SEC 13F Intelligence

Managers / Q3 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
Q3 2021
Positions
35
Filings on Record
32
2019–present window
Filed
Nov 12, 2021
original filing

Summary

Gagnon Advisors, LLC reported $252M in U.S.-listed holdings across 35 positions for Q3 2021.

Its largest position, CDNA, represents 6.4% of the portfolio.

Compared with Q2 2021, the fund opened 8 new positions and exited 5.

Portfolio Metrics

Turnover
+16.8%
vs prior filed quarter
Top-10 Concentration
+51.3%
share of reported value
Largest Position
+6.4%
Caredx
New / Exited
8 / 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: 80.2%Other: 14.5%REIT: 2.9%MLP: 2.4%Equity WRT: 0.1%
  • Common Stock · 80.2% · $202M
  • Other · 14.5% · $37M
  • REIT · 2.9% · $7M
  • MLP · 2.4% · $6M
  • Equity WRT · 0.1% · $262,000

Quarter-over-Quarter Changes full breakdown →

vs Q2 2021 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
EVAUSDENVIVA PARTNERS LPNEW+144.8K144.8K+$8M$8M
SOMALOGIC INCNEW+513.0K513.0K+$6M$6M
ZUOUSDZUORA INCNEW+338.0K338.0K+$6M$6M
FRSHFRESHWORKS INCNEW+118.6K118.6K+$5M$5M
SMFRUSDSEMA4 HOLDINGS CORPNEW+370.4K370.4K+$3M$3M
E2OPEN PARENT HOLDINGSINCNEW+280.3K280.3K+$813,000$813,000
SOMALOGIC INCNEW+102.6K102.6K+$354,000$354,000
WGSWWSEMA4 HOLDINGS CORPNEW+123.5K123.5K+$262,000$262,000

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

Holdings — Q3 2021

32 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1CDNACAREDX INChistory →COM6.38%$16M254.0K
2BLBLACKLINE INChistory →COM5.80%$15M123.8K
3AMRCAMERESCO INChistory →CLA5.58%$14M240.9K
4ALPHA AND OMEGA SEMICONDUCTORLTDSHS5.36%$14M430.8K
5PCRXPACIRA BIOSCIENCEShistory →COM5.33%$13M240.1K
6FIVNFIVE9 INChistory →COM5.15%$13M81.3K
7EVBGEUREVERBRIDGE INChistory →COM4.81%$12M80.2K
8HQ8FAPOLLO ENDOSURGERY INChistory →COM4.78%$12M1.33M
9ETWOGBPE2OPEN PARENT HOLDINGSINCCOM CL A · W EXP 2/4/2004.09%$10M1.12M
10ALAIR LEASE CORPhistory →CL A3.98%$10M254.9K
11YEXTYEXT INChistory →CL A3.88%$10M812.5K
1207SSECUREWORKS CORPhistory →CL A3.70%$9M468.6K
13NEWREURNEW RELIC INChistory →COM3.55%$9M124.6K
14NAVIGATOR HOLDINGS LTDSHS3.44%$9M973.8K
15EVAUSDENVIVA PARTNERS LPhistory →COM UNIT3.11%$8M144.8K
16LUMBER LIQUIDATORS HOLDINGSINCCOM3.04%$8M409.8K
17BLFSBIOLIFE SOLUTIONS INChistory →COM NEW2.94%$7M175.3K
18EQIXEQUINIX INChistory →COM2.87%$7M9.2K
19SOMALOGIC INCCLASS A COM · W EXP 8/31/20262.66%$7M615.6K
20EPDENTERPRISE PRODS PARTNERSL Phistory →COM2.37%$6M276.0K
21PRNPROFOUND MED CORPhistory →COM NEW2.34%$6M402.2K
22ZUOUSDZUORA INChistory →CL A2.22%$6M338.0K
23ONTOONTO INNOVATION INChistory →COM2.04%$5M71.3K
24FRSHFRESHWORKS INChistory →CLASS A COM2.01%$5M118.6K
25CSLT1EURCASTLIGHT HEALTH INChistory →CL B1.84%$5M2.96M
26CNFINANCE HOLDINGS LIMITEDSPON ADS1.56%$4M667.6K
27CELCCELCUITY INChistory →COM1.34%$3M187.9K
28SMFRUSDSEMA4 HOLDINGS CORPCOM CL A · W EXP 07/22/20261.22%$3M493.9K
29PSIXPOWER SOLUTIONS INTERNATIONALINCCOM0.99%$3M626.6K
30OPSEUROPSENS INCCOM0.93%$2M978.7K
31MIROMATRIX MED INCCOM0.63%$2M229.8K
32TFF PHARMACEUTICALS INCCOM0.06%$143,00018.6K

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 ↗.