John M. Duffy
Professional summary
John Maguire Duffy, who also goes by John M Duffy, John Michael Duffy, is a registered financial professional currently at PIPER SANDLER & CO. located in New York, New York.
John is registered as a RR (Registered Representative) and started their career in finance in 1993. John has worked at 6 firms and has passed the Series 63, SIE, Series 7 and Series 24 exams.
Question & Answer
Aliases
Other business activities
CRS (Client Relationship Summary) - BD
Click below to view John Maguire Duffy's CRS (Customer Relationship Summary).
Certified licenses
Experience
February 21, 2023 - Present
PIPER SANDLER & CO.
Office #1: 1251 Avenue Of The Americas 6th Floor, New York, NY, 10020November 28, 2014 - February 15, 2023
DAIWA CAPITAL MARKETS AMERICA INC.
April 22, 2013 - October 10, 2014
SANTANDER US CAPITAL MARKETS LLC
September 19, 2002 - February 5, 2013
DEUTSCHE BANK SECURITIES INC.
May 21, 2001 - August 23, 2002
J.P. MORGAN SECURITIES INC.
January 26, 1993 - October 18, 2000
PERSHING LLC
Primary Firm SEC Registration

PIPER SANDLER & CO.
CRD#: 665 / SEC#: 801-108049, 8-15204
State Registrations and Notice Filings
Listed states reflect where the advisor is authorized to serve clients under state regulations.
Visual representation of state registrations
(3/29/2023)
(2/24/2023)
(1/2/2024)
(1/2/2024)
(11/20/2023)
(8/5/2024)
(2/24/2023)
(1/2/2024)
(1/2/2024)
(4/9/2025)
(2/21/2023)
(11/1/2023)
(5/8/2025)
(6/3/2024)
(8/5/2024)
(1/2/2024)
(1/2/2024)
(5/16/2025)
(5/7/2025)
Exams
Cboe BYX Exchange, Inc.
Cboe BZX Exchange, Inc.
Cboe EDGA Exchange, Inc.
Cboe EDGX Exchange, Inc.
FINRA
Investors' Exchange LLC
NYSE American LLC
NYSE Arca, Inc.
Nasdaq ISE, LLC
Nasdaq Stock Market
New York Stock Exchange
Current Firm

PIPER SANDLER & CO.
CRD#: 665 / SEC#: 801-108049, 8-15204
Contact information
SEC notice filing (9 States and Territories)
FINRA licenses (53 States and Territories)
Direct owners and executive officers
| Name | Position | CRD# |
|---|---|---|
| PIPER SANDLER COMPANIES | PARENT | |
| ABRAHAM, CHAD RICHARD | CHAIRMAN, CEO; BOARD MEMBER | 2190836 |
| CLUNE, KATHERINE PATRICIA | CFO; BOARD MEMBER | 4624219 |
| COX, MICHAEL EDWARD | CO-HEAD OF EQUITIES; BOARD MEMBER | 4248868 |
| DILLAHUNT, MICHAEL RAY | CO-HEAD INV BKG & CAP MKTS; BOARD MEMBER | 3056486 |
| DOYLE, JONATHAN JAY | HEAD OF FINANCIAL SERVICES GROUP | 2108121 |
| GEELAN, JOHN WILLIAM JR. | CHIEF LEGAL OFFICER | 4905460 |
| GERBER, JEREMY JOSEPH | CO HEAD OF PUBLIC FINANCE; BOARD MEMBER | 5071604 |
| LARSEN, BRIDGET TERE | CHIEF COMPLIANCE OFFICER | 6643130 |
| SCHONEMAN, DEBBRA LYNN | PRESIDENT; BOARD MEMBER | 1980635 |
Regulatory assets under management
| Total Number of Accounts | 1 |
| AUM (Assets Under Management) | $ 1,985,004,532 |
Disclosures
| Regulatory Event | 141 |
| Civil Event | 1 |
| Arbitration | 50 |
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.
