SEC 13F Intelligence

Managers / Q1 2019 · view latest →

Gagnon Advisors, LLC

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

Reported Value
$175M
Q1 2019
Positions
33
Filings on Record
32
2019–present window
Filed
May 13, 2019
original filing

Summary

Gagnon Advisors, LLC reported $175M in U.S.-listed holdings across 33 positions for Q1 2019.

Its largest position, CDNA, represents 6.6% of the portfolio.

Compared with Q4 2018, the fund opened 3 new positions and exited 1.

Portfolio Metrics

Turnover
+8.7%
vs prior filed quarter
Top-10 Concentration
+48.6%
share of reported value
Largest Position
+6.6%
Caredx
New / Exited
3 / 1
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: 78.2%Other: 12.8%REIT: 4.0%MLP: 2.8%ADR: 1.4%Other: 0.8%
  • Common Stock · 78.2% · $137M
  • Other · 12.8% · $22M
  • REIT · 4.0% · $7M
  • MLP · 2.8% · $5M
  • ADR · 1.4% · $3M
  • Other · 0.8% · $1M

Quarter-over-Quarter Changes full breakdown →

vs Q4 2018 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
I8RIROBOT CORPNEW+52.2K52.2K+$6M$6M
YEXTYEXT INCNEW+242.5K242.5K+$5M$5M
EPDENTERPRISE PRODS PARTNERS LPNEW+171.1K171.1K+$5M$5M
RHT1EURRED HAT INCSOLD OUT−63.8K0−$11M$0
EQIXEQUINIX INCADDED+7.2K15.2K+$4M$7M
FLEXION THERAPEUTICS INCADDED+189.9K401.6K+$3M$5M
CSLT1EURCASTLIGHT HEALTH INCADDED+740.8K1.91M+$5M$7M
ZUOUSDZUORA INCADDED+62.0K180.5K+$1M$4M

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

Holdings — Q1 2019

32 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1CDNACAREDX INChistory →COM6.59%$12M365.4K
2AMRCAMERESCO INChistory →CLA5.86%$10M633.0K
3GFNGENERAL FIN CORP DELCOM · SERIES C PREFERRED5.53%$10M904.4K
4EVBGEUREVERBRIDGE INChistory →COM5.33%$9M124.1K
5ALAIR LEASE CORPhistory →CL A5.01%$9M254.9K
6INSTEURINSTRUCTURE INChistory →COM4.58%$8M169.8K
7NEWREURNEW RELIC INChistory →COM4.54%$8M80.4K
8CSLT1EURCASTLIGHT HEALTH INChistory →CL B4.10%$7M1.91M
9EQIXEQUINIX INChistory →COM PAR $0.0013.95%$7M15.2K
10SUSUNCOR ENERGYhistory →COM3.89%$7M209.9K
1107SSECUREWORKS CORPhistory →CL A3.69%$6M350.3K
12RTECEURRUDOLPH TECH INChistory →COM3.52%$6M270.1K
13I8RIROBOT CORPhistory →COM3.51%$6M52.2K
14ALPHA & OMEGA SEMICONDUCTOR LTDSHS3.48%$6M528.8K
15NAVIGATOR HOLDINGS LTDSHS3.35%$6M532.7K
16AMBRUSDAMBER ROAD INChistory →COM3.33%$6M671.2K
17BLBLACKLINE INChistory →COM3.19%$6M120.4K
18YEXTYEXT INChistory →COM3.03%$5M242.5K
19FLEXION THERAPEUTICS INCCL A2.87%$5M401.6K
20EPDENTERPRISE PRODS PARTNERS LPhistory →COM2.85%$5M171.1K
21WPXUSDWPX ENERGY INChistory →COM2.60%$5M346.1K
22FIVNFIVE9 INChistory →COM2.57%$4M84.9K
23ZUOUSDZUORA INChistory →COM CL A2.07%$4M180.5K
24PSIXPOWER SOLUTIONS INTL INChistory →COM NEW1.91%$3M445.8K
25LUMBER LIQUIDATORS HLDGS INCSHS1.81%$3M313.2K
26CELCCELCUITY INChistory →COM1.66%$3M132.6K
27TALEND SAADS1.44%$3M49.8K
28HQ8FAPOLLO ENDOSURGERY INChistory →COM1.11%$2M519.8K
29CEMIUSDCHEMBIO DIAGNOSTICS INCCOM NEW0.79%$1M249.1K
30CNFINANCE HOLDINGS LIMITEDSPON ADS0.63%$1M181.6K
31PROFOUND MED CORPCOM0.63%$1M1.83M
32POEEURPAN ORIENT ENERGY CORPCOM0.58%$1M718.9K

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 ↗.