SEC 13F Intelligence

Managers / Q4 2023 · view latest →

Gagnon Advisors, LLC

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

Reported Value
$114M
Q4 2023
Positions
26
Filings on Record
32
2019–present window
Filed
Feb 14, 2024
original filing

Summary

Gagnon Advisors, LLC reported $114M in U.S.-listed holdings across 26 positions for Q4 2023.

Its largest position, AL, represents 9.7% of the portfolio.

Compared with Q3 2023, the fund opened 2 new positions and exited 4.

Portfolio Metrics

Turnover
+11.5%
vs prior filed quarter
Top-10 Concentration
+64.0%
share of reported value
Largest Position
+9.7%
Air Lease
New / Exited
2 / 4
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. 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: 73.6%Other: 14.0%MLP: 7.8%REIT: 4.6%
  • Common Stock · 73.6% · $84M
  • Other · 14.0% · $16M
  • MLP · 7.8% · $9M
  • REIT · 4.6% · $5M

Quarter-over-Quarter Changes full breakdown →

vs Q3 2023 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
DVDOUBLEVERIFY HLDGS INCNEW+67.7K67.7K+$2M$2M
VERXVERTEX INCNEW+57.8K57.8K+$2M$2M
YEXTYEXT INCSOLD OUT−567.5K0−$4M$0
OPSEUROPSENS INCSOLD OUT−2.01M0−$3M$0
MIROMATRIX MED INCSOLD OUT−556.8K0−$729,349$0
E2OPEN PARENT HOLDINGS INCSOLD OUT−280.3K0−$131,754$0
ETWOGBPE2OPEN PARENT HOLDINGS INCTRIMMED−940.9K780.7K−$4M$3M
AMRCAMERESCO INCADDED+48.1K193.3K+$521,377$6M

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

Holdings — Q4 2023

25 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1ALAIR LEASE CORPhistory →CL A9.66%$11M263.7K
2NAVIGATOR HOLDINGS LTDSHS8.13%$9M639.7K
3EPDENTERPRISE PRODS PARTNERS LPhistory →COM7.82%$9M339.9K
4FIVNFIVE9 INChistory →COM6.52%$7M94.9K
5BLBLACKLINE INChistory →COM5.97%$7M109.5K
6CDNACAREDX INChistory →COM5.82%$7M554.9K
7AMRCAMERESCO INChistory →CL A5.35%$6M193.3K
8PRNPROFOUND MED CORPhistory →COM NEW5.04%$6M679.3K
9FRSHFRESHWORKS INChistory →CLASS A COM4.85%$6M236.5K
1007SSECUREWORKS CORPhistory →CL A4.80%$5M744.4K
11EQIXEQUINIX INChistory →COM4.64%$5M6.6K
12ALPHA AND OMEGA SEMICONDUCTOR LTDSHS4.31%$5M189.4K
13ZUOUSDZUORA INChistory →COM CL A4.22%$5M514.2K
14PCRXPACIRA BIOSCIENCES INChistory →COM3.93%$5M133.4K
15BLFSBIOLIFE SOLUTIONS INChistory →COM NEW3.89%$4M274.2K
16ETWOGBPE2OPEN PARENT HOLDINGS INChistory →COM CL A2.99%$3M780.7K
17EVBGEUREVERBRIDGE INChistory →COM2.22%$3M104.4K
18DVDOUBLEVERIFY HLDGS INChistory →COM2.18%$2M67.7K
19KLTRKALTURA INChistory →COM1.75%$2M1.03M
20CNFINANCE HOLDINGS LIMITEDSPON ADS1.52%$2M784.7K
21VERXVERTEX INChistory →CL A1.36%$2M57.8K
22SOMALOGIC INCCLASS A COM · W EXP 08/31/20261.35%$2M708.3K
23PSIXPOWER SOLUTIONS INTERNATIONAL INChistory →COM1.18%$1M659.7K
24WGSGENEDX HOLDINGS CORPCOM CL A0.36%$410,669149.3K
25EVAUSDENVIVA INCCOM0.13%$148,378149.0K

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 ↗.