GAGNON ADVISORS LLC
Q3 2026 Form 13-F
NEW YORK, NEW YORK
CIK 0001599466
· CRD 161697
· SEC-registered investment adviser
$182.1M Reported Value Total
GAGNON ADVISORS reports 3 total accounts under management (AUM). There are 3 discretionary accounts valued at $187,307,870, and 0 non-discretionary accounts.
Source: Form ADV filed * Note that certain holdings are exempt from Form 13-F reporting, so the AUM totals may be greater than the Form 13-F total.
SEC Registered
Discretionary Manager
Private funds (Form ADV)
4 funds
· $307.0M gross asset value
Hedge Fund: $307.0M
Source: Form ADV filed 2026-08-12
Reported value
$182.1M
Quarter over quarter
+20.3%
Holdings
24
Top-10 concentration
63.2%
Key People
Form ADV owners & control persons
Neil Joseph Gagnon
CHIEF EXECUTIVE OFFICER
Maureen Oneill Drew
MEMBER
Brian Joseph Gagnon
MEMBER
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Q3 2026 13F record
Q3 2026 13F filing summary
| Period of report | September 30, 2026 |
|---|---|
| Filed | November 05, 2026 |
| Form | 13F-HR |
| Reported value | $182.1M |
| Positions | 24 |
| Change in reported value | +20.5% |
| New positions | 4 |
| Exited positions | 2 |
| Position turnover | 23.1% |
| Top-10 concentration | 63.2% |
13F filings by quarter
| Quarter | Positions | Value |
|---|---|---|
|
Q3 2026 13F
Filed Nov 5, 2026
|
24 | $182.1M |
|
Q2 2026 13F
Filed Aug 5, 2026
|
22 | $151.1M |
|
Q1 2026 13F
Filed Apr 22, 2026
|
22 | $135.9M |
|
Q4 2025 13F
Filed Feb 13, 2026
|
23 | $157.5M |
|
Q3 2025 13F
Filed Nov 3, 2025
|
24 | $162.0M |
|
Q2 2025 13F
Filed Jul 23, 2025
|
24 | $148.8M |
|
Q1 2025 13F
Filed May 12, 2025
|
28 | $141.8M |
|
Q4 2024 13F
Filed Jan 24, 2025
|
26 | $156.2M |
|
Q3 2024 13F
Filed Nov 12, 2024
|
27 | $154.8M |
|
Q2 2024 13F
Filed Aug 14, 2024
|
27 | $131.3M |
|
Q1 2024 13F
Filed May 13, 2024
|
27 | $115.3M |
|
Q4 2023 13F
Filed Feb 14, 2024
|
26 | $114.5M |
|
Q3 2023 13F
Filed Nov 14, 2023
|
28 | $119.5M |
|
Q2 2023 13F
Filed Aug 8, 2023
|
29 | $149.4M |
|
Q1 2023 13F
Filed Apr 10, 2023
|
28 | $149.0M |
|
Q4 2022 13F
Filed Feb 7, 2023
|
29 | $148.2M |
|
Q3 2022 13F
Filed Nov 14, 2022
|
32 | $154.4M |
|
Q2 2022 13F
Filed Aug 1, 2022
|
33 | $165.1M |
|
Q1 2022 13F
Filed May 9, 2022
|
33 | $217.1M |
|
Q4 2021 13F
Filed Feb 8, 2022
|
34 | $251.7M |
32 earlier quarters on file — choose one from the quarter menu above.
Top 20 holdings · Q3 2026
| # | Holding | Reported value | % of portfolio |
|---|---|---|---|
| 1 | CDNA CAREDX INC | $18.6M | 10.24% |
| 2 | EPD ENTERPRISE PRODS PARTNERS L P | $12.1M | 6.65% |
| 3 | WGS GENEDX HOLDINGS CORP | $11.8M | 6.47% |
| 4 | FIVN FIVE9 INC | $11.4M | 6.28% |
| 5 | HNGE HINGE HEALTH INC | $11.0M | 6.05% |
| 6 | EQIX EQUINIX INC | $10.8M | 5.95% |
| 7 | BLFS BIOLIFE SOLUTIONS INC | $10.7M | 5.85% |
| 8 | FRSH FRESHWORKS INC | $9.9M | 5.45% |
| 9 | AMRC AMERESCO INC | $9.8M | 5.38% |
| 10 | PCRX PACIRA BIOSCIENCES INC | $8.8M | 4.85% |
| 11 | AMPL AMPLITUDE INC | $8.8M | 4.83% |
| 12 | NVGS NAVIGATOR HLDGS LTD | $7.6M | 4.18% |
| 13 | BL BLACKLINE INC | $6.8M | 3.76% |
| 14 | TMCI TREACE MED CONCEPTS INC | $6.8M | 3.74% |
| 15 | DV DOUBLEVERIFY HLDGS INC | $5.9M | 3.25% |
| 16 | PROF PROFOUND MED CORP | $5.6M | 3.07% |
| 17 | OSUR OraSure Technologies Inc | $5.0M | 2.77% |
| 18 | QDEL QUIDELORTHO CORP | $4.6M | 2.5% |
| 19 | VERX VERTEX INC | $4.3M | 2.34% |
| 20 | BKD BROOKDALE SR LIVING INC | $4.0M | 2.19% |
Values as reported on the Q3 2026 Form 13F. Every position is in the holdings table below.