William Seyfarth
Professional summary
William Seyfarth was a registered financial advisor .
William is registered as an IAR (Investment Advisor Representative) and started their career in finance in 2018. William had worked at 9 firms and has passed the Series 66, SIE and Series 7 exams.
Question & Answer
Aliases
Other business activities
CRS (Client Relationship Summary)
The CRS(Customer Relationship Summary) document is not provided.
Certified licenses
Experience
October 23, 2025 - Present
Office #1: 333 West Chestnut Street, Hinsdale, IL 60521
August 7, 2023 - September 17, 2025
ALLIANCEBERNSTEIN L.P.
August 7, 2023 - September 17, 2025
SANFORD C. BERNSTEIN & CO., LLC
February 7, 2022 - April 13, 2023
KEEBECK WEALTH MANAGEMENT
January 4, 2021 - December 15, 2021
GOLDMAN SACHS & CO. LLC
August 30, 2019 - December 15, 2021
GOLDMAN SACHS WEALTH SERVICES, L.P.
August 30, 2019 - January 4, 2021
MERCER ALLIED COMPANY, L.P.
August 7, 2018 - March 29, 2019
DIMENSIONAL FUND ADVISORS LP
June 11, 2018 - March 29, 2019
DFA SECURITIES LLC
State Registrations and Notice Filings
Listed states reflect where the advisor is authorized to serve clients under state regulations.
Highlighted states indicate IAR registrations
(10/23/2025)
Exams
Current firm
No current employment
Red Flags
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