William R. Tappen
Professional summary
William Robert Tappen, who also goes by Will Tappen, is a registered financial professional currently at CITADEL SECURITIES INSTITUTIONAL LLC located in New York, New York and CITADEL SECURITIES LLC located in New York, New York.
William is registered as a RR (Registered Representative) and started their career in finance in 2023. William has worked at 3 firms and has passed the Series 63, Series 7TO and SIE exams.
Question & Answer
Aliases
Other business activities
CRS (Client Relationship Summary) - BD
Click below to view William Robert Tappen's CRS (Customer Relationship Summary).
Certified licenses
Experience
November 29, 2024 - Present
CITADEL SECURITIES INSTITUTIONAL LLC
Office #1: 425 Park Avenue, New York, NY 10022November 29, 2024 - Present
CITADEL SECURITIES LLC
Office #1: 425 Park Avenue, New York, NY 10022July 14, 2023 - November 15, 2024
NOMURA SECURITIES INTERNATIONAL, 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
(8/25/2025)
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(7/10/2025)
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(8/27/2025)
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Exams
Series 7TO
Date: 7/14/2023
General Securities Representative ExaminationBOX Exchange LLC
Cboe BYX Exchange, Inc.
Cboe BZX Exchange, Inc.
Cboe C2 Exchange, Inc.
Cboe EDGA Exchange, Inc.
Cboe EDGX Exchange, Inc.
Cboe Exchange, Inc.
FINRA
Investors' Exchange LLC
Long-Term Stock Exchange, Inc.
MEMX LLC
MIAX Emerald, LLC
MIAX PEARL, LLC
MIAX Sapphire
Miami International Securities Exchange, LLC
NYSE American LLC
NYSE Arca, Inc.
NYSE National, Inc.
NYSE Texas, Inc.
Nasdaq BX, Inc.
Nasdaq GEMX, LLC
Nasdaq ISE, LLC
Nasdaq MRX, LLC
Nasdaq PHLX LLC
Nasdaq Stock Market
New York Stock Exchange
Current Firm
CITADEL SECURITIES LLC
CRD#: 116797 / SEC#: , 8-53574
Contact information
FINRA licenses (15 States and Territories)
Documents
Disclosures
| Regulatory Event | 75 |
| Arbitration | 1 |
Red Flags
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