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WB

William Brackenheimer

VISTINA ADVISORY LLC
GREENWICH, CT 06830
Some features on this profile are disabled
CRD#: 5353370
WB

Professional summary

William Brackenheimer, who also goes by Vladimir Serdyukov, is a registered financial professional currently at VISTINA ADVISORY LLC located in Greenwich, Connecticut and VISTINA STRUCTURED CREDIT ADVISORY LLC located in Greenwich, Connecticut.

William is registered as a RR (Registered Representative) and started their career in finance in 2008. William has worked at 5 firms and has passed the Series 63, Series 79TO, SIE, Series 7 and Series 24 exams.

Question & Answer

Are you a "fiduciary"?
No

Aliases

Vladimir Serdyukov

Other business activities

Outside business activity is any business or activity undertaken by an advisor that is outside the scope of their relationship with their firm (e.g., consulting services, real estate, freelance work, teaching, etc.). Investors should stay informed about these activities to ensure no conflicts of interest.
The advisor shows no other business activity.

Blog Corner

CRS (Client Relationship Summary) - BD

Click below to view William Brackenheimer's CRS (Customer Relationship Summary).

Certified licenses

Advisors may have various certifications and credentials from different organizations. AdvisorCheck highlights these seven certifications - AIF®, CFP®, ChFC®, CFA, CLU®, CIMA®, CPWA®
None

Experience

Current

January 13, 2026 - Present

VISTINA ADVISORY LLC

Office #1: 81 Holly Hill Lane, Greenwich, CT 06830
BD
CRD#: 337987
GREENWICH, CT
Current

January 13, 2026 - Present

VISTINA STRUCTURED CREDIT ADVISORY LLC

Office #1: 81 Holly Hill Lane, Greenwich, CT 06830
BD
CRD#: 337986
GREENWICH, CT
Past

September 29, 2025 - January 13, 2026

HORANG SECURITIES, LLC

BD
CRD#: 6004
NEW YORK, NY
Past

May 31, 2011 - September 30, 2025

GUGGENHEIM SECURITIES, LLC

BD
CRD#: 40638
CHICAGO, IL
Past

September 30, 2008 - June 2, 2011

CITIGROUP GLOBAL MARKETS INC.

BD
CRD#: 7059
NEW YORK, NY

State Registrations and Notice Filings

Listed states reflect where the advisor is authorized to serve clients under state regulations.

RR
indicates the advisor is registered as a Registered Representative in this state, allowing them to offer securities such as stocks, bonds, and mutual funds through a broker-dealer.

Visual representation of state registrations

RR
Connecticut
(1/13/2026)
RR
Maine
(1/13/2026)
RR
New York
(1/13/2026)
RR
Vermont
(3/4/2026)

Exams

State Security Law Exam
RR
Series 63
Date: 10/1/2008
Uniform Securities Agent State Law Examination
General Industry/Product Exam
RR
Series 79TO
Date: 1/2/2023
Investment Banking Registered Representative Examination
General Industry/Product Exam
RR
SIE
Date: 10/1/2018
Securities Industry Essentials Examination
General Industry/Product Exam
RR
Series 7
Date: 9/29/2008
General Securities Representative Examination
Principal/Supervisory Exam
RR
Series 24
Date: 1/3/2025
General Securities Principal Examination
SRO Registrations
RR
FINRA

Current Firm

VS
VISTINA STRUCTURED CREDIT ADVISORY LLC
VISTINA STRUCTURED CREDIT ADVISORY LLC | VISTINA STRUCTURED CREDIT ADVISORY, LLC

CRD#: 337986 / SEC#: , 8-71409

BD
Broker-Dealer Firm Regulated by FINRA (Boston district office)
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Contact information

Main Address
81 Holly Hill Lane, Greenwich, CT 06830
Mailing Address
81 Holly Hill Lane, Greenwich, CT 06830
Phone number
(214) 432-5574
Established
Delaware since 07/23/2025
Firm type
Limited Liability Company
Fiscal year end
December
Firm Size
Small
# of Employees

FINRA licenses (3 States and Territories)

Blank US states mapAlaskaHawaiiAlabamaArkansasArizonaCaliforniaColoradoConnecticutDelawareFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWisconsinWest VirginiaWyoming

Documents

Direct owners and executive officers

NamePositionCRD#
VISTINA STRUCTURED CREDIT ADVISORY HOLDINGS LLCMANAGING MEMBER
FORTINO, ANGELINAFINOP, PFO, POO6869135
MARLIN, ROSSCHIEF COMPLIANCE OFFICER6931826
WALTERS, CHRISTOPHER RYANPRESIDENT5826991

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.

Company Information

VISTINA STRUCTURED CREDIT ADVISORY LLC

CRD#: 337986Greenwich, CT 06830

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