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| Gagnon Securities LLC
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| CRD # | 103727 |
| SEC # | 801-64836 |
| CIK # | 0001125725 |
| AUM | 529.7 M (2026-05-04) |
| Employees | 19 (53% Investors, 100% Brokers) |
| Fees | |
| Minimum | |
| Phone | 212-554-5000 |
| Address | 1370 6th Avenue New York, NY 10019 |
| Source | [IAPD] [EDGAR] [Website] [LinkedIn] |
| Total AUM ($M) |
|---|
| In the News | |
|---|---|
| Thu, 15 Oct 2026 | Form X-17A-5 GAGNON SECURITIES, LLC For: Dec 31 — StreetInsider |
| CIK | Period |
|---|---|
| 0001125725 |
| Sector | Form 13F Holdings | Value ($M) | |
|---|---|---|---|
| Ensign Group Inc | 36.2 | ||
| CareDx Inc | 30.6 | ||
| Ameresco Inc | 21.4 | ||
| CM Life Sciences Inc | 19.5 | ||
| Enterprise Products Partners L P | 19.5 | ||
| Navigator Holdings Ltd | 17.1 | ||
| Equinix Inc | 16.6 | ||
| Generac Holdings Inc | 14.6 | ||
| Intuitive Surgical Inc | 14.6 | ||
| Pacira Pharmaceuticals Inc | 14.0 | ||
| Freshworks Inc | 13.9 | ||
| Carmax Inc | 12.9 | ||
| Profound Medical Corp | 12.6 | ||
| Cheesecake Factory Inc | 12.3 | ||
| Blackline Inc | 11.0 | ||
| Biolife Solutions Inc | 10.2 | ||
| Five9 Inc | 9.4 | ||
| Cargurus Inc | 9.2 | ||
| Amplitude Inc | 7.2 | ||
| Treace Medical Concepts Inc | 7.0 | ||
| Quidelortho Corp | 6.6 | ||
| Aspen Aerogels Inc | 6.4 | ||
| Proto Labs Inc | 6.3 | ||
| Celcuity Inc | 6.1 | ||
| Marinemax Inc | 6.0 | ||
| Vertex Inc | 5.6 | ||
| Orasure Technologies Inc | 5.1 | ||
| Chipotle Mexican Grill Inc | 5.1 | ||
| Caretrust REIT Inc | 4.9 | ||
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| AUM Breakdown | Accounts | AUM ($M) |
|---|---|---|
| By Client Type | ||
| (a) Individuals (other than high net worth individuals) | 1,025 | 247.6 |
| (b) Individuals (high net worth individuals) | 33 | 224.2 |
| (c) Banking or thrift institutions | 0 | 0.0 |
| (d) Investment companies | 0 | 0.0 |
| (e) Business development companies | 0 | 0.0 |
| (f) Pooled investment vehicles | 0 | 0.0 |
| (g) Pension and profit sharing plans | 0 | 0.0 |
| (h) Charitable organizations | 0 | 0.0 |
| (i) State or municipal government entities | 0 | 0.0 |
| (j) Other investment advisers | 0 | 0.0 |
| (k) Insurance companies | 0 | 0.0 |
| (l) Sovereign wealth funds and foreign official institutions | 0 | 0.0 |
| (m) Corporations or other businesses not listed above | 144 | 58.0 |
| (n) Other | 0 | 0.0 |
| Total | 1,202 | 529.7 |
| By Discretionary | ||
| Discretionary | 1,202 | 529.7 |
| Non-Discretionary | 0 | 0.0 |
| Total | 1,202 | 529.7 |
| By Non-United States Persons | ||
| Non-United States Persons | 0.8 | |
| United States Persons | 528.9 | |
| Total | 1,202 | 529.7 |
| EDGAR Form | CIK | 2011 - 2026 |
|---|---|---|
| 13F-HR | [0001125725] | |
| SC 13D | [0001125725] | |
| SC 13G | [0001125725] |
| Firm Profile (Form ADV) | |
|---|---|
| Discretionary AUM | $0.1B |
| Clients | 1 |
| Serves | Retail |
| Related Firms | State | AUM |
|---|---|---|
|
Gagnon Securities LLC
✚
|
NY | 529.7 M |
|
Gagnon Advisors LLC
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|
NY | 187.3 M |
| Comparable Firms | State | AUM |
|---|---|---|
|
Robertson Investment Management
✚
|
TX | 534.1 M |
|
Jacksonville Wealth Management LLC
✚
|
FL | 533.5 M |
|
DST Wealth Management LLC
✚
|
CA | 532.1 M |
|
Pension & Wealth Management Advisors Inc
✚
|
MA | 529.8 M |
|
Denver Wealth Management Inc
✚
|
CO | 529.8 M |
|
Sa Mason LLC
✚
|
MI | 528.7 M |
|
Peterson Wealth Services Inc
✚
|
UT | 528.5 M |
|
Noble Family Wealth LLC
✚
|
FL | 527.5 M |
|
Compass Financial Advisory Services LLC
✚
|
FL | 527.2 M |
|
Core Planning LLC
✚
|
MO | 525.0 M |