SEC 13F Intelligence

Managers / Q3 2020 · view latest →

Gagnon Advisors, LLC

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

Reported Value
$163M
Q3 2020
Positions
30
Filings on Record
32
2019–present window
Filed
Nov 12, 2020
original filing

Summary

Gagnon Advisors, LLC reported $163M in U.S.-listed holdings across 30 positions for Q3 2020.

Its largest position, AMRC, represents 9.0% of the portfolio.

Compared with Q2 2020, the fund opened 3 new positions and exited 0.

Portfolio Metrics

Turnover
+3.8%
vs prior filed quarter
Top-10 Concentration
+59.0%
share of reported value
Largest Position
+9.0%
Ameresco

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: 86.4%Other: 5.8%REIT: 4.3%MLP: 2.7%PUBLIC: 0.8%
  • Common Stock · 86.4% · $141M
  • Other · 5.8% · $9M
  • REIT · 4.3% · $7M
  • MLP · 2.7% · $4M
  • PUBLIC · 0.8% · $1M

Quarter-over-Quarter Changes full breakdown →

vs Q2 2020 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
MRKMERCK &CO. INC COMNEW+57.8K57.8K+$5M$5M
TFF PHARMACEUTICALS INCNEW+176.5K176.5K+$3M$3M
CM LIFE SCIENCES INCNEW+237.6K237.6K+$2M$2M
APOLLO ENDOSURGERY INCADDED+400.0K919.8K+$705,000$2M
BLFSBIOLIFE SOLUTIONS INCADDED+75.5K194.8K+$4M$6M
LUMBER LIQUIDATORS HLDGSADDED+104.6K287.6K+$4M$6M
CASTLIGHT HEALTH INCTRIMMED−740.8K1.80M−$74,000$2M
PROFPROFOUND MED CORPADDED+20.4K277.3K+$541,000$5M

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

Holdings — Q3 2020

28 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1AMRCAMERESCO INChistory →CLA9.02%$15M440.0K
2CDNACAREDX INChistory →COM8.03%$13M344.9K
3PCRXPACIRA BIOSCIENCEShistory →COM7.15%$12M193.9K
4BLBLACKLINE INChistory →COM6.81%$11M123.8K
5FIVNFIVE9 INC COM USD0.001history →COM5.88%$10M73.9K
6ALAIR LEASE CORPhistory →CL A4.60%$8M254.9K
7NVGSNAVIGATOR HOLDINGS LTDhistory →SHS4.60%$7M896.9K
8NEW RELIC INCCOM4.31%$7M124.6K
9GFNGENERAL FIN CORP DELCL A · PFD4.30%$7M904.4K
10EQIXEQUINIX INC COMhistory →COM4.28%$7M9.2K
11AOSLALPHA AND OMEGA SEMICONDUCTORhistory →SHS4.16%$7M528.8K
12EVERBRIDGE INC COMCOM3.92%$6M50.8K
13LUMBER LIQUIDATORS HLDGSCOM3.89%$6M287.6K
14BLFSBIOLIFE SOLUTIONS INChistory →COM NEW3.46%$6M194.8K
15PROFPROFOUND MED CORPhistory →COM NEW3.00%$5M277.3K
16YEXTYEXT INChistory →CL A2.96%$5M317.5K
17ONTOONTO INNOVATION INChistory →COM2.74%$4M149.6K
18EPDENTERPRISE PRODS PARTNERS L Phistory →COM2.68%$4M276.0K
19SECUREWORKS CORPCL A2.45%$4M350.3K
20TFF PHARMACEUTICALS INCCOM2.00%$3M176.5K
21MRKMERCK &CO. INC COMhistory →COM1.96%$3M38.6K
22CM LIFE SCIENCES INCUNIT 9/1/20251.53%$2M237.6K
23CASTLIGHT HEALTH INCCL B1.25%$2M1.80M
24PSIXPOWER SOLUTIONS INTERNATIONAL INChistory →COM1.17%$2M626.6K
25WPX ENERGY INCCOM1.04%$2M346.1K
26APOLLO ENDOSURGERY INCCOM0.95%$2M919.8K
27CELCCELCUITY INCCOM0.51%$823,000141.8K
28CNFINANCE HLDGS LTDSPON ADS0.35%$576,000181.6K

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 ↗.