Gagnon Securities LLC
Net seller this quarter
$519M
79
-$3.41M
47.7%
Holdings
| Company | Value | % of portfolio | % of company | POSITION CHANGE qoq % | First reported |
|---|---|---|---|---|---|
| Q2 2026 | |||||
 CDNA | $50.5M | 9.73% | 3.44% | +0.5% | Q3 2014 |
 WGS | $36M | 6.94% | 1.76% | +73.1% | Q3 2021 |
 ENSG | $27.9M | 5.37% | 0.30% | -3.2% | Q2 2018 |
 AMRC | $22.8M | 4.40% | Not reported | -1.6% | Q3 2013 |
 GNRC | $21.4M | 4.13% | 0.12% | -2.3% | Q2 2013 |
 EPD | $18.8M | 3.62% | 0.02% | -0.7% | Q4 2017 |
 QDEL | $18M | 3.48% | 1.51% | +155.5% | Q4 2017 |
 CAKE | $17.6M | 3.40% | 0.45% | -1.5% | Q4 2017 |
 EQIX | $17.4M | 3.36% | 0.02% | -1.4% | Q2 2013 |
 KMX | $17.2M | 3.32% | 0.23% | +5.1% | Q3 2013 |
 FRSH | $15.8M | 3.05% | 1.02% | -9.7% | Q3 2021 |
 PCRX | $15.4M | 2.98% | 1.53% | -1.4% | Q2 2019 |
 FIVN | $15.4M | 2.97% | 0.97% | +16.2% | Q2 2016 |
 HNGE | $15.2M | 2.93% | 1.12% | +47.3% | Q1 2026 |
 BLFS | $15.1M | 2.92% | 1.10% | -0.1% | Q2 2020 |
 PROF | $13M | 2.51% | 5.37% | +0.8% | Q4 2019 |
 CARG | $12.5M | 2.41% | Not reported | +35.2% | Q3 2022 |
 TMCI | $12.1M | 2.32% | 4.67% | -41.8% | Q2 2024 |
 ISRG | $11.6M | 2.23% | 0.01% | -7.8% | Q2 2018 |
 BL | $10.5M | 2.03% | 0.64% | +26.8% | Q3 2018 |
 ASPN | $9.74M | 1.88% | 1.85% | -17.5% | Q1 2018 |
 PRLB | $9.48M | 1.83% | 0.49% | +4.9% | Q1 2019 |
 VERX | $8.74M | 1.68% | 2.89% | +62.5% | Q4 2023 |
 AMPL | $8.07M | 1.56% | Not reported | -0.4% | Q3 2025 |
 HZO | $7.74M | 1.49% | 0.96% | -4.1% | Q3 2025 |
 OSUR | $7.1M | 1.37% | 2.31% | -7.1% | Q3 2021 |
 DV | $5.67M | 1.09% | 0.34% | +7.1% | Q4 2023 |
 CELC | $5.57M | 1.07% | 0.11% | -0.2% | Q3 2017 |
 CMG | $5.29M | 1.02% | 0.01% | -1.5% | Q2 2016 |
 CTRE | $5.24M | 1.01% | 0.06% | -2.3% | Q2 2018 |
 PNTG | $4.99M | 0.96% | 0.39% | -1.8% | Q4 2019 |
| WCPRF | $4.52M | 0.87% | Not reported | -0.1% | Q1 2025 |
 ICUI | $4.31M | 0.83% | 0.12% | -1.2% | Q1 2023 |
 KLTR | $4.25M | 0.82% | 2.15% | -0.4% | Q2 2023 |
 MCHP | $2.39M | 0.46% | 0.00% | -2.3% | Q2 2013 |
 GNTX | $1.44M | 0.28% | 0.03% | +0.4% | Q2 2013 |
 GNL | $1.44M | 0.28% | 0.08% | -5.6% | Q3 2023 |
 SLG | $1.34M | 0.26% | 0.04% | Not reported | Q3 2020 |
 SAM | $1.29M | 0.25% | Not reported | +0.6% | Q2 2022 |
 NCNO | $1.23M | 0.24% | 0.07% | -5.3% | Q4 2024 |
 FLG | $1.11M | 0.21% | 0.02% | -0.3% | Q2 2024 |
 APPS | $1.06M | 0.20% | 0.07% | Not reported | Q1 2023 |
 WEAV | $999K | 0.19% | 0.20% | +359.3% | Q4 2024 |
 DOCU | $929K | 0.18% | 0.01% | -1.5% | Q1 2026 |
 CNF | $921K | 0.18% | 0.21% | +5.9% | Q4 2018 |
 GOOGL | $913K | 0.18% | 0.00% | Not reported | Q1 2020 |
 MRVL | $871K | 0.17% | 0.00% | -57.2% | Q1 2019 |
 TECH | $864K | 0.17% | 0.01% | +23.8% | Q3 2023 |
 DVN | $786K | 0.15% | 0.00% | -0.2% | Q1 2021 |
 MU | $784K | 0.15% | 0.00% | -37.0% | Q2 2013 |
| Q1 2026 | |||||
| ENSG | $36.2M | 8.36% | 0.31% | -0.5% | Q2 2018 |
| CDNA | $30.6M | 7.06% | 3.44% | -0.7% | Q3 2014 |
| AMRC | $21.4M | 4.94% | Not reported | +0.9% | Q3 2013 |
| WGS | $19.5M | 4.49% | 1.02% | +19.6% | Q3 2021 |
| EPD | $19.5M | 4.49% | 0.02% | -2.5% | Q4 2017 |
 NVGS | $17.1M | 3.96% | 1.36% | +2.9% | Q1 2015 |
| EQIX | $16.6M | 3.84% | 0.02% | -1.1% | Q2 2013 |
| GNRC | $14.6M | 3.38% | 0.13% | -0.9% | Q2 2013 |
| ISRG | $14.6M | 3.36% | 0.01% | -0.6% | Q2 2018 |
| PCRX | $14M | 3.22% | 1.57% | +23.2% | Q2 2019 |
| FRSH | $13.9M | 3.21% | 1.12% | +40.8% | Q3 2021 |
| KMX | $12.9M | 2.97% | 0.22% | -3.2% | Q3 2013 |
| PROF | $12.6M | 2.91% | 5.35% | 0.0% | Q4 2019 |
| CAKE | $12.3M | 2.84% | 0.45% | -0.7% | Q4 2017 |
| BL | $11M | 2.53% | 0.50% | +6.1% | Q3 2018 |
| BLFS | $10.2M | 2.36% | 1.10% | +0.4% | Q2 2020 |
| FIVN | $9.44M | 2.18% | 0.81% | -0.6% | Q2 2016 |
| CARG | $9.25M | 2.13% | Not reported | +0.3% | Q3 2022 |
| AMPL | $7.23M | 1.67% | Not reported | +51.7% | Q3 2025 |
| TMCI | $6.97M | 1.61% | 8.05% | +67.2% | Q2 2024 |
| QDEL | $6.63M | 1.53% | 0.59% | +153.4% | Q4 2017 |
| ASPN | $6.37M | 1.47% | 2.25% | +64.3% | Q1 2018 |
| PRLB | $6.32M | 1.46% | 0.47% | -0.6% | Q1 2019 |
| CELC | $6.09M | 1.41% | 0.11% | -0.1% | Q3 2017 |
| HZO | $5.97M | 1.38% | 1.00% | -31.5% | Q3 2025 |
| VERX | $5.57M | 1.29% | 1.78% | +28.4% | Q4 2023 |
| OSUR | $5.14M | 1.19% | 2.47% | +9.2% | Q3 2021 |
| CMG | $5.05M | 1.17% | 0.01% | +0.6% | Q2 2016 |
| WCPRF | $4.9M | 1.13% | Not reported | -10.4% | Q1 2025 |
| CTRE | $4.88M | 1.13% | 0.06% | 0.0% | Q2 2018 |
| HNGE | $4.79M | 1.11% | 0.76% | New | Q1 2026 |
| DV | $4.64M | 1.07% | 0.31% | -0.7% | Q4 2023 |
| PNTG | $4.19M | 0.97% | 0.40% | 0.0% | Q4 2019 |
| KLTR | $4M | 0.92% | 2.19% | +14.6% | Q2 2023 |
| ICUI | $3.84M | 0.89% | 0.12% | +2.3% | Q1 2023 |
 AOSL | $3.72M | 0.86% | 0.56% | -22.2% | Q2 2013 |
 PTEN | $3.41M | 0.79% | 0.08% | -10.8% | Q3 2023 |
| MCHP | $1.73M | 0.40% | 0.01% | -1.2% | Q2 2013 |
| SAM | $1.67M | 0.39% | Not reported | +13.9% | Q2 2022 |
| GNL | $1.59M | 0.37% | 0.08% | -0.2% | Q3 2023 |
| GNTX | $1.24M | 0.29% | 0.03% | +2.3% | Q2 2013 |
 PFE | $1.24M | 0.29% | 0.00% | -0.2% | Q2 2016 |
| CNF | $1.23M | 0.28% | 0.20% | -0.9% | Q4 2018 |
| NCNO | $1.19M | 0.27% | 0.07% | +8.2% | Q4 2024 |
| DOCU | $1.01M | 0.23% | 0.01% | New | Q1 2026 |
| FLG | $984K | 0.23% | 0.02% | -0.2% | Q2 2024 |
| DVN | $959K | 0.22% | 0.00% | -0.2% | Q1 2021 |
| SLG | $955K | 0.22% | 0.04% | +0.1% | Q3 2020 |
 T | $930K | 0.21% | 0.00% | -3.4% | Q1 2018 |
 MTSI | $815K | 0.19% | 0.00% | +11.4% | Q3 2025 |
| Q4 2025 | |||||
| CDNA | $33.4M | 6.81% | 3.49% | +2.6% | Q3 2014 |
| WGS | $33M | 6.71% | 0.87% | -5.8% | Q3 2021 |
| AL | $31.9M | 6.50% | 0.44% | -17.9% | Q2 2013 |
| ENSG | $31.5M | 6.40% | 0.31% | -1.4% | Q2 2018 |
| AMRC | $24.4M | 4.97% | Not reported | -3.1% | Q3 2013 |
| ISRG | $18M | 3.67% | 0.01% | -26.7% | Q2 2018 |
 EXK | $17M | 3.46% | 0.06% | -6.7% | Q1 2023 |
| EPD | $16.9M | 3.44% | 0.02% | -0.2% | Q4 2017 |
| BL | $15.4M | 3.15% | 0.47% | +0.2% | Q3 2018 |
| PROF | $15.3M | 3.12% | 5.36% | +12.2% | Q4 2019 |
| FRSH | $15.1M | 3.07% | 0.80% | -34.1% | Q3 2021 |
| NVGS | $14.9M | 3.04% | 1.32% | -0.5% | Q1 2015 |
| EQIX | $13.1M | 2.67% | 0.02% | -0.6% | Q2 2013 |
| PCRX | $13M | 2.64% | 1.22% | +11.5% | Q2 2019 |
| BLFS | $12.9M | 2.63% | 1.11% | -0.3% | Q2 2020 |
| FIVN | $12.5M | 2.55% | 0.81% | +109.0% | Q2 2016 |
| KMX | $12.4M | 2.52% | 0.23% | +41.9% | Q3 2013 |
| CAKE | $11.4M | 2.33% | 0.46% | -0.3% | Q4 2017 |
| CARG | $10.4M | 2.11% | Not reported | -0.6% | Q3 2022 |
| GNRC | $10.3M | 2.10% | 0.13% | -2.5% | Q2 2013 |
| AMPL | $8.09M | 1.65% | Not reported | +36.8% | Q3 2025 |
| HZO | $7.8M | 1.59% | 1.46% | +23.2% | Q3 2025 |
| TMCI | $7.62M | 1.55% | 4.88% | +37.7% | Q2 2024 |
| VERX | $7.28M | 1.48% | 1.38% | -3.7% | Q4 2023 |
| CMG | $5.81M | 1.18% | 0.01% | +30.4% | Q2 2016 |
| PRLB | $5.64M | 1.15% | 0.47% | +2.6% | Q1 2019 |
| DV | $5.62M | 1.15% | 0.30% | -27.7% | Q4 2023 |
| CELC | $5.33M | 1.08% | 0.11% | -1.0% | Q3 2017 |
| CTRE | $4.81M | 0.98% | 0.06% | -1.9% | Q2 2018 |
| KLTR | $4.69M | 0.96% | 1.94% | -0.9% | Q2 2023 |
| QDEL | $4.55M | 0.93% | 0.23% | +29.9% | Q4 2017 |
| AOSL | $4.27M | 0.87% | 0.73% | +0.1% | Q2 2013 |
| ICUI | $4.15M | 0.84% | 0.12% | +1.1% | Q1 2023 |
| WCPRF | $4.08M | 0.83% | Not reported | -0.1% | Q1 2025 |
| PNTG | $3.87M | 0.79% | 0.40% | -2.9% | Q4 2019 |
 NVDA | $3.83M | 0.78% | 0.00% | -0.3% | Q4 2019 |
| OSUR | $3.8M | 0.77% | 2.23% | -1.6% | Q3 2021 |
| ASPN | $3.21M | 0.65% | 1.37% | -35.4% | Q1 2018 |
 TPR | $2.74M | 0.56% | 0.01% | 0.0% | Q4 2017 |
| PTEN | $2.16M | 0.44% | 0.09% | +69.0% | Q3 2023 |
| CNF | $1.92M | 0.39% | 0.20% | -0.1% | Q4 2018 |
| NCNO | $1.88M | 0.38% | 0.06% | +92.1% | Q4 2024 |
| MCHP | $1.73M | 0.35% | 0.01% | +0.5% | Q2 2013 |
| GNL | $1.47M | 0.30% | 0.08% | -12.0% | Q3 2023 |
| GNTX | $1.3M | 0.26% | 0.03% | +0.8% | Q2 2013 |
| SAM | $1.24M | 0.25% | Not reported | -70.5% | Q2 2022 |
| SLG | $1.19M | 0.24% | 0.04% | -0.6% | Q3 2020 |
| PFE | $1.1M | 0.22% | 0.00% | +2.8% | Q2 2016 |
| FLG | $943K | 0.19% | 0.02% | -0.1% | Q2 2024 |
 XOM | $864K | 0.18% | 0.00% | -0.7% | Q3 2015 |
| Q3 2025 | |||||
| AL | $38.5M | 7.73% | 0.54% | -17.8% | Q2 2013 |
| ENSG | $31.6M | 6.34% | 0.32% | -12.4% | Q2 2018 |
| WGS | $29M | 5.82% | 0.93% | -0.8% | Q3 2021 |
| AMRC | $28.9M | 5.79% | Not reported | -1.3% | Q3 2013 |
| CDNA | $25.1M | 5.04% | 3.36% | +11.7% | Q3 2014 |
| FRSH | $22M | 4.41% | 1.21% | +101.8% | Q3 2021 |
| ISRG | $19.4M | 3.89% | 0.01% | -19.4% | Q2 2018 |
| EPD | $16.5M | 3.32% | 0.02% | +8.4% | Q4 2017 |
| TMCI | $15.2M | 3.04% | 3.57% | +0.4% | Q2 2024 |
| BL | $14.8M | 2.97% | 0.47% | +10.6% | Q3 2018 |
| BLFS | $13.7M | 2.74% | 1.12% | -0.8% | Q2 2020 |
| EQIX | $13.5M | 2.71% | 0.02% | -0.8% | Q2 2013 |
| NVGS | $13.4M | 2.69% | 1.29% | -0.6% | Q1 2015 |
| GNRC | $13M | 2.60% | 0.13% | +13.7% | Q2 2013 |
| CAKE | $12.4M | 2.49% | 0.46% | -11.3% | Q4 2017 |
| ASPN | $12.2M | 2.45% | 2.13% | -7.6% | Q1 2018 |
| PCRX | $11.6M | 2.32% | 1.05% | +22.1% | Q2 2019 |
| CARG | $10.1M | 2.03% | Not reported | -16.2% | Q3 2022 |
| KMX | $10.1M | 2.03% | 0.15% | +38.1% | Q3 2013 |
| EXK | $9.82M | 1.97% | 0.07% | -35.6% | Q1 2023 |
| VERX | $9.39M | 1.88% | 1.44% | +40.3% | Q4 2023 |
| PROF | $8.47M | 1.70% | 5.74% | -1.0% | Q4 2019 |
| DV | $8.15M | 1.63% | 0.42% | +86.3% | Q4 2023 |
| FIVN | $7.25M | 1.45% | 0.38% | -26.5% | Q2 2016 |
| HZO | $6.62M | 1.33% | 1.20% | New | Q3 2025 |
 PSIX | $6.36M | 1.28% | 0.28% | -81.0% | Q3 2013 |
| AOSL | $6.02M | 1.21% | 0.72% | -0.3% | Q2 2013 |
| AMPL | $5.48M | 1.10% | Not reported | New | Q3 2025 |
| PRLB | $5.44M | 1.09% | 0.46% | -5.1% | Q1 2019 |
| OSUR | $5.12M | 1.03% | 2.21% | -0.6% | Q3 2021 |
| CMG | $4.72M | 0.95% | 0.01% | -17.9% | Q2 2016 |
| CTRE | $4.71M | 0.94% | 0.06% | -9.9% | Q2 2018 |
| SAM | $4.55M | 0.91% | Not reported | -14.1% | Q2 2022 |
| KLTR | $4.16M | 0.83% | 1.86% | +32.6% | Q2 2023 |
| NVDA | $3.84M | 0.77% | 0.00% | -1.4% | Q4 2019 |
| WCPRF | $3.71M | 0.74% | Not reported | -0.3% | Q1 2025 |
| QDEL | $3.61M | 0.72% | 0.18% | +68.1% | Q4 2017 |
| PNTG | $3.57M | 0.72% | 0.41% | -6.5% | Q4 2019 |
| ICUI | $3.45M | 0.69% | 0.12% | -11.0% | Q1 2023 |
| CELC | $2.67M | 0.53% | 0.12% | -0.1% | Q3 2017 |
| TPR | $2.43M | 0.49% | 0.01% | -8.4% | Q4 2017 |
| MCHP | $1.74M | 0.35% | 0.01% | -1.5% | Q2 2013 |
| GNL | $1.58M | 0.32% | 0.09% | +83.6% | Q3 2023 |
| GNTX | $1.56M | 0.31% | 0.03% | -2.2% | Q2 2013 |
| SLG | $1.55M | 0.31% | 0.04% | -0.7% | Q3 2020 |
| CNF | $1.33M | 0.27% | 0.20% | +63.8% | Q4 2018 |
| PFE | $1.1M | 0.22% | 0.00% | -0.2% | Q2 2016 |
| PTEN | $1.08M | 0.22% | 0.06% | +2.1% | Q3 2023 |
| NCNO | $1.04M | 0.21% | 0.03% | +4.2% | Q4 2024 |
| T | $958K | 0.19% | 0.00% | +19.6% | Q1 2018 |