WP
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William Powell

16 Years of Experience
Oakbrook Terrace, IL
1 Disclosure

William Powell is a registered investment advisor at Mariner Independent, based in Oakbrook Terrace, IL, with 16 years of industry experience. William operates on a fee-only basis, meaning they do not earn commissions from product sales. Their practice areas include Alternative Investments, Annuities, Business Owners, Charitable Giving, and 9 more. Their firm serves 4,307 clients with $7.3B in assets under management.

Compensation
Fee-Only (% of Portfolio)Fixed/Hourly
Firm Size
121 advisors
Number of Clients
4,307 clients
Average Client Portfolio
$1.7M average
Assets Under Management
$7.3B

Fee Structure

Minimum Investment:$100K
Planning is included in investment management (also available separately)
Portfolio-Based Fees (Flat)
Portfolio ValueAnnual Fee
Any2.50%

Advisory fees range up to 2.50% per annum depending on the services provided and other considerations. Fees are negotiable.

Fee Estimator
Your Portfolio Value
$500K
$0$500K$1M$5M$20M
Estimated Annual Fee
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Location

1 Mid America Plaza, Suite 1030, Oakbrook Terrace, IL, 60181

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History

Regulatory History (1)
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Employment Separation After Allegations
September 2025
Employment History
Current Registrations
Mariner Independent
November 2025 - Present · 11 mos
Previous Registrations
Mariner Independent
October 2025 - November 2025 · 1 mo
Strategic Advisers LLC
March 2025 - October 2025 · 7 mos
Fidelity Personal and Workplace Advisors
July 2018 - March 2025 · 6 yrs 8 mos
Strategic Advisers LLC
September 2016 - July 2018 · 1 yr 10 mos
Fidelity Brokerage Services LLCBroker
August 2016 - October 2025 · 9 yrs 2 mos
TD Ameritrade, INC.Broker
October 2011 - July 2016 · 4 yrs 9 mos
Amerivest Investment Management, LLC
October 2011 - July 2016 · 4 yrs 9 mos
TD Ameritrade, INC.
October 2011 - July 2016 · 4 yrs 9 mos
Northwestern Mutual Investment Services, LLCBroker
March 2009 - July 2010 · 1 yr 4 mos
State Registrations1 state
IL
Advisor

You can work with an advisor not registered in your state. Most advisors can legally serve a small number of clients across state lines without registering.

Exams
No exam information available for this advisor.
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