SEC 13F Intelligence

Managers / Q4 2021 · view latest →

Gagnon Advisors, LLC

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

Reported Value
$252M
Q4 2021
Positions
34
Filings on Record
32
2019–present window
Filed
Feb 8, 2022
original filing

Summary

Gagnon Advisors, LLC reported $252M in U.S.-listed holdings across 34 positions for Q4 2021.

Its largest position, Alpha And Omega Semiconductor, represents 9.6% of the portfolio.

Compared with Q3 2021, the fund opened 2 new positions and exited 3.

Portfolio Metrics

Turnover
+11.6%
vs prior filed quarter
Top-10 Concentration
+55.7%
share of reported value
Largest Position
+9.6%
Alpha And Omega Semiconductor
New / Exited
2 / 3
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: 76.2%Other: 17.9%REIT: 3.1%MLP: 2.4%Equity WRT: 0.4%
  • Common Stock · 76.2% · $192M
  • Other · 17.9% · $45M
  • REIT · 3.1% · $8M
  • MLP · 2.4% · $6M
  • Equity WRT · 0.4% · $1M

Quarter-over-Quarter Changes full breakdown →

vs Q3 2021 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
E2OPEN PARENT HOLDINGS INCNEW+280.3K280.3K+$813,000$813,000
AMERICAN WELL CORPNEW+4.6K4.6K+$64,000$64,000
ONTOONTO INNOVATION INCSOLD OUT−71.3K0−$5M$0
E2OPEN PARENT HOLDINGSINCSOLD OUT−280.3K0−$813,000$0
TFF PHARMACEUTICALS INCSOLD OUT−18.6K0−$143,000$0
SMFRUSDSEMA4 HOLDINGS CORPADDED+368.7K739.1K+$485,000$3M
WGSWWSEMA4 HOLDINGS CORPADDED+122.9K246.4K−$21,000$241,000
YEXTYEXT INCADDED+325.8K1.14M+$2M$11M

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

Holdings — Q4 2021

31 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1ALPHA AND OMEGA SEMICONDUCTOR LTDSHS9.59%$24M398.6K
2PCRXPACIRA BIOSCIENCEShistory →COM6.00%$15M251.1K
3AMRCAMERESCO INChistory →CLA5.83%$15M180.3K
4NEWREURNEW RELIC INChistory →COM5.44%$14M124.6K
5ALAIR LEASE CORPhistory →CL A5.36%$13M305.0K
6BLBLACKLINE INChistory →COM5.09%$13M123.8K
7CDNACAREDX INChistory →COM5.01%$13M277.3K
8YEXTYEXT INChistory →CL A4.49%$11M1.14M
9HQ8FAPOLLO ENDOSURGERY INChistory →COM4.45%$11M1.33M
10FIVNFIVE9 INChistory →COM4.43%$11M81.3K
11ETWOGBPE2OPEN PARENT HOLDINGS INCCOM CL A · *W EXP 02/04/2024.08%$10M1.12M
12EVAUSDENVIVA PARTNERS LPhistory →COM UNIT4.05%$10M144.8K
13NAVIGATOR HLDGS LTDSHS3.85%$10M1.09M
14EQIXEQUINIX INChistory →COM3.08%$8M9.2K
1507SSECUREWORKS CORPhistory →CL A2.97%$7M468.6K
16EVBGEUREVERBRIDGE INChistory →COM2.79%$7M104.4K
17LUMBER LIQUIDATORS HOLDINGS INCCOM2.78%$7M409.8K
18BLFSBIOLIFE SOLUTIONS INChistory →COM NEW2.59%$7M175.3K
19ZUOUSDZUORA INChistory →CL A2.51%$6M338.0K
20SOMALOGIC INCCLASS A COM · *W EXP 8/31/20262.51%$6M615.6K
21EPDENTERPRISE PRODS PARTNERS L Phistory →COM2.41%$6M276.0K
22CSLT1EURCASTLIGHT HEALTH INChistory →CL B1.81%$5M2.96M
23PRNPROFOUND MED CORPhistory →COM NEW1.79%$5M402.2K
24SMFRUSDSEMA4 HOLDINGS CORPCOM CL A · *W EXP 07/22/20261.40%$4M985.5K
25FRSHFRESHWORKS INChistory →CLASS A COM1.24%$3M118.6K
26OPSEUROPSENS INChistory →COM1.17%$3M1.20M
27CNFINANCE HOLDINGS LIMITEDSPON ADS1.08%$3M667.8K
28CELCCELCUITY INCCOM0.98%$2M187.9K
29PSIXPOWER SOLUTIONS INTERNATIONAL INCCOM0.75%$2M626.6K
30MIROMATRIX MED INCCOM0.43%$1M229.8K
31AMERICAN WELL CORPCALL0.03%$64,0004.6K

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 ↗.