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Gagnon Advisors, LLC

Hedge FundLong/Short

Gagnon Advisors, LLC is a Long/Short Hedge Fund based in New York, NY led by Neil Joseph Gagnon, reporting $181.1M in AUM as of Q3 2025 with 31% Technology concentration and 65% concentrated in top 10 holdings.

CEONeil Joseph Gagnon
Portfolio Value
$162.0M
Positions
24
Top Holding
AMRC at 9.8%
Last Reported
Q3 2025
Address1370 6th Avenue, 26th Floor, New York, NY, 10019, United States

Top Holdings

Largest long holdings in Gagnon Advisors, LLC's portfolio (64.6% of total portfolio)

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HoldingSectorPositionWeightTradedOwnership
Engineering & Construction
Industrials
$15.9M
9.80%
0.90%
472.8K shares
Medical - Healthcare Information Services
Healthcare
$13.7M
8.45%
0.44%
127.1K shares
Software - Application
Technology
$13.3M
8.21%
+$7.8M
Bought
1.1M shares
Rental & Leasing Services
Industrials
$12.5M
7.72%
0.18%
196.5K shares
Oil & Gas Midstream
Energy
$10.6M
6.56%
0.02%
339.9K shares
REIT - Specialty
Real Estate
$8.4M
5.18%
0.01%
10.7K shares
Oil & Gas Midstream
Energy
$8.0M
4.95%
0.77%
517.1K shares
8
CareDx logo
CareDx
CDNA
Medical - Diagnostics & Research
Healthcare
$7.7M
4.75%
+$1.1M
Bought
0.99%
529.4K shares
Software - Application
Technology
$7.5M
4.63%
+$3.7M
Bought
0.38%
625.8K shares
Medical - Instruments & Supplies
Healthcare
$7.0M
4.32%
0.57%
274.2K shares

Changes

Portfolio activity, position movements, and quarter-over-quarter changes in Gagnon Advisors, LLC's latest filing

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Market Value
$162.0M
Prior: $148.8M
Q/Q Change
+8.83%
+$13.1M
Net Flows % of MV
+3.91%
Turnover Ratio
12.21%
New Purchases
2 stocks
$7.6M
Added To
6 stocks
+$15.3M
Sold Out Of
2 stocks
$16.3M
Reduced Holdings
1 stocks
-$320.9K

Increased Positions

PositionShares Δ
New
New
+140.15%
+100.0%
+43.67%

Decreased Positions

PositionShares Δ
Sold
Sold
-48.8%

Analytics

Portfolio insights and performance metrics for Gagnon Advisors, LLC

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Sector Allocation

Technology: 30.70%TechnologyHealthcare: 30.00%HealthcareIndustrials: 20.00%IndustrialsEnergy: 11.50%EnergyReal Estate: 5.20%Consumer Cyclical: 2.40%
Technology
30.70%
Healthcare
30.00%
Industrials
20.00%
Energy
11.50%
Real Estate
5.20%
Consumer Cyclical
2.40%

Market Cap Distribution

Mega Cap (> $200B): 1.91%Large Cap ($10B - $200B): 11.74%Large Cap ($10B - $200B)Mid Cap ($2B - $10B): 24.00%Mid Cap ($2B - $10B)Small Cap ($300M - $2B): 47.58%Small Cap ($300M - $2B)Micro Cap ($50M - $300M): 6.36%Nano Cap (< $50M): 8.21%N/A (ETF or Unknown): 0.21%
Mega Cap (> $200B)
1.91%
Large Cap ($10B - $200B)
11.74%
Mid Cap ($2B - $10B)
24.00%
Small Cap ($300M - $2B)
47.58%
Micro Cap ($50M - $300M)
6.36%
Nano Cap (< $50M)
8.21%
N/A (ETF or Unknown)
0.21%

Portfolio Concentration

Top 10 Holdings %
64.58%
Top 20 Holdings %
94.55%
Top 50 Holdings %
100.0%
Top 100 Holdings %
100.0%

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