SEC 13F Intelligence

Managers / Q2 2025 · view latest →

Gagnon Advisors, LLC

CIK 0001599466 · 1370 AVENUE OF THE AMERICAS, 26TH FLOOR, NEW YORK, NY, 10019 · 212-554-5050

Reported Value
$149M
Q2 2025
Positions
24
Filings on Record
32
2019–present window
Filed
Jul 23, 2025
original filing

Summary

Gagnon Advisors, LLC reported $149M in U.S.-listed holdings across 24 positions for Q2 2025.

Its largest position, WGS, represents 7.9% of the portfolio.

Compared with Q1 2025, the fund opened 1 new position and exited 5.

Portfolio Metrics

Turnover
+13.2%
vs prior filed quarter
Top-10 Concentration
+61.6%
share of reported value
Largest Position
+7.9%
Genedx
New / Exited
1 / 5
positions this quarter

Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded, with multiple share classes and repeated sub-manager rows for the same issuer combined into one position — the same rule the holdings table uses by default. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.

Reported Value by Quarter

13F Reported Value
Q4 ’18: $142MQ4 ’18Q1 ’19: $175MQ2 ’19: $175MQ3 ’19: $161MQ4 ’19: $178MQ4 ’19Q1 ’20: $107MQ2 ’20: $139MQ3 ’20: $163MQ4 ’20: $222MQ4 ’20Q1 ’21: $474MQ2 ’21: $263MQ3 ’21: $252MQ4 ’21: $252MQ4 ’21Q1 ’22: $217MQ2 ’22: $165MQ3 ’22: $154MQ4 ’22: $148MQ4 ’22Q1 ’23: $149MQ2 ’23: $149MQ3 ’23: $120MQ4 ’23: $114MQ4 ’23Q1 ’24: $115MQ2 ’24: $131MQ3 ’24: $155MQ4 ’24: $156MQ4 ’24Q1 ’25: $142MQ2 ’25: $149MQ3 ’25: $162MQ4 ’25: $158MQ4 ’25Q1 ’26: $136Mfilingsflow.com

Portfolio Composition

By security type
Common Stock: 86.5%MLP: 7.1%REIT: 5.7%Other: 0.7%
  • Common Stock · 86.5% · $129M
  • MLP · 7.1% · $11M
  • REIT · 5.7% · $9M
  • Other · 0.7% · $1M

Quarter-over-Quarter Changes full breakdown →

vs Q1 2025 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
ASPNASPEN AEROGELS INCNEW+565.6K565.6K+$3M$3M
DVDOUBLEVERIFY HLDGS INCADDED+245.2K312.9K+$4M$5M
VEREN INCSOLD OUT−890.7K0−$6M$0
E2OPEN PARENT HOLDINGS INCSOLD OUT−2.34M0−$5M$0
MXCTMAXCYTE INCSOLD OUT−934.2K0−$3M$0
IONQIONQ INCSOLD OUT−105.6K0−$2M$0
NCNONCINO INCSOLD OUT−77.5K0−$2M$0
CNFINANCE HLDGS LTDADDED+784.7K1.57M+$408,053$1M

Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.

Holdings — Q2 2025

24 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1WGSGENEDX HOLDINGS CORPhistory →COM CL A7.88%$12M127.1K
2PSIXPOWER SOLUTIONS INTL INChistory →COM7.84%$12M180.4K
3ALAIR LEASE CORPhistory →CL A7.72%$11M196.5K
4EPDENTERPRISE PRODS PARTNERS L Phistory →COM7.08%$11M339.9K
5CDNACAREDX INChistory →COM5.96%$9M454.2K
6EQIXEQUINIX INChistory →COM5.73%$9M10.7K
7BLBLACKLINE INChistory →COM4.95%$7M130.1K
8NVGSNAVIGATOR HLDGS LTDhistory →SHS4.92%$7M517.1K
9AMRCAMERESCO INChistory →CLA4.83%$7M472.8K
10FRSHFRESHWORKS INChistory →CLASS A COM4.71%$7M470.4K
11BLFSBIOLIFE SOLUTIONS INChistory →COM NEW3.97%$6M274.2K
12VERXVERTEX INChistory →CL A3.84%$6M161.8K
13PROFPROFOUND MED CORPhistory →COM NEW3.56%$5M896.7K
14PCRXPACIRA BIOSCIENCES INChistory →COM3.43%$5M213.4K
15TMCITREACE MED CONCEPTS INChistory →COM3.28%$5M830.3K
16DVDOUBLEVERIFY HLDGS INChistory →COM3.15%$5M312.9K
17EXKEXACT SCIENCES CORPhistory →COM3.11%$5M87.0K
18FIVNFIVE9 INChistory →COM2.98%$4M167.4K
19OSUROraSure Technologies Inchistory →COM2.43%$4M1.21M
20ASPNASPEN AEROGELS INChistory →COM2.25%$3M565.6K
21AOSLALPHA & OMEGA SEMICONDUCTOR LThistory →SHS2.07%$3M120.2K
22KLTRKALTURA INChistory →COM1.87%$3M1.39M
23NVDANVIDIA CORPORATIONhistory →COM1.76%$3M16.6K
24CNFINANCE HLDGS LTDSPON ADS0.69%$1M1.57M

Filing History

QuarterReported ValuePositionsFiledTypeLinks
Q1 2026$136M22Apr 22, 202613F-HRchanges · EDGAR ↗
Q4 2025$158M23Feb 13, 202613F-HRchanges · EDGAR ↗
Q3 2025$162M24Nov 3, 202513F-HRchanges · EDGAR ↗
Q2 2025$149M24Jul 23, 202513F-HRchanges · EDGAR ↗
Q1 2025$142M28May 12, 202513F-HRchanges · EDGAR ↗
Q4 2024$156M26Jan 24, 202513F-HRchanges · EDGAR ↗
Q3 2024$155M27Nov 12, 202413F-HRchanges · EDGAR ↗
Q2 2024$131M27Aug 14, 202413F-HRchanges · EDGAR ↗
Q1 2024$115M27May 13, 202413F-HRchanges · EDGAR ↗
Q4 2023$114M26Feb 14, 202413F-HRchanges · EDGAR ↗
Q3 2023$120M28Nov 14, 202313F-HRchanges · EDGAR ↗
Q2 2023$149M29Aug 8, 202313F-HRchanges · EDGAR ↗
Q1 2023$149M28Apr 10, 202313F-HRchanges · EDGAR ↗
Q4 2022$148M29Feb 7, 202313F-HRchanges · EDGAR ↗
Q3 2022$154M32Nov 14, 202213F-HRchanges · EDGAR ↗
Q2 2022$165M33Aug 1, 202213F-HRchanges · EDGAR ↗
Q1 2022$217M33May 9, 202213F-HRchanges · EDGAR ↗
Q4 2021$252M34Feb 8, 202213F-HRchanges · EDGAR ↗
Q3 2021$252M35Nov 12, 202113F-HRchanges · EDGAR ↗
Q2 2021$263M32Jul 28, 202113F-HRchanges · EDGAR ↗
Q1 2021$474M30May 14, 202113F-HRchanges · EDGAR ↗
Q4 2020$222M29Feb 12, 202113F-HRchanges · EDGAR ↗
Q3 2020$163M30Nov 12, 202013F-HRchanges · EDGAR ↗
Q2 2020$139M26Aug 14, 2020RESTATEMENTchanges · EDGAR ↗
Q1 2020$107M27May 11, 202013F-HRchanges · EDGAR ↗
Q4 2019$178M32Feb 14, 202013F-HRchanges · EDGAR ↗
Q3 2019$161M32Nov 8, 201913F-HRchanges · EDGAR ↗
Q2 2019$175M33Aug 12, 201913F-HRchanges · EDGAR ↗
Q1 2019$175M33May 13, 201913F-HRchanges · EDGAR ↗
Q4 2018$142M31Jan 18, 201913F-HRchanges · EDGAR ↗

13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.