Gagnon Securities Llc Portfolio Stock Holdings
According to the SEC 13F filed on August 5, 2026, Gagnon Securities Llc disclosed 78 stock positions valued at approximately $518.83M as of quarter-end June 30, 2026. The largest holdings include CAREDX INC, GENEDX HOLDINGS CORP, and ENSIGN GROUP INC.
- Report Period
- June 30, 2026
- No. of Stocks
- 78
- Portfolio Value
- $518.83M
Holdings by Sector
Gagnon Securities Llc Portfolio Holdings in Q2 2026
| Company | Symbol | Sector | Portfolio % | Shares | Change (Shares) | Change % | Value |
|---|---|---|---|---|---|---|---|
| CAREDX INC | CDNA | Healthcare | 9.73% | 1,770,735 | +8,861 | +0.50% | $50,465,960 |
| GENEDX HOLDINGS CORP | WGS | Healthcare | 6.94% | 524,865 | +221,716 | +73.14% | $36,031,982 |
| ENSIGN GROUP INC | ENSG | Healthcare | 5.37% | 173,911 | -5,760 | -3.21% | $27,877,933 |
| AMERESCO INC | AMRC | Industrials | 4.40% | 826,562 | -13,501 | -1.61% | $22,813,111 |
| GENERAC HLDGS INC | GNRC | Industrials | 4.13% | 73,170 | -1,743 | -2.33% | $21,424,908 |
| ENTERPRISE PRODS PARTNERS L P | EPD | Energy | 3.62% | 510,576 | -3,681 | -0.72% | $18,768,774 |
| QUIDELORTHO CORP | QDEL | Healthcare | 3.48% | 1,030,371 | +627,046 | +155.47% | $18,046,948 |
| CHEESECAKE FACTORY INC | CAKE | Consumer Cyclical | 3.40% | 221,792 | -3,256 | -1.45% | $17,641,336 |
| EQUINIX INC | EQIX | Real Estate | 3.36% | 16,720 | -231 | -1.36% | $17,428,761 |
| CARMAX INC | KMX | Consumer Cyclical | 3.32% | 325,410 | +15,711 | +5.07% | $17,210,935 |
| FRESHWORKS INC | FRSH | Technology | 3.05% | 1,563,866 | -167,501 | -9.67% | $15,826,324 |
| PACIRA BIOSCIENCES INC | PCRX | Healthcare | 2.98% | 608,617 | -8,893 | -1.44% | $15,440,613 |
| FIVE9 INC | FIVN | Technology | 2.97% | 722,698 | +100,634 | +16.18% | $15,407,921 |
| HINGE HEALTH INC | HNGE | Healthcare | 2.93% | 182,959 | +58,709 | +47.25% | $15,185,597 |
| BIOLIFE SOLUTIONS INC | BLFS | Healthcare | 2.92% | 535,906 | -606 | -0.11% | $15,133,985 |
| PROFOUND MED CORP | PROF | Healthcare | 2.51% | 1,960,074 | +15,750 | +0.81% | $13,034,492 |
| CARGURUS INC | CARG | Consumer Cyclical | 2.41% | 367,073 | +95,549 | +35.19% | $12,513,519 |
| TREACE MED CONCEPTS INC | TMCI | Healthcare | 2.32% | 3,029,543 | -2,172,343 | -41.76% | $12,057,581 |
| INTUITIVE SURGICAL INC | ISRG | Healthcare | 2.23% | 29,144 | -2,475 | -7.83% | $11,589,991 |
| BLACKLINE INC | BL | Technology | 2.03% | 375,769 | +79,345 | +26.77% | $10,547,836 |
| ASPEN AEROGELS INC | ASPN | Industrials | 1.88% | 1,535,812 | -326,039 | -17.51% | $9,737,048 |
| PROTO LABS INC | PRLB | Industrials | 1.83% | 116,283 | +5,394 | +4.86% | $9,478,227 |
| VERTEX INC | VERX | Technology | 1.68% | 761,026 | +292,806 | +62.54% | $8,736,578 |
| AMPLITUDE INC | AMPL | Technology | 1.56% | 1,055,508 | -4,328 | -0.41% | $8,074,636 |
| MarineMax Inc | HZO | Consumer Cyclical | 1.49% | 211,480 | -9,130 | -4.14% | $7,744,398 |
| OraSure Technologies Inc | OSUR | Healthcare | 1.37% | 1,592,147 | -122,244 | -7.13% | $7,100,976 |
| DOUBLEVERIFY HLDGS INC | DV | Technology | 1.09% | 523,328 | +34,866 | +7.14% | $5,672,876 |
| CELCUITY INC | CELC | Healthcare | 1.07% | 53,240 | -102 | -0.19% | $5,569,969 |
| CHIPOTLE MEXICAN GRILL INC | CMG | Consumer Cyclical | 1.02% | 155,463 | -2,386 | -1.51% | $5,285,742 |
| CARETRUST REIT INC | CTRE | Real Estate | 1.01% | 129,955 | -3,091 | -2.32% | $5,243,684 |
Showing 30 of 78 holdings in the latest reporting period.