Gagnon Securities, LLC

CRD 103727 · New York, NY · $529.7M AUM

RIA

Firm record

As recorded in SEC IAPD

Firm CRD: 103727
SEC number: 801-64836
Firm type: RIA
Assets under management: $529.7M as of May 4, 2026
Website: www.gagnonsec.com ↗
Phone: 212-554-5000
Address: 1370 6th Avenue, New York, NY, 10019

Advisors at this firm

19 in our index · page 1 of 1

Edward Francis AlfCRD 8152346 · New York, NY

IA RegisteredBroker
Henry Carl BeinsteinCRD 4584546 · New York, NY

IA RegisteredBroker
James Matthew CappelloCRD 4124259 · New York, NY

IA RegisteredBroker
James ColbyCRD 6321555 · New York, NY

IA RegisteredBroker
Marianne D'alessandroCRD 5019195 · New York, NY

IA RegisteredBroker
Maureen Oneill DrewCRD 2702645 · New York, NY

IA RegisteredBroker
Lisa Catherine FerranteCRD 3135415 · New York, NY

IA RegisteredBroker
Brian Joseph GagnonCRD 1809872 · New York, NY

IA RegisteredBroker
Neil Joseph GagnonCRD 216440 · New York, NY

IA RegisteredBroker

Disclosure event(s) on record
Adrienne Michelle GarofaloCRD 2383265 · New York, NY

IA RegisteredBroker
Matthew Howard JampoleCRD 3272478 · New York, NY

IA RegisteredBroker
Sarah G JillaCRD 6239295 · New York, NY

IA RegisteredBroker
Dwight Eisenhower LeeCRD 305203 · New York, NY

IA RegisteredBroker
Cynthia Andrea RobertsCRD 2818779 · New York, NY

IA RegisteredBroker
Jonathan Williams RobohmCRD 2933186 · New York, NY

IA RegisteredBroker
Gabrielle RosenfeldCRD 7157921 · New York, NY

IA RegisteredBroker
Willis Gitt TaylorCRD 4321965 · New York, NY

IA RegisteredBroker
Alison Anne TranchidaCRD 4345426 · New York, NY

IA RegisteredBroker
Jessica Rose VingielloCRD 7178104 · New York, NY

IA RegisteredBroker

Source & corrections

Where this page comes from

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Data compiled Aug 20, 2026. Source: ADV_BULK. Your use of BrokerCheck data reproduced here is subject to FINRA's Terms of Use.

Preview release — partial coverage. This is a public-records lookup tool, not investment advice, not a recommendation, and not an endorsement of any advisor. Registration status shown here is a copy of a government record and may be out of date; always confirm against SEC IAPD and FINRA BrokerCheck before acting.