SEC 13F Intelligence

Managers / Q3 2023 · view latest →

Gagnon Advisors, LLC

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

Reported Value
$120M
Q3 2023
Positions
28
Filings on Record
32
2019–present window
Filed
Nov 14, 2023
original filing

Summary

Gagnon Advisors, LLC reported $120M in U.S.-listed holdings across 28 positions for Q3 2023.

Its largest position, AL, represents 8.7% of the portfolio.

Compared with Q2 2023, the fund opened 0 new positions and exited 1.

Portfolio Metrics

Turnover
+2.0%
vs prior filed quarter
Top-10 Concentration
+60.9%
share of reported value
Largest Position
+8.7%
Air Lease

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: 72.4%Other: 15.7%MLP: 7.8%REIT: 4.0%Equity WRT: 0.1%
  • Common Stock · 72.4% · $86M
  • Other · 15.7% · $19M
  • MLP · 7.8% · $9M
  • REIT · 4.0% · $5M
  • Equity WRT · 0.1% · $131,754

Quarter-over-Quarter Changes full breakdown →

vs Q2 2023 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
NEWREURNEW RELIC INCSOLD OUT−137.0K0−$9M$0
NAVIGATOR HOLDINGS LTDTRIMMED−267.9K639.7K−$2M$9M
OPSEUROPSENS INCADDED+288.0K2.01M+$510,481$3M
EQIXEQUINIX INCHELD−2616.6K−$585,296$5M
WGSGENEDX HOLDINGS CORPHELD+15149.3K−$346,367$543,576
BLFSBIOLIFE SOLUTIONS INCHELD+0360.8K−$3M$5M
YEXTYEXT INCHELD+0567.5K−$3M$4M
PRNPROFOUND MED CORPHELD+0679.3K−$2M$7M

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

Holdings — Q3 2023

26 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1ALAIR LEASE CORPhistory →CL A8.69%$10M263.7K
2NAVIGATOR HOLDINGS LTDSHS7.90%$9M639.7K
3EPDENTERPRISE PRODS PARTNERS L.P.history →COM7.78%$9M339.9K
4ETWOGBPE2OPEN PARENT HOLDINGS INCCOM CL A · W EXP 02/04/20236.65%$8M2.00M
5PRNPROFOUND MED CORPhistory →COM NEW5.80%$7M679.3K
6FIVNFIVE9 INChistory →COM5.10%$6M94.9K
7BLBLACKLINE INChistory →COM5.08%$6M109.5K
8ALPHA AND OMEGA SEMICONDUCTOR LTDSHS4.73%$6M189.4K
9AMRCAMERESCO INChistory →CLA4.69%$6M145.3K
10PCRXPACIRA BIOSCIENCEShistory →COM4.63%$6M180.3K
11BLFSBIOLIFE SOLUTIONS INChistory →COM NEW4.17%$5M360.8K
12EQIXEQUINIX INChistory →COM4.01%$5M6.6K
13FRSHFRESHWORKS INChistory →CLASS A COM3.94%$5M236.5K
1407SSECUREWORKS CORPhistory →CL A3.87%$5M744.4K
15ZUOUSDZUORA INChistory →CL A3.54%$4M514.2K
16CDNACAREDX INChistory →COM3.25%$4M554.9K
17YEXTYEXT INChistory →CL A3.01%$4M567.5K
18CNFINANCE HOLDINGS LIMITEDSPON ADS2.48%$3M784.7K
19OPSEUROPSENS INChistory →COM2.20%$3M2.01M
20EVBGEUREVERBRIDGE INChistory →COM1.96%$2M104.4K
21PSIXPOWER SOLUTIONS INTERNATIONAL INChistory →COM1.80%$2M659.7K
22KLTRKALTURA INChistory →COM1.49%$2M1.03M
23SOMALOGIC INCCLASS A COM · W EXP 08/31/20231.23%$1M708.3K
24EVAUSDENVIVA INCCOM UNIT0.93%$1M149.0K
25MIROMATRIX MED INCCOM0.61%$729,349556.8K
26WGSGENEDX HOLDINGS CORPCOM CL A0.45%$543,576149.3K

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 ↗.