GS
Gagnon Securities LLC SEC 13F Filing (Q2 2026) — Holdings & Portfolio
Gagnon Securities LLCCIK: 0001125725
Diversified strategyMomentum followerQuality / disciplined sizing
Total reported value
$507.1M
Reporting period: 2026-06-30 · Number of holdings: 83
GAGNON SECURITIES LLC disclosed 83 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $507.1M and a quarterly turnover rate of 37.2%.
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Personality snowflake
- Concentration
- 15.18
- Portfolio Stability
- 37.18
- Momentum
- 100
- Sector conviction
- 53.96
- Diversification
- 100
- Sizing Uniformity
- 85.38
Gagnon Securities LLC's disclosed holdings carry a Herfindahl concentration index of 0.038 — mathematically equivalent to about 26 equally-sized positions, well below its 83 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 1.46), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 40% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govSold out NVGS
Add CDNA
+0.5% $19.9M
Trim ENSG
-3.2% -$8.3M
Add WGS
+73.1% $16.6M
Sold out SGOV
Add QDEL
+155.5% $11.4M
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
Showing top 82 holdings (of 83 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | CDNA | Caredx Inc | Stock-Other | 9.95% | +2.89% | +0.50% | |
| 2 | WGS | Genedx Holdings CORP | Stock-Other | 7.11% | +2.62% | +73.14% | |
| 3 | ENSG | Ensign Group Inc/the | Stock-Healthcare | 5.50% | -2.86% | -3.21% | |
| 4 | AMRC | Ameresco Inc-cl A | Stock-Other | 4.50% | -0.44% | -1.61% | |
| 5 | GNRC | Generac Holdings Inc | Stock-Industrials | 4.22% | +0.84% | -2.33% | |
| 6 | EPD | Enterprise Products Partners | Stock-Energy | 3.70% | -0.79% | -0.72% | |
| 7 | QDEL | Quidelortho CORP | Stock-Other | 3.56% | +2.03% | +155.47% | |
| 8 | CAKE | Cheesecake Factory Inc/the | Stock-Consumer Disc | 3.48% | +0.64% | -1.45% | |
| 9 | EQIX | Equinix Inc | Stock-Real Estate | 3.44% | -0.40% | -1.36% | |
| 10 | KMX | Carmax Inc | Stock-Consumer Disc | 3.39% | +0.42% | +5.07% | |
| 11 | FRSH | Freshworks Inc-cl A | Stock-Other | 3.12% | -0.09% | -9.67% | |
| 12 | PCRX | Pacira Biosciences Inc | Stock-Other | 3.04% | -0.18% | -1.44% | |
| 13 | FIVN | Five9 Inc | Stock-Tech | 3.04% | +0.86% | +16.18% | |
| 14 | HNGE | Hinge Health Inc-a | Stock-Other | 2.99% | +1.88% | +47.25% | |
| 15 | BLFS | Biolife Solutions Inc | Stock-Other | 2.98% | +0.62% | -0.11% | |
| 16 | PROF | Profound Medical CORP | Stock-Other | 2.57% | -0.34% | +0.81% | |
| 17 | CARG | Cargurus Inc | Stock-Consumer Disc | 2.47% | +0.34% | +35.19% | |
| 18 | TMCI | Treace Medical Concepts Inc | Stock-Other | 2.38% | +0.77% | -41.76% | |
| 19 | ISRG | Intuitive Surgical Inc | Stock-Healthcare | 2.29% | -1.07% | -7.83% | |
| 20 | BL | Blackline Inc | Stock-Tech | 2.08% | -0.45% | +26.77% | |
| 21 | ASPN | Aspen Aerogels Inc | Stock-Other | 1.92% | +0.45% | -17.51% | |
| 22 | PRLB | Proto Labs Inc | Stock-Other | 1.87% | +0.41% | +4.86% | |
| 23 | VERX | Vertex Inc - Class A | Stock-Other | 1.72% | +0.43% | +62.54% | |
| 24 | AMPL | Amplitude Inc-class A | Stock-Other | 1.59% | -0.08% | -0.41% | |
| 25 | HZO | Marinemax Inc | Stock-Other | 1.53% | +0.15% | -4.14% | |
| 26 | OSUR | Orasure Technologies Inc | Stock-Other | 1.40% | +0.21% | -7.13% | |
| 27 | DV | Doubleverify Holdings Inc | Stock-Other | 1.12% | +0.05% | +7.14% | |
| 28 | CELC | Celcuity Inc | Stock-Other | 1.10% | -0.31% | -0.19% | |
| 29 | CMG | Chipotle Mexican Grill Inc | Stock-Consumer Disc | 1.04% | -0.13% | -1.51% | |
| 30 | CTRE | Caretrust Reit Inc | Stock-Real Estate | 1.03% | -0.10% | -2.32% | |
| 31 | PNTG | Pennant Group Inc/the | Stock-Other | 0.98% | +0.01% | -1.78% | |
| 32 | WCPRF | Whitecap Resources Inc | Stock-Other | 0.89% | -0.24% | -0.07% | |
| 33 | ICUI | Icu Medical Inc | Stock-Other | 0.85% | -0.04% | -1.15% | |
| 34 | KLTR | Kaltura Inc | Stock-Other | 0.84% | -0.08% | -0.36% | |
| 35 | MCHP | Microchip Technology Inc | Stock-Tech | 0.47% | +0.07% | -2.27% | |
| 36 | GNTX | Gentex CORP | Stock-Consumer Disc | 0.28% | -0.01% | +0.40% | |
| 37 | GNL | Global Net Lease Inc | Stock-Real Estate | 0.28% | -0.09% | -5.60% | |
| 38 | SLG | Sl Green Realty CORP | Stock-Real Estate | 0.26% | +0.04% | — | |
| 39 | SAM | Boston Beer Company Inc-a | Stock-Consumer Staples | 0.25% | -0.13% | +0.61% | |
| 40 | NCNO | Ncino Inc | Stock-Other | 0.24% | -0.04% | -5.27% | |
| 41 | FLG | Flagstar Bank NA | Stock-Financials | 0.22% | -0.01% | -0.34% | |
| 42 | APPS | Digital Turbine Inc | Stock-Other | 0.21% | +0.16% | — | |
| 43 | WEAV | Weave Communications Inc | Stock-Other | 0.20% | +0.16% | +359.29% | |
| 44 | DOCU | Docusign Inc | Stock-Tech | 0.18% | -0.05% | -1.54% | |
| 45 | CNF | Cnfinance Holdings LTD | Stock-Other | 0.18% | -0.10% | +5.86% | |
| 46 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 0.18% | +0.01% | — | |
| 47 | MRVL | Marvell Technology Inc | Stock-Tech | 0.17% | +0.01% | -57.17% | |
| 48 | TECH | Bio-techne CORP | Stock-Healthcare | 0.17% | +0.05% | +23.80% | |
| 49 | DVN | Devon Energy CORP | Stock-Energy | 0.15% | -0.06% | -0.24% | |
| 50 | MU | Micron Technology Inc | Stock-Tech | 0.15% | +0.07% | -36.95% |
1–50 of 82
* This report is exclusively curated by the AlphaSMO team. AlphaSMO is the web's most authoritative 13F / Inside Trader database, delivering precise insider trading and institutional holdings insights.
Portfolio Performance
Performance for Q3 2026
+14.9%
Performance Last 4 Quarters
+27.3%
- Stdev
- +20.8%
- Beta
- +1.39
- Alpha
- -3%
- Max Drawdown
- -19.8%
- Annualized Perf
- +28.1%
- Batting Avg vs S&P
- +55.6%
- Sortino
- +2.45
- Stutzer
- +0.38
- Treynor
- +0.19
- Sterling
- +1.25
- Calmar
- +1.42
- Information Ratio
- +0.44
- Tracking Error
- +12.5%
- Stdev Down
- +11.1%
- Winning Months %
- +66.7%
- Losing Months %
- +33.3%
- Best 12 Months
- +57.7%
- Worst 12 Months
- +1.3%
- Efficiency Ratio
- +0.58
- Sharpe
- +1.31
- Stdev Sectors
- +8.7%
- Skewness
- -0.26
- Kurtosis
- -0.68
- Upside Potential
- +4.09
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 83 | $507.1M | 37 | ||
| 2026 Q1 | 85 | $433.2M | 33 | ||
| 2025 Q4 | 86 | $491.1M | 23 | ||
| 2025 Q3 | 86 | $498.5M | 33 | ||
| 2025 Q2 | 87 | $492.4M | 0 | ||
| 2025 Q1 | 98 | $454.5M | 100 | ||
| 2024 Q4 | 91 | $496.3M | 0 | ||
| 2024 Q3 | 102 | $504.4M | 0 | ||
| 2024 Q2 | 97 | $444.0M | 0 | ||
| 2024 Q1 | 98 | $422.5M | 0 | ||
| 2023 Q4 | 102 | $416.6M | 0 | ||
| 2023 Q3 | 97 | $399.1M | 0 | ||
| 2023 Q2 | 97 | $480.9M | 0 | ||
| 2023 Q1 | 112 | $475.8M | 0 | ||
| 2022 Q4 | 106 | $452.9M | 0 | ||
| 2022 Q3 | 101 | $454.8M | 0 | ||
| 2022 Q2 | 101 | $477.1M | 0 | ||
| 2022 Q1 | 103 | $613.2M | 0 | ||
| 2021 Q4 | 105 | $666.8M | 0 | ||
| 2021 Q3 | 112 | $673.1M | 0 | ||
| 2021 Q2 | 111 | $704.3M | 97 | ||
| 2021 Q1 | 108 | $656.7M | 31 | ||
| 2020 Q4 | 99 | $628.1M | 34 | ||
| 2020 Q3 | 100 | $469.0M | 20 | ||
| 2020 Q2 | 91 | $413.0M | 38 | ||
| 2020 Q1 | 96 | $294.3M | 48 | ||
| 2019 Q4 | 93 | $456.9M | 25 | ||
| 2019 Q3 | 95 | $422.6M | 18 | ||
| 2019 Q2 | 97 | $463.8M | 21 | ||
| 2019 Q1 | 97 | $458.7M | 32 | ||
| 2018 Q4 | 93 | $376.0M | 27 | ||
| 2018 Q3 | 101 | $435.1M | 35 | ||
| 2018 Q2 | 97 | $346.7M | 40 | ||
| 2018 Q1 | 95 | $280.9M | 17 | ||
| 2017 Q4 | 91 | $281.8M | 23 | ||
| 2017 Q3 | 95 | $269.0M | 61 | ||
| 2017 Q2 | 89 | $360.5M | 75 | ||
| 2017 Q1 | 95 | $231.2M | 18 | ||
| 2016 Q4 | 96 | $233.1M | 31 | ||
| 2016 Q3 | 97 | $235.0M | 55 | ||
| 2016 Q2 | 92 | $214.4M | 40 | ||
| 2016 Q1 | 88 | $208.9M | 25 | ||
| 2015 Q4 | 86 | $218.4M | 16 | ||
| 2015 Q3 | 88 | $204.4M | 28 | ||
| 2015 Q2 | 89 | $252.8M | 27 | ||
| 2015 Q1 | 93 | $301.4M | 24 | ||
| 2014 Q4 | 95 | $311.9M | 40 | ||
| 2014 Q3 | 99 | $299.3M | 24 | ||
| 2014 Q2 | 106 | $308.9M | 34 | ||
| 2014 Q1 | 104 | $336.6M | 34 | ||
| 2013 Q4 | 98 | $333.1M | 37 | ||
| 2013 Q3 | 96 | $320.7M | 55 | ||
| 2013 Q2 | 84 | $276.2M | 0 |
Holding changes this quarter
Gagnon Securities LLC's most significant position changes for 2026-06-30: Sold out: Navigator Holdings Ltd. (NVGS); Sold out: Ishares 0-3 Month Treasury B (SGOV); Sold out: Alphabet Inc. (GOOG); Sold out: Gambling.com Group Limited (GAMB); New buy: Warby Parker Inc-class A (WRBY).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | CDNA | Caredx Inc | +2.9% | +0.50% | Add |
| 2 | WGS | Genedx Holdings CORP | +2.6% | +73.14% | Add |
| 3 | QDEL | Quidelortho CORP | +2% | +155.47% | Add |
| 4 | HNGE | Hinge Health Inc-a | +1.9% | +47.25% | Add |
| 5 | FIVN | Five9 Inc | +0.9% | +16.18% | Add |
| 6 | GNRC | Generac Holdings Inc | +0.8% | -2.33% | Trim |
| 7 | TMCI | Treace Medical Concepts Inc | +0.8% | -41.76% | Trim |
| 8 | CAKE | Cheesecake Factory Inc/the | +0.6% | -1.45% | Trim |
| 9 | BLFS | Biolife Solutions Inc | +0.6% | -0.11% | Trim |
| 10 | ASPN | Aspen Aerogels Inc | +0.5% | -17.51% | Trim |
| 11 | VERX | Vertex Inc - Class A | +0.4% | +62.54% | Add |
| 12 | KMX | Carmax Inc | +0.4% | +5.07% | Add |
| 13 | PRLB | Proto Labs Inc | +0.4% | +4.86% | Add |
| 14 | CARG | Cargurus Inc | +0.3% | +35.19% | Add |
| 15 | OSUR | Orasure Technologies Inc | +0.2% | -7.13% | Trim |
| 16 | WEAV | Weave Communications Inc | +0.2% | +359.29% | Add |
| 17 | APPS | Digital Turbine Inc | +0.2% | — | Unchanged |
| 18 | HZO | Marinemax Inc | +0.2% | -4.14% | Trim |
| 19 | MCHP | Microchip Technology Inc | +0.1% | -2.27% | Trim |
| 20 | MU | Micron Technology Inc | +0.1% | -36.95% | Trim |
| 21 | WRBY | Warby Parker Inc-class A | +0.1% | NEW | New buy |
| 22 | CVLT | Commvault Systems Inc | +0.1% | +11.38% | Add |
| 23 | VCEL | Vericel CORP | +0.1% | NEW | New buy |
| 24 | BYND 0 03-15-27Bond | Beyond Meat Inc | +0.1% | NEW | New buy |
| 25 | DV | Doubleverify Holdings Inc | +0.1% | +7.14% | Add |
| 26 | TECH | Bio-techne CORP | +0.1% | +23.80% | Add |
| 27 | SLG | Sl Green Realty CORP | 0% | — | Unchanged |
| 28 | HIMX | Himax Technologies Inc-adr | 0% | -11.78% | Trim |
| 29 | CGNX | Cognex CORP | 0% | +0.18% | Add |
| 30 | LTH | Life Time Group Holdings Inc | 0% | -0.63% | Trim |
| 31 | ONTO | Onto Innovation Inc | 0% | -23.77% | Trim |
| 32 | ETSY | Etsy Inc | 0% | -0.31% | Trim |
| 33 | PNTG | Pennant Group Inc/the | 0% | -1.78% | Trim |
| 34 | MRVL | Marvell Technology Inc | 0% | -57.17% | Trim |
| 35 | GOOGL | Alphabet Inc-cl A | 0% | — | Unchanged |
| 36 | GOOG | Alphabet Inc-cl C | — | -0.26% | Trim |
| 37 | ELVA | Electrovaya Inc | — | +0.19% | Add |
| 38 | SBUX | Starbucks CORP | — | -0.64% | Trim |
| 39 | PL | Planet Labs Pbc | — | — | Unchanged |
| 40 | RNG | Ringcentral Inc-class A | — | +1.13% | Add |
| 41 | RMBS | Rambus Inc | — | -34.68% | Trim |
| 42 | GNTX | Gentex CORP | 0% | +0.40% | Add |
| 43 | FLG | Flagstar Bank NA | 0% | -0.34% | Trim |
| 44 | NVDA | Nvidia CORP | 0% | -4.30% | Trim |
| 45 | AKAM | Akamai Technologies Inc | 0% | +9.22% | Add |
| 46 | MRK | Merck & Co. Inc. | 0% | -0.16% | Trim |
| 47 | ATNM | Actinium Pharmaceuticals Inc | 0% | -9.52% | Trim |
| 48 | RDHL | Redhill Biopharma Ltd-sp Adr | 0% | — | Unchanged |
| 49 | MSFT | Microsoft CORP | 0% | +2.02% | Add |
| 50 | BX | Blackstone Inc | 0% | — | Unchanged |
1–50 of 88
Filing History
FAQ
What is Gagnon Securities LLC and what type of investor is it?
Gagnon Securities LLC is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $507.1M, spread across 83 disclosed positions.
What are Gagnon Securities LLC's largest equity positions?
Based on the latest 13F filing, Gagnon Securities LLC's top holdings by market value are:
1. Caredx Inc (CDNA) — $50.5M (9.9%)
2. Genedx Holdings CORP (WGS) — $36.0M (7.1%)
3. Ensign Group Inc/the (ENSG) — $27.9M (5.5%)
4. Ameresco Inc-cl A (AMRC) — $22.8M (4.5%)
5. Generac Holdings Inc (GNRC) — $21.4M (4.2%)
What changes did Gagnon Securities LLC make in its most recent portfolio filing?
In the latest reported quarter, Gagnon Securities LLC made 80 notable position adjustments: 3 new positions were initiated, 25 existing holdings were added to, 46 positions were partially reduced, and 6 were completely exited. The largest of these moves: Sold out: Navigator Holdings Ltd. (NVGS); Sold out: Ishares 0-3 Month Treasury B (SGOV); Sold out: Alphabet Inc. (GOOG); Sold out: Gambling.com Group Limited (GAMB); New buy: Warby Parker Inc-class A (WRBY)
What sectors does Gagnon Securities LLC focus on?
Gagnon Securities LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Consumer Discretionary: 26.8%
• Health Care: 20.1%
• Information Technology: 17.7%
• Real Estate: 12.4%
• Industrials: 10.6%
• Energy: 9.6%
Investment Profile
Gagnon Securities LLC returned an annualized 28.1% over the trailing 36 months — underperforming the S&P 500 by 3.0 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.39 (more volatile than the market) and a 56% quarterly batting average against the index.
Its portfolio is broadly diversified and moderately active.
Its turnover score has risen from 0 to 37 over the past 4 quarters — a shift toward more active trading.
It has added to its QDEL position over the past two quarters (+$13.5M, now $18.0M), while trimming ISRG over the same stretch (-$6.4M, still holding $11.6M).
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GA
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BW
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Developer Access
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