DOSSIER · 13F-HR · Q1 2026

Gagnon Advisors, LLC

$136M in tracked AUM across 22 positions as of Q1 2026.

GA
CIK 0001599466 · last filed Mar 31, 2026
Total AUM
$136M
as of Q1 2026
Holdings
22
positions
Whale Score
58
58
tracked
Activity
no data
changes this Q
AI Analysis · Q1 2026
Comprehensive Analysis of Gagnon Advisors, LLC SEC 13F Filing
Portfolio Overview

For the reporting period ending September 30, 2025, Gagnon Advisors, LLC managed a total portfolio value of approximately $106.72 million across 17 holdings. This represents a significant decrease in assets under management (AUM) of -28.3% compared to the previous quarter's value of $148.81 million. The reduction in portfolio value is likely attributable to a combination of market depreciation and ...

The portfolio exhibits a highly concentrated strategy. The top ten positions account for approximately 84.3% of the total portfolio value, with the largest single holding, GeneDx Holdings (WGS), constituting 12.83%. This suggests a high-conviction approach where capital is allocated selectively to a limited number of names. The firm's strategy appears to be mid-cap focused, with significant exposure to growth-oriented sectors such as technology and healthcare.

Key Holdings

The portfolio is anchored by WGS (GENEDX HOLDINGS CORP), which is the largest position at $13.69 million (12.83% allocation). This heavy weighting indicates strong conviction in the healthcare diagnostics or genetics space. The second and third largest holdings, Air Lease Corp ($12.51M, 11.72%) and Equinix Inc (EQIX) ($8.39M, 7.86%), provide diversification into industrial leasing and data center infrastructure, respectively.

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
EPD
ENTERPRISE PRODS PARTNERS L P
$13M340K9.5%
02
AMRC
AMERESCO INC
$12M473K8.9%
03
EQIX
EQUINIX INC
$11M11K7.7%
04
Y62132108
NAVIGATOR HLDGS LTD
$10M540K7.7%
05
SGOV
ISHARES TR
$10M96K7.1%
06
WGS
GENEDX HOLDINGS CORP
$10M148K7.0%
07
CDNA
CAREDX INC
$9M533K6.8%
08
PCRX
PACIRA BIOSCIENCES INC
$8M353K5.9%
09
PROF
PROFOUND MED CORP
$6M962K4.6%
10
FRSH
FRESHWORKS INC
$6M776K4.6%

Filing history

2026Q1Mar 31
$136M 13.7%
22 positionsView →
2025Q4Dec 31
$158M 47.6%
23 positionsView →
2025Q3Sep 30
$107M 28.3%
17 positionsView →
2025Q2Jun 30
$149M 38.6%
24 positionsLocked
2025Q1Mar 31
$107M 31.3%
22 positionsLocked
2024Q4Dec 31
$156M 0.9%
26 positionsLocked
2024Q3Sep 30
$155M 17.9%
27 positionsLocked
2024Q2Jun 30
$131M 14.0%
27 positionsLocked
2024Q1Mar 31
$115M 0.7%
27 positionsLocked
2023Q4Dec 31
$114M 4.2%
26 positionsLocked
2023Q3Sep 30
$120M 20.0%
28 positionsLocked
2023Q2Jun 30
$149M 0.3%
29 positionsLocked
Showing 12 of 47