Gagnon Securities, Llc
- Regulatory AUM
- $530M
- Discretionary
- $530M
- Clients
- 1,202
- Avg AUM / client
- $441K
- Accounts
- 1,202
- Employees
- 19
AUM over time
Reported AUM from Form ADV filings, plotted by filing date · as of May 04, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Individuals (non-high net worth) | 1,025 | $248M | 46.7% |
| High net worth individuals | 33 | $224M | 42.3% |
| Corporations and other businesses | 144 | $58.0M | 10.9% |
People (20)
roster as of Jul 20, 2026| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Matthew Howard Jampole | Member | Dec 2004 (22y) | Less than 5% | |
| Henry Carl Beinstein | Member | Apr 2005 (21y) | Less than 5% | |
| Jonathan Williams Robohm | Member | Apr 2005 (21y) | Less than 5% | |
| Lisa Catherine Ferrante | Member | Feb 2006 (21y) | Less than 5% | |
| Alison Anne Tranchida | Member | Mar 2007 (19y) | Less than 5% | |
| Willis Gitt Taylor | Member | May 2008 (18y) | 5% – 10% | |
| Marianne D'alessandro | Member | Mar 2011 (15y) | Less than 5% | |
| Simmons, Michelle | Member | Oct 2014 (12y) | Less than 5% | |
| Adrienne Michelle Garofalo | Member | Mar 2015 (11y) | Less than 5% | |
| Cynthia Andrea Roberts | Member | Jan 2018 (9y) | Less than 5% | |
| Sarah G Jilla | Member | Jan 2018 (9y) | Less than 5% | |
| James Matthew Cappello | Member | Jan 2021 (6y) | Less than 5% | |
| Brian Joseph Gagnon | Registered representative | Jul 2021 (5y) | ||
| Dwight Eisenhower Lee | Registered representative | Jul 2021 (5y) | ||
| Gabrielle Rosenfeld | Registered representative | Jul 2021 (5y) | ||
| Maureen Oneill Drew | Registered representative | Jul 2021 (5y) | ||
| James Colby | Registered representative | Nov 2021 (5y) | ||
| Jessica Rose Vingiello | Registered representative | Nov 2021 (5y) | ||
| Neil Joseph Gagnon | Registered representative | Nov 2021 (5y) | ||
| Edward Francis Alf | Registered representative | Jan 2026 (1y) |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Gagnon, Neil Joseph | Manager/Ceo | Oct 1999 | A | 50% – 75% |
| Gagnon, Brian Joseph | Member | Jan 2002 | A | 5% – 10% |
| Drew, Maureen Oneill | Member | Jan 2002 | A | 5% – 10% |
| Lee, Dwight Eisenhower | Member | Aug 2005 | A | Less than 5% |
Undisclosed: 0% – 35% of the firm is not attributable from the filed Schedule A bands.
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 05/04/2026 | 1.34 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
Allegations: ON SEPTEMBER 10, 2014 NEIL GAGNON CONSENTED TO THE ENTRY OF AN ORDER INSTITUTING ADMINISTRATIVE AND CEASE-AND-DESIST PROCEEDINGS ("ORDER") BY THE U.S. SECURITIES AND EXCHANGE COMMISSION (THE "SEC"). IN THE ORDER, THE SEC FOUND THAT MR. GAGNON FAILED TO TIMELY FILE BENEFICIAL OWNERSHIP REPORTS REQUIRED UNDER SECTION 13(D) AND SECTION 16(A) OF THE SECURITIES EXCHANGE ACT OF 1934 ("EXCHANGE ACT"). SPECIFICALLY, THE SEC ALLEGED THAT MR. GAGNON FAILED TO FILED TIMELY AMENDMENTS TO ITS SCHEDULES 13G'S AND CONTINUED TO FILE AS A PASSIVE INVESTOR ON A SCHEDULE 13G, DESPITE OWNING IN EXCESS OF 20% OF THE OUTSTANDING VOTING SECURITIES OF A PARTICULAR ISSUER, THEREBY REQUIRING A SCHEDULE 13D FILING AND SUBSEQUENT AMENDMENTS. FURTHER, MR. GAGNON FAILED TO MAKE TIMELY REPORTS ON FORMS 4 AND 5 TO IN ACCORDANCE WITH SECTION 16(A) OF THE EXCHANGE ACT. WITHOUT ADMITTING OR DENYING THE SEC'S FINDINGS, MR. GAGNON AGREED TO CEASE AND DESIST FROM FUTURE VIOLATIONS OF SECTIONS 13(D) AND 16(A) OF THE EXCHANGE ACT AND RULES 13D-1, 13D-2 AND 16A-3 THEREUNDER, AND TO PAY A CIVIL MONETARY PENALTY OF $75,000. Status: Final Summary: WITHOUT ADMITTING OR DENYING THE VIOLATIONS, NEIL GAGNON CONSENTED TO THE ENTRY OF AN SEC ORDER FINDING THAT MR. GAGNON FAILED TO MAKE TIMELY FILINGS IN ACCORDANCE WITH SECTIONS 13(D) AND 16(A) OF THE SECURITIES EXCHANGE ACT OF 1934. NEIL GAGNON SUBMITTED AN OFFER OF SETTLEMENT WHICH WAS ACCEPTED BY THE SEC. WITHOUT ADMITTING OR DENYING THE VIOLATIONS, MR. GAGNON WILL PAY A CIVIL MONETARY PENALTY OF $75,000. MR. GAGNON ALSO AGREED TO CEASE AND DESIST FROM COMMITTING OR CAUSING ANY VIOLATIONS OF SECTIONS 13(D) AND 16(A) OF THE SECURITIES EXCHANGE ACT OF 1934 AND RULES 13D-1, 13D-2 AND 16A-3 THEREUNDER.
Disclosure text reproduced verbatim from the firm's own Form ADV filings.
How they charge
- • Percentage of assets under management
- • Commissions
Services
- • Portfolio management for individuals/small businesses
Custody
Reported custodians
- National Financial Services (Fidelity) $530M (100% of AUM) May 2026
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports it does not have custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: May 04, 2026.
View current Form ADV (SEC/IAPD) ↗