William Brackenheimer
Professional summary
William Brackenheimer, who also goes by Vladimir Serdyukov, is a registered financial professional currently at HORANG SECURITIES, LLC located in New York, New York.
William is registered as a RR (Registered Representative) and started their career in finance in 2008. William has worked at 3 firms and has passed the Series 63, Series 79TO, SIE, Series 7 and Series 24 exams.
Question & Answer
Aliases
Other business activities
CRS (Client Relationship Summary) - BD
Click below to view William Brackenheimer's CRS (Customer Relationship Summary).
Certified licenses
Experience
September 29, 2025 - Present
HORANG SECURITIES, LLC
Office #1: 27 W 72nd St #810, New York, NY 10023May 31, 2011 - September 30, 2025
GUGGENHEIM SECURITIES, LLC
September 30, 2008 - June 2, 2011
CITIGROUP GLOBAL MARKETS INC.
State Registrations and Notice Filings
Listed states reflect where the advisor is authorized to serve clients under state regulations.
Visual representation of state registrations
(9/29/2025)
(9/29/2025)
Exams
Series 79TO
Date: 1/2/2023
Investment Banking Registered Representative ExaminationFINRA
Current Firm
HORANG SECURITIES, LLC
CRD#: 6004 / SEC#: , 8-16608
Contact information
FINRA licenses (6 States and Territories)
Documents
Disclosures
| Regulatory Event | 2 |
Red Flags
Disclosures can be potential red flags, including customer disputes, regulatory fines, employer terminations, bankruptcies, judgments, liens, or certain criminal activities.
Check for any disclosures as part of your thorough research when choosing an advisor.
