Gagnon Advisors, LLC

In its 13F for Q3 2024 (holdings as of September 30, 2024, filed November 12, 2024), Gagnon Advisors, LLC reported 27 stock positions worth $154.8 million. Its top holding was Power Solutions Internationa (PSIX) at 10.1% of the portfolio, followed by Caredx (CDNA, 8.3%) and Genedx (WGS, 7.0%). Compared with Q2 2024, it opened 2 new positions, sold out of 2, added to 4 and reduced 3. The biggest buy was a new position in Treace Medical Concepts (TMCI) and the biggest sale Alpha & Omega Semiconductor (AOSL, shares −37%).

Most Recent 13F
Q2 2026
Location
New York, NY
CIK
0001599466
Portfolio Value
$154.8M (Q3 2024)
SEC Filing
0001019056-24-000314 ↗ filed Nov 12, 2024

Holdings Value

0$50.0M$100.0M$150.0M$200.0M Q1 2024: $115.3M Q1 2024 Q2 2024: $131.3M Q2 2024 Q3 2024: $154.8M $154.8M Q3 2024 Q4 2024: $156.2M Q4 2024 Q1 2025: $141.8M Q1 2025 Q2 2025: $148.8M Q2 2025 Q3 2025: $162.0M Q3 2025 Q4 2025: $157.5M Q4 2025 Q1 2026: $135.9M Q1 2026 Q2 2026: $157.3M Q2 2026

Holdings 27 stocks · $154.8M

PSIX Power Solutions Internationa 10.06% 757,744 $15.6M No change
CDNA Caredx Inc. 8.33% 412,875 $12.9M Reduce -32.4%
WGS Genedx Holdings Corp. 6.99% 255,059 $10.8M No change
EPD Enterprise Products Partners 6.39% 339,877 $9.9M No change
AL Sumisho Air Lease Corp. filed as AIR LEASE CORP 5.75% 196,479 $8.9M No change
NVGS Navigator Holdings Ltd. 5.37% 517,066 $8.3M No change
AMRC Ameresco Inc. Class A 5.05% 205,948 $7.8M Add +6.5%
BLFS Biolife Solutions Inc. 4.43% 274,217 $6.9M No change
SCWX Secureworks Corp. Class A 4.25% 744,444 $6.6M No change
PROF Profound Medical Corp. 3.84% 747,226 $5.9M No change
EXAS Exact Sciences Corp. 3.83% 86,972 $5.9M Reduce -17.3%
EQIX Equinix Inc. 3.78% 6,600 $5.9M No change
BL Blackline Inc. 3.69% 103,692 $5.7M No change
FRSH Freshworks Inc. Class A 3.49% 470,434 $5.4M Add +38.0%
FIVN FIVE9 Inc. 3.11% 167,386 $4.8M Add +33.3%
AOSL Alpha & Omega Semiconductor 2.88% 120,196 $4.5M Reduce -36.5%
VERX Vertex Inc. Class A 2.87% 115,594 $4.5M No change
ZUO Zuora Inc. Class A 2.86% 514,247 $4.4M No change
VRN Veren Inc. 2.47% 623,113 $3.8M Add +31.5%
ETWO E2OPEN Parent Holdings Inc. 2.22% 780,745 $3.4M No change
TMCI Treace Medical Concepts Inc. 1.83% 489,891 $2.8M New
DV Doubleverify Holdings Inc. 1.47% 135,410 $2.3M No change
NVDA Nvidia Corp. 1.30% 16,555 $2.0M New
PCRX Pacira Biosciences Inc. 1.30% 133,390 $2.0M No change
KLTR Kaltura Inc. 0.90% 1,029,708 $1.4M No change
IONQ Ionq Inc. 0.89% 158,375 $1.4M No change
CNF Cnfinance Hldgs Ltd. 0.63% 784,717 $981K No change

Portfolio Sells Q2 2024 → Q3 2024

AOSL Alpha & Omega Semiconductor Reduce -36.5% 2.88% −2.51
LAB Standard Biotools Inc. Sold out 0.00% −0.91
EVVAQ Enviva LLC Sold out 0.00% −0.05
EXAS Exact Sciences Corp. Reduce -17.3% 3.83% +0.44
CDNA Caredx Inc. Reduce -32.4% 8.33% +1.11

Portfolio Buys Q2 2024 → Q3 2024

TMCI Treace Medical Concepts Inc. New 1.83% +1.83
NVDA Nvidia Corp. New 1.30% +1.30
AMRC Ameresco Inc. Class A Add +6.5% 5.05% +0.81
FRSH Freshworks Inc. Class A Add +38.0% 3.49% +0.19
VRN Veren Inc. Add +31.5% 2.47% −0.36
FIVN FIVE9 Inc. Add +33.3% 3.11% −1.11

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 23$157.3MCDNA, AMRC, EPD, WGS, EQIX
Q1 2026 22$135.9MEPD, AMRC, EQIX, NVGS, SGOV
Q4 2025 23$157.5MWGS, AMRC, AL, EPD, CDNA
Q3 2025 24$162.0MAMRC, WGS, FRSH, AL, EPD
Q2 2025 24$148.8MWGS, PSIX, AL, EPD, CDNA
Q1 2025 28$141.8MEPD, WGS, AL, PSIX, CDNA
Q4 2024 26$156.2MWGS, PSIX, EPD, AL, CDNA
Q3 2024 27$154.8MPSIX, CDNA, WGS, EPD, AL
Q2 2024 27$131.3MEPD, CDNA, AL, NVGS, AOSL
Q1 2024 26$115.3MAL, EPD, NVGS, BL, FIVN