

Bruce Konners is the sole advisor at Envision Asset Management, Inc., an independent firm based in Plantation, Florida. He holds the CFA® designation and Series 66 license, with 17 years of industry experience. His prior experience includes roles at Cathy Pareto & Associates Inc. and Bluekey Personal Wealth Planning. Outside of his advisory work, he is involved as a director and volunteer with the University of Florida Hillel. Envision Asset Management serves individual, corporate, and institutional clients, offering portfolio management and financial planning through a boutique, one-advisor model. The firm combines traditional asset-based arrangements with a subscription-style engagement and supplements client communication with periodicals and newsletters.

Wealth management
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