CIK: 0001599466
Total reported value
$135.9M
Reporting period: 2026-03-31 · Number of holdings: 22
Gagnon Advisors, LLC disclosed 22 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $135.9M and a quarterly turnover rate of 42.9%.
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Gagnon Advisors, LLC's disclosed holdings carry a Herfindahl concentration index of 0.060 — mathematically equivalent to about 17 equally-sized positions, close to its 22 actual disclosed holdings. Value is spread relatively evenly across the portfolio rather than concentrated in a handful of names.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.58), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
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 2% 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.
Trim WGS
+16.7% -$7.0M
Add EPD
0.0% $2.0M
Add EQIX
0.0% $2.3M
Add NVGS
+4.4% $1.5M
Add PCRX
+35.2% $1.2M
Trim HZO
-50.0% -$2.1M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | EPD | Enterprise Products Partners | Stock-Energy | 9.46% | +2.54% | — | |
| 2 | AMRC | Ameresco Inc-cl A | Stock-Other | 8.87% | +0.08% | — | |
| 3 | EQIX | Equinix INC | Stock-Real Estate | 7.73% | +2.52% | — | |
| 4 | NVGS | Navigator Holdings Ltd. | Stock-Other | 7.68% | +1.99% | +4.41% | |
| 5 | SGOV | Ishares 0-3 Month Treasury B | ETF-Gov Bonds | 7.08% | +7.08% | NEW | |
| 6 | WGS | Genedx Holdings CORP | Stock-Other | 7.00% | -3.49% | +16.66% | |
| 7 | CDNA | Caredx INC | Stock-Other | 6.81% | +0.44% | — | |
| 8 | PCRX | Pacira Biosciences INC | Stock-Other | 5.86% | +1.57% | +35.16% | |
| 9 | PROF | Profound Medical CORP | Stock-Other | 4.59% | -0.22% | — | |
| 10 | FRSH | Freshworks Inc-cl A | Stock-Other | 4.59% | +0.20% | +37.41% | |
| 11 | BLFS | Biolife Solutions INC | Stock-Other | 3.85% | -0.36% | — | |
| 12 | FIVN | Five9 INC | Stock-Tech | 3.75% | -0.53% | — | |
| 13 | BL | Blackline INC | Stock-Tech | 3.54% | -1.02% | — | |
| 14 | AMPL | Amplitude Inc-class A | Stock-Other | 3.19% | -0.17% | +38.88% | |
| 15 | DV | Doubleverify Holdings INC | Stock-Other | 3.06% | -0.12% | — | |
| 16 | OSUR | Orasure Technologies INC | Stock-Other | 2.66% | +0.80% | — | |
| 17 | VERX | Vertex INC - Class A | Stock-Other | 2.60% | -0.35% | +27.77% | |
| 18 | HNGE | Hinge Health Inc-a | Stock-Other | 2.29% | +2.29% | NEW | |
| 19 | GOOG | Alphabet Inc. | Stock-Comm Services | 1.96% | +0.45% | — | |
| 20 | HZO | Marinemax INC | Stock-Other | 1.94% | -1.05% | -50.00% | |
| 21 | KLTR | Kaltura INC | Stock-Other | 1.27% | -0.20% | — | |
| 22 | CNF | Cnfinance Holdings LTD | Stock-Other | 0.23% | -0.08% | — |
Performance for Q3 2026
+6.3%
Performance Last 4 Quarters
+19.5%
Based on 79% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 22 | $135.9M | 43 | |
| 2025-12-31 | 23 | $157.5M | 24 | |
| 2025-09-30 | 24 | $162.0M | 55 | |
| 2025-06-30 | 24 | $148.8M | 0 | |
| 2025-03-31 | 28 | $141.8M | 100 | |
| 2024-12-31 | 26 | $156.2M | 0 | |
| 2024-09-30 | 27 | $154.8M | 0 | |
| 2024-06-30 | 27 | $131.3M | 0 | |
| 2024-03-31 | 27 | $115.3M | 0 | |
| 2023-12-31 | 26 | $114.5M | 0 | |
| 2023-09-30 | 28 | $119.5M | 0 | |
| 2023-06-30 | 29 | $149.4M | 0 | |
| 2023-03-31 | 28 | $149.0M | 0 | |
| 2022-12-31 | 29 | $148.2M | 0 | |
| 2022-09-30 | 32 | $154.4M | 0 | |
| 2022-06-30 | 33 | $165.1M | 0 | |
| 2022-03-31 | 33 | $217.1M | 0 | |
| 2021-12-31 | 34 | $251.7M | 0 | |
| 2021-09-30 | 35 | $252.1M | 0 | |
| 2021-06-30 | 32 | $263.1M | 0 | |
| 2021-03-31 | 30 | $242.9M | 96 | |
| 2020-12-31 | 29 | $222.5M | 39 | |
| 2020-09-30 | 30 | $162.9M | 24 | |
| 2020-06-30 | 26 | $138.9M | 34 | |
| 2020-03-31 | 27 | $107.2M | 58 | |
| 2019-12-31 | 32 | $178.4M | 25 | |
| 2019-09-30 | 32 | $161.3M | 21 | |
| 2019-06-30 | 33 | $175.2M | 22 | |
| 2019-03-31 | 33 | $174.8M | 38 | |
| 2018-12-31 | 31 | $142.3M | 32 | |
| 2018-09-30 | 30 | $166.9M | 28 | |
| 2018-06-30 | 29 | $158.0M | 29 | |
| 2018-03-31 | 31 | $134.4M | 19 | |
| 2017-12-31 | 30 | $136.4M | 22 | |
| 2017-09-30 | 29 | $132.0M | 25 | |
| 2017-06-30 | 27 | $115.9M | 26 | |
| 2017-03-31 | 27 | $109.8M | 23 | |
| 2016-12-31 | 27 | $121.0M | 26 | |
| 2016-09-30 | 28 | $126.6M | 43 | |
| 2016-06-30 | 26 | $118.3M | 47 | |
| 2016-03-31 | 23 | $113.4M | 31 | |
| 2015-12-31 | 23 | $135.1M | 17 | |
| 2015-09-30 | 23 | $122.9M | 28 | |
| 2015-06-30 | 23 | $146.1M | 26 | |
| 2015-03-31 | 24 | $170.6M | 19 | |
| 2014-12-31 | 23 | $166.1M | 32 | |
| 2014-09-30 | 26 | $161.8M | 24 | |
| 2014-06-30 | 24 | $160.0M | 32 | |
| 2014-03-31 | 28 | $176.5M | 35 | |
| 2013-12-31 | 28 | $172.8M | 0 |
Gagnon Advisors, LLC's most significant position changes for 2026-03-31: Sold out: Air Lease CORP (AL); New buy: Ishares 0-3 Month Treasury B (SGOV); Sold out: Treace Medical Concepts INC (TMCI); New buy: Hinge Health Inc-a (HNGE); Sold out: Nvidia CORP (NVDA).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | EPD | Enterprise Products Partners | +2.5% | — | Unchanged |
| 2 | EQIX | Equinix INC | +2.5% | — | Unchanged |
| 3 | NVGS | Navigator Holdings Ltd. | +2% | +4.41% | Add |
| 4 | PCRX | Pacira Biosciences INC | +1.6% | +35.16% | Add |
| 5 | OSUR | Orasure Technologies INC | +0.8% | — | Unchanged |
| 6 | GOOG | Alphabet Inc. | +0.5% | — | Unchanged |
| 7 | CDNA | Caredx INC | +0.4% | — | Unchanged |
| 8 | FRSH | Freshworks Inc-cl A | +0.2% | +37.41% | Add |
| 9 | AMRC | Ameresco Inc-cl A | +0.1% | — | Unchanged |
| 10 | CNF | Cnfinance Holdings LTD | -0.1% | — | Unchanged |
| 11 | DV | Doubleverify Holdings INC | -0.1% | — | Unchanged |
| 12 | AMPL | Amplitude Inc-class A | -0.2% | +38.88% | Add |
| 13 | KLTR | Kaltura INC | -0.2% | — | Unchanged |
| 14 | PROF | Profound Medical CORP | -0.2% | — | Unchanged |
| 15 | VERX | Vertex INC - Class A | -0.4% | +27.77% | Add |
| 16 | BLFS | Biolife Solutions INC | -0.4% | — | Unchanged |
| 17 | FIVN | Five9 INC | -0.5% | — | Unchanged |
| 18 | BL | Blackline INC | -1% | — | Unchanged |
| 19 | HZO | Marinemax INC | -1.1% | -50.00% | Trim |
| 20 | WGS | Genedx Holdings CORP | -3.5% | +16.66% | Add |
| 21 | AL | Air Lease CORP | — | EXIT | Sold out |
| 22 | SGOV | Ishares 0-3 Month Treasury B | — | NEW | New buy |
| 23 | TMCI | Treace Medical Concepts INC | — | EXIT | Sold out |
| 24 | HNGE | Hinge Health Inc-a | — | NEW | New buy |
| 25 | NVDA | Nvidia CORP | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-04-22 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-13 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-03 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-07-23 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-12 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-01-24 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-12 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-14 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-13 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-14 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-14 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-08 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-04-10 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-07 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-01 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-09 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-08 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-12 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-07-28 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-07-28 | Amendment | View on EDGAR |
| 2021-03-31 | 2021-05-14 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-12 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-12 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-14 | Amendment | View on EDGAR |
| 2020-06-30 | 2020-08-13 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-11 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-14 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-08 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-08-12 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-13 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-01-18 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-11-13 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-09 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-09 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-13 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-14 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-07-20 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-11 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-14 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-14 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-24 | Amendment | View on EDGAR |
| 2016-06-30 | 2016-08-10 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-03 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-16 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-10-16 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-07-24 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-12 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-02-13 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-10-15 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-07-31 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-06 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-06 | 13F-HR | View on EDGAR |
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