user avatar

Jonathan Arntz

Advisor at SEIA

Updated today
SEIA logo

Firm

SEIA

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

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
user avatar

John C

Series 63, Series 65

Grosse Pointe Farms, MI

Conway Asset Management, Inc.

Active portfolio management Options & derivatives strategies Concentrated stock management
user avatar

Frank C

Series 65

Detroit, MI

Jamerson-Crosby Investment Advisors LLC

Active portfolio management Options & derivatives strategies
user avatar

Douglas N

CFP®, Series 63, Series 66

Clinton Twp, MI

Our Investment Guy

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

David U

Series 66

Berkley, MI

Underhill Investments, LLC

ESG / Sustainable investing
user avatar

David R

CFP®, Series 66

Grosse Pointe Shores, MI

Tetra Wealth Management

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

Not sure where to start?

We'll help you think it through – whether you ultimately need an advisor or not.

Call (201) 292-4557

Warmer provides personalized recommendations and introductions to independent fiduciary advisors. We do not supervise advisors, manage or hold assets, guarantee performance, or provide advice about specific investments.

Each advisor listed on our site is an independent fiduciary responsible for their own advice. Warmer may receive fees from advisors for participation or referrals; these fees are paid by advisors and do not affect the fees clients pay for advisory services.

For advisor listings, we rely on sources including public filings and data provided by advisors, and we cannot guarantee that all information is current or accurate. Please review an advisor's Form ADV and do your own diligence before entering into an advisory relationship.

By using our service, you agree to Warmer's Terms of Service and Advisory Agreement and Privacy Policy. Logos provided by Logo.dev

© 2026 Warmer Holdings Inc. ("Warmer")