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William Seyfarth

6 Years of Experience
Hinsdale, IL

William Seyfarth is a registered investment advisor at Vistamark Investments, based in Hinsdale, IL, with 6 years of industry experience. William operates on a fee-only basis, meaning they do not earn commissions from product sales. Their practice areas include Investment Management. Their firm serves 4 clients with $26M in assets under management.

Compensation
Fee-Only (% of Portfolio)Fixed/Hourly
Firm Size
3 advisors
Number of Clients
4 clients
Average Client Portfolio
$6.5M average
Assets Under Management
$25.9M

Fee Structure

Investment management only (planning not offered)
Portfolio-Based Fees (Flat)
Portfolio ValueAnnual Fee
Any1.25%

In certain circumstances, Vistamark Investments may charge fees on a monthly basis, utilize flat-fee pricing, or apply other customized fee structures as agreed upon with clients.

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

333 West Chestnut Street, Hinsdale, IL, 60521

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History

Regulatory History
Clean regulatory record

No disclosures, customer disputes, or regulatory actions on file.

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Employment History
Current Registrations
Vistamark Investments
October 2025 - Present · 7 mos
Previous Registrations
Sanford C. Bernstein & CO., LLCBroker
August 2023 - September 2025 · 2 yrs 1 mo
Alliancebernstein L.P.
August 2023 - September 2025 · 2 yrs 1 mo
Keebeck Wealth Management LLC
February 2022 - April 2023 · 1 yr 2 mos
Goldman Sachs & CO. LLCBroker
January 2021 - December 2021 · 11 mos
Goldman Sachs Ayco Personal Financial Management
August 2019 - December 2021 · 2 yrs 4 mos
Mercer Allied Company, L.P.Broker
August 2019 - January 2021 · 1 yr 5 mos
Dimensional Fund Advisors LP
August 2018 - March 2019 · 7 mos
Dfa Securities LLCBroker
June 2018 - March 2019 · 9 mos
State Registrations2 states
AZIL
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.