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Jonathan Arntz

Advisor at SEIA

Updated today

Location

Harper Woods, MI 48225

Credentials

Series 63, Series 65

Industry experience

1 year

About

Jonathan Arntz is an associate advisor at Signature Estate & Investment Advisors, LLC (SEIA) with one year of industry experience. Prior to joining SEIA in 2024, he worked at Cedar Brook Group from 2020 to 2024 and was self-employed in construction from 2011 to 2020. Outside of advisory work, he is involved in property management through BDD Unlimited LLC. SEIA serves individuals, trusts, estates, retirement plans, charitable organizations, and corporations, providing investment management, financial planning, retirement plan consulting, and investment consulting services. The firm’s investment process combines strategic macro asset allocation with tactical adjustments, and it manages the majority of its assets on a non-discretionary basis.

Client services

Based on SEIA

Financial planning Portfolio management Selection of other advisers Educational seminars or workshops

Expertise

Based on SEIA

Options & derivatives strategies ESG / Sustainable investing

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Fee options

Fixed

Financial Planning one-time fixed fees; Retirement Plan Consulting flat fees possible

Percentage

$250,000 - $999,999: 0.90% - 1.50% (Equity/Blended portfolios) $1,000,000 - $2,499,999: 0.70% - 1.30% (Equity/Blended portfolios) $2,500,000 - $4,999,999: 0.60% - 1.20% (Equity/Blended portfolios) $5,000,000 - $9,999,999: 0.50% - 1.10% (Equity/Blended portfolios) $10,000,000+: Negotiable (Equity/Blended portfolios) $250,000 - $999,999: 0.45% - 1.00% (Fixed-Income portfolios) $1,000,000 - $2,499,999: 0.40% - 0.90% (Fixed-Income portfolios) $2,500,000 - $4,999,999: 0.35% - 0.80% (Fixed-Income portfolios) $5,000,000 - $9,999,999: 0.25% - 0.70% (Fixed-Income portfolios) $10,000,000+: Negotiable (Fixed-Income portfolios)

Project-based

Investment Consulting hourly fees range from $200 to $1,000 per hour; Retirement Plan Consulting hourly fees range $200 to $1,000 per hour

Other

Account minimum: $250,000 (for Investment Management Equity/Blended portfolios household minimum); $500,000 (for Investment Management Fixed-Income portfolios household minimum); $350,000 (recommended minimum for Investment Consulting, smaller portfolios may be accepted at discretion); $100,000 (minimum for AssetMark Platform, may be waived at discretion); no minimum for Retirement Plan Consulting Fee-only: Financial Planning one-time fixed fees (up to $1,200 retainer possible), On-Going Financial Planning fees: 0.03% to 0.60% annually (added on to investment management fee)

Location

20250 Harper Ave.

Harper Woods, MI 48225

Most active in

Michigan

Work history

Seia Llc

2024 - Present (2 years)

Cedar Brook Group

2020 - 2024 (4 years)

Self-employed - Construction

2011 - 2020 (9 years)

Disclosures

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

Business activities & affiliations

Kimberly H

CFP®, CRPC®

Troy, MI

Innermost Wealth Management, LLC

I founded Innermost™ Wealth Management to create a more personal, thoughtful approach to financial planning and wealth management. My background in both finance and psychology shaped my belief that money is not just about numbers. It is deeply personal and connected to your values, goals, and life experiences. I work with professionals who want to grow and simplify their wealth, with a special focus on women navigating career growth, equity compensation, and major life transitions such as divorce. Many of my clients are balancing busy lives and complex financial decisions, and they value having a long-term financial partner who truly understands their needs. My firm is centered on ongoing wealth management through investment advisory relationships. Clients work with me for comprehensive financial planning and investment management that evolves with them over time. As a CERTIFIED FINANCIAL PLANNER® Professional, Chartered Retirement Planning Counselor℠, and Certified Divorce Financial Analyst® Candidate, I provide technical expertise and strategic guidance, while also recognizing the emotional side of financial decisions. My approach is compassionate, judgment-free, and designed to reduce stress while helping you feel more confident in your choices. I operate a fully virtual firm, working with clients across the country who appreciate flexibility and convenience. My goal is to simplify your financial life, provide clear advice, and help you align your wealth with what matters most to you. Outside of work, I enjoy traveling, photography, cooking, and spending quality time with my Beagle, Gracie.

General retirement planning General tax planning Wealth management Startup equity planning Divorce financial planning Women Professionals Life coaching / goal alignment Established Professionals Approaching retirement Dual Income Family
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John C

Series 63, Series 65

Grosse Pointe Farms, MI

Conway Asset Management, Inc.

John Conway is the principal advisor at Conway Asset Management, Inc. in Grosse Pointe Farms, MI, holding Series 63 and Series 65 licenses with 10 years of industry experience. He has been with Conway Asset Management since 1988. Conway Asset Management is an independent, state-registered advisory firm that provides discretionary portfolio management and limited hourly investment counseling to individuals, retirement plans, trusts, estates, and charitable organizations. The firm employs a fundamental investment approach focused on companies with strong growth and conservative balance sheets, managing accounts across equities, inflation hedges, fixed income, and cash equivalents.

Active portfolio management Options & derivatives strategies Concentrated stock management
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Frank C

Series 65

Detroit, MI

Jamerson-Crosby Investment Advisors LLC

Frank Crosby is a Series 65-licensed financial advisor with Jamerson-Crosby Investment Advisors LLC in Detroit, MI, bringing 12 years of industry experience. He concurrently works as a full-time research scientist at the U.S. Department of Defense's Naval Surface Warfare Center in Panama City, Florida. Jamerson-Crosby Investment Advisors LLC offers investment advisory and portfolio management services to individuals, trusts, estates, charitable organizations, foundations, and endowments. The firm employs a quantitative and economic analysis-driven investment process, combining long-term asset allocation with ongoing monitoring and rebalancing, and provides free services to nonprofit charitable organizations.

Active portfolio management Options & derivatives strategies
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Douglas N

CFP®, Series 63, Series 66

Clinton Twp, MI

Our Investment Guy

Douglas Newport is a CFP® with 21 years of industry experience, currently serving as the sole advisor at Our Investment Guy, an independent wealth management firm he established in 2018. His prior experience includes roles at Commonwealth Financial Network and Fifth Third Securities. Our Investment Guy provides wealth management and investment services to individuals, charitable organizations, corporations, and retirement plans. The firm combines passive and active investment strategies based on individualized policies and offers ongoing retirement plan consulting with a focus on advising plan sponsors and fiduciaries under ERISA.

College savings (529s, UTMA, etc.) Cash flow / budgeting Retirement income strategy
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David U

Series 66

Berkley, MI

Underhill Investments, LLC

David Underhill is the sole advisor at Underhill Investments, LLC, an independent firm based in Berkley, MI. He holds a Series 66 designation and has 14 years of experience in investment advisory services. In addition to his financial advisory work, Mr. Underhill is a licensed attorney providing estate planning services and a licensed insurance agent offering fixed annuities, life, and long-term care insurance. Underhill Investments provides discretionary portfolio management and co-advisory services primarily to individual and high-net-worth clients. The firm employs a blend of fundamental, technical, and cyclical analysis, incorporating long- and short-term positions and option strategies tailored to each client’s Investment Policy Statement.

ESG / Sustainable investing
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David R

CFP®, Series 66

Grosse Pointe Shores, MI

Tetra Wealth Management

David Rakecky is a CFP® and holds a Series 66 license, with two years of industry experience. He is the sole advisor at Tetra Wealth Management in Grosse Pointe Shores, MI. Prior to his current role, he worked at Raymond James & Associates and Rocket Mortgage. Tetra Wealth Management serves inheritors, high-net-worth individuals, and foundations or charities, generally focusing on clients with investable assets of $1 million or more. The firm provides financial planning and discretionary portfolio management with an investment approach that combines fundamental, technical, and cyclical analysis within a long-term buy-and-hold strategy, supplemented by short-term trading and options when appropriate.

Income planning Debt management Options & derivatives strategies Tax-loss harvesting
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