SEC 13F Intelligence

Managers / Q1 2026

Gagnon Advisors, LLC

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

Reported Value
$136M
Q1 2026
Positions
22
Filings on Record
32
2019–present window
Filed
Apr 22, 2026
original filing

Summary

Gagnon Advisors, LLC reported $136M in U.S.-listed holdings across 22 positions for Q1 2026.

Its largest position, EPD, represents 9.5% of the portfolio.

Compared with Q4 2025, the fund opened 2 new positions and exited 3.

Portfolio Metrics

Turnover
+14.1%
vs prior filed quarter
Top-10 Concentration
+69.7%
share of reported value
Largest Position
+9.5%
Enterprise Prods Partners L P
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: 65.9%Other: 9.6%MLP: 9.5%REIT: 7.7%ETP: 7.1%Other: 0.2%
  • Common Stock · 65.9% · $90M
  • Other · 9.6% · $13M
  • MLP · 9.5% · $13M
  • REIT · 7.7% · $11M
  • ETP · 7.1% · $10M
  • Other · 0.2% · $314,204

Quarter-over-Quarter Changes full breakdown →

vs Q4 2025 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
ISHARES TRNEW+95.6K95.6K+$10M$10M
HNGEHINGE HEALTH INCNEW+80.8K80.8K+$3M$3M
ALAIR LEASE CORPSOLD OUT−196.5K0−$13M$0
TMCITREACE MED CONCEPTS INCSOLD OUT−1.53M0−$4M$0
NVDANVIDIA CORPORATIONSOLD OUT−16.6K0−$3M$0
HZOMarineMax IncTRIMMED−97.2K97.2K−$2M$3M
AMPLAMPLITUDE INCADDED+177.8K635.0K−$963,904$4M
FRSHFRESHWORKS INCADDED+211.3K776.2K−$686,786$6M

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

Holdings — Q1 2026

22 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1EPDENTERPRISE PRODS PARTNERS L Phistory →COM9.46%$13M339.9K
2AMRCAMERESCO INChistory →CLA8.87%$12M472.8K
3EQIXEQUINIX INChistory →COM7.73%$11M10.7K
4NAVIGATOR HLDGS LTDSHS7.68%$10M539.9K
5ISHARES TR0-3 MNTH TREASRY7.08%$10M95.6K
6WGSGENEDX HOLDINGS CORPhistory →COM CL A7.00%$10M148.2K
7CDNACAREDX INChistory →COM6.81%$9M532.9K
8PCRXPACIRA BIOSCIENCES INChistory →COM5.86%$8M352.6K
9PRNPROFOUND MED CORPhistory →COM NEW4.59%$6M962.2K
10FRSHFRESHWORKS INChistory →CLASS A COM4.59%$6M776.2K
11BLFSBIOLIFE SOLUTIONS INChistory →COM NEW3.85%$5M274.2K
12FIVNFIVE9 INChistory →COM3.75%$5M336.3K
13BLBLACKLINE INChistory →COM3.54%$5M130.1K
14AMPLAMPLITUDE INChistory →COM CL A3.19%$4M635.0K
15DVDOUBLEVERIFY HLDGS INChistory →COM3.06%$4M438.0K
16EP3OraSure Technologies Inchistory →COM2.66%$4M1.21M
17VERXVERTEX INChistory →CL A2.60%$4M297.1K
18HNGEHINGE HEALTH INChistory →CL A2.29%$3M80.8K
19ALPHA & OMEGA SEMICONDUCTOR LTSHS1.96%$3M120.2K
20HZOMarineMax Inchistory →COM1.94%$3M97.2K
21KLTRKALTURA INChistory →COM1.27%$2M1.41M
22CNFCNFINANCE HLDGS LTDSPON ADS0.23%$314,20480.4K

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 ↗.