SEC 13F Intelligence

Managers / Q1 2025 · view latest →

Gagnon Advisors, LLC

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

Reported Value
$142M
Q1 2025
Positions
28
Filings on Record
32
2019–present window
Filed
May 12, 2025
original filing

Summary

Gagnon Advisors, LLC reported $142M in U.S.-listed holdings across 28 positions for Q1 2025.

Its largest position, EPD, represents 8.2% of the portfolio.

Compared with Q4 2024, the fund opened 2 new positions and exited 0.

Portfolio Metrics

Turnover
+7.0%
vs prior filed quarter
Top-10 Concentration
+56.6%
share of reported value
Largest Position
+8.2%
Enterprise Prods Partners L P

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: 86.9%MLP: 8.2%REIT: 4.5%Other: 0.4%
  • Common Stock · 86.9% · $123M
  • MLP · 8.2% · $12M
  • REIT · 4.5% · $6M
  • Other · 0.4% · $612,079

Quarter-over-Quarter Changes full breakdown →

vs Q4 2024 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
OSUROraSure Technologies IncNEW+797.3K797.3K+$3M$3M
MXCTMAXCYTE INCNEW+934.2K934.2K+$3M$3M
E2OPEN PARENT HOLDINGS INCADDED+1.17M2.34M+$2M$5M
AMRCAMERESCO INCADDED+200.1K472.8K−$691,455$6M
VERXVERTEX INCADDED+46.2K161.8K−$501,867$6M
WGSGENEDX HOLDINGS CORPTRIMMED−60.6K127.1K−$3M$11M
PSIXPOWER SOLUTIONS INTL INCTRIMMED−146.7K323.5K−$6M$8M
BLBLACKLINE INCADDED+26.4K130.1K−$3,305$6M

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

Holdings — Q1 2025

28 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1EPDENTERPRISE PRODS PARTNERS L Phistory →COM8.18%$12M339.9K
2WGSGENEDX HOLDINGS CORPhistory →COM CL A7.94%$11M127.1K
3ALAIR LEASE CORPhistory →CL A6.69%$9M196.5K
4PSIXPOWER SOLUTIONS INTL INChistory →COM5.77%$8M323.5K
5CDNACAREDX INChistory →COM5.17%$7M412.9K
6NVGSNAVIGATOR HLDGS LTDhistory →SHS4.85%$7M517.1K
7FRSHFRESHWORKS INChistory →CLASS A COM4.68%$7M470.4K
8EQIXEQUINIX INChistory →COM4.47%$6M7.8K
9BLBLACKLINE INChistory →COM4.44%$6M130.1K
10BLFSBIOLIFE SOLUTIONS INChistory →COM NEW4.42%$6M274.2K
11VEREN INCCOM NEW4.16%$6M890.7K
12AMRCAMERESCO INChistory →CLA4.03%$6M472.8K
13VERXVERTEX INChistory →CL A4.00%$6M161.8K
14PROFPROFOUND MED CORPhistory →COM NEW3.68%$5M896.7K
15E2OPEN PARENT HOLDINGS INCCOM CL A3.30%$5M2.34M
16FIVNFIVE9 INChistory →COM3.21%$5M167.4K
17TMCITREACE MED CONCEPTS INChistory →COM2.90%$4M489.9K
18EXKEXACT SCIENCES CORPhistory →COM2.66%$4M87.0K
19PCRXPACIRA BIOSCIENCES INChistory →COM2.34%$3M133.4K
20AOSLALPHA & OMEGA SEMICONDUCTOR LThistory →SHS2.11%$3M120.2K
21OSUROraSure Technologies Inchistory →COM1.89%$3M797.3K
22KLTRKALTURA INChistory →COM1.84%$3M1.39M
23MXCTMAXCYTE INChistory →COM1.80%$3M934.2K
24IONQIONQ INChistory →COM1.64%$2M105.6K
25NCNONCINO INChistory →COM1.50%$2M77.5K
26NVDANVIDIA CORPORATIONhistory →COM1.27%$2M16.6K
27DVDOUBLEVERIFY HLDGS INCCOM0.64%$905,21667.7K
28CNFINANCE HLDGS LTDSPON ADS0.43%$612,079784.7K

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 ↗.