2026 Q2 Portfolio Activity
In 2026 Q2, GAGNON SECURITIES LLC maintained a portfolio of 89 distinct positions. The most significant new addition was GAMBLING COM GROUP, now representing 2.25% of the total fund value. They heavily accumulated shares in GENEDX HOLDINGS CORP, increasing the position by 73.1%. Conversely, GAGNON SECURITIES LLC completely exited their position in NAVIGATOR HLDGS LTD.
Position History
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Total Positions
89
Quarter
2026 Q2
Top Holding
CDNA (9.7%)
Top 10 Concentration
47.7%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 89
GAGNON SECURITIES LLC Full Holdings List — 2026 Q2
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
CDNA
CAREDX INC
|
Healthcare | 9.73% | 7.06% |
#1
1
Prev: #2
|
6.4 |
—
|
8,861 | 0.5% |
P
S
|
1,770,735 | $50,465,960 |
$11.01
+327.0%
|
2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | ||
|
WGS
GENEDX HOLDINGS...
|
Healthcare | 6.94% | 4.49% |
#2
2
Prev: #4
|
7.3 |
—
|
221,716 | 73.1% |
P
S
|
524,865 | $36,031,982 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
ENSG
ENSIGN GROUP IN...
|
Healthcare | 5.37% | 8.36% |
#3
2
Prev: #1
|
3.6 |
—
|
-5,760 | -3.2% |
P
S
|
173,911 | $27,877,933 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
AMRC
AMERESCO INC
|
Industrials | 4.40% | 4.94% |
#4
1
Prev: #3
|
2.8 |
—
|
-13,501 | -1.6% |
P
S
|
826,562 | $22,813,111 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
GNRC
GENERAC HLDGS I...
|
Industrials | 4.13% | 3.38% |
#5
3
Prev: #8
|
2.7 |
—
|
-1,743 | -2.3% |
P
S
|
73,170 | $21,424,908 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
EPD
ENTERPRISE PROD...
|
Energy | 3.62% | 4.49% |
#6
1
Prev: #5
|
1.9 |
—
|
-3,681 | -0.7% |
P
S
|
510,576 | $18,768,774 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
QDEL
QUIDELORTHO COR...
|
Healthcare | 3.48% | 1.53% |
#7
15
Prev: #22
|
4.4 |
—
|
627,046 | 155.5% |
P
S
|
1,030,371 | $18,046,948 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
CAKE
CHEESECAKE FACT...
|
Consumer Cyclical | 3.40% | 2.84% |
#8
6
Prev: #14
|
1.9 |
—
|
-3,256 | -1.4% |
P
S
|
221,792 | $17,641,336 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
EQIX
EQUINIX INC
|
Real Estate | 3.36% | 3.84% |
#9
2
Prev: #7
|
1.8 |
—
|
-231 | -1.4% |
P
S
|
16,720 | $17,428,761 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
KMX
CARMAX INC
|
Consumer Cyclical | 3.32% | 2.97% |
#10
2
Prev: #12
|
3.3 |
—
|
15,711 | 5.1% |
P
S
|
325,410 | $17,210,935 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
FRSH
FRESHWORKS INC
|
Technology | 3.05% | 3.21% |
#11
Prev: #11
|
1.7 |
—
|
-167,501 | -9.7% |
P
S
|
1,563,866 | $15,826,324 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
PCRX
PACIRA BIOSCIEN...
|
Healthcare | 2.98% | 3.22% |
#12
2
Prev: #10
|
1.7 |
—
|
-8,893 | -1.4% |
P
S
|
608,617 | $15,440,613 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
FIVN
FIVE9 INC
|
Technology | 2.97% | 2.18% |
#13
4
Prev: #17
|
3.2 |
—
|
100,634 | 16.2% |
P
S
|
722,698 | $15,407,921 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
HNGE
HINGE HEALTH IN...
|
Healthcare | 2.93% | 1.11% |
#14
18
Prev: #32
|
3.7 |
—
|
58,709 | 47.3% |
P
S
|
182,959 | $15,185,597 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
BLFS
BIOLIFE SOLUTIO...
|
Healthcare | 2.92% | 2.36% |
#15
1
Prev: #16
|
1.7 |
—
|
-606 | -0.1% |
P
S
|
535,906 | $15,133,985 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
PROF
PROFOUND MED CO...
|
Healthcare | 2.51% | 2.91% |
#16
3
Prev: #13
|
1.5 |
—
|
15,750 | 0.8% |
P
S
|
1,960,074 | $13,034,492 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
CARG
CARGURUS INC
|
Consumer Cyclical | 2.41% | 2.13% |
#17
2
Prev: #19
|
3.5 |
—
|
95,549 | 35.2% |
P
S
|
367,073 | $12,513,519 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
TMCI
TREACE MED CONC...
|
Healthcare | 2.32% | 1.61% |
#18
3
Prev: #21
|
0.9 |
—
|
-2,172,343 | -41.8% |
P
S
|
3,029,543 | $12,057,581 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
N/A
GAMBLING COM GR...
|
|
Unknown | 2.25% | — |
#19
Prev: #—
|
4.4 |
—
|
765,179 | — |
NEW
|
765,179 | $11,697,619 | — | 13F Filing | 2026-06-30 | 2026-08-05 | ||
|
ISRG
INTUITIVE SURGI...
|
Healthcare | 2.23% | 3.36% |
#20
11
Prev: #9
|
1.4 |
—
|
-2,475 | -7.8% |
P
S
|
29,144 | $11,589,991 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
BL
BLACKLINE INC
|
Technology | 2.03% | 2.53% |
#21
6
Prev: #15
|
3.3 |
—
|
79,345 | 26.8% |
P
S
|
375,769 | $10,547,836 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
ASPN
ASPEN AEROGELS ...
|
Industrials | 1.88% | 1.47% |
#22
1
Prev: #23
|
1.3 |
—
|
-326,039 | -17.5% |
P
S
|
1,535,812 | $9,737,048 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
PRLB
PROTO LABS INC
|
Industrials | 1.83% | 1.46% |
#23
1
Prev: #24
|
1.2 |
—
|
5,394 | 4.9% |
P
S
|
116,283 | $9,478,227 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
VERX
VERTEX INC
|
Technology | 1.68% | 1.29% |
#24
3
Prev: #27
|
3.7 |
—
|
292,806 | 62.5% |
P
S
|
761,026 | $8,736,578 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
AMPL
AMPLITUDE INC
|
Technology | 1.56% | 1.67% |
#25
5
Prev: #20
|
1.1 |
—
|
-4,328 | -0.4% |
P
S
|
1,055,508 | $8,074,636 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
HZO
MarineMax Inc
|
Consumer Cyclical | 1.49% | 1.38% |
#26
Prev: #26
|
1.1 |
—
|
-9,130 | -4.1% |
P
S
|
211,480 | $7,744,398 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
OSUR
OraSure Technol...
|
Healthcare | 1.37% | 1.19% |
#27
1
Prev: #28
|
1.0 |
—
|
-122,244 | -7.1% |
P
S
|
1,592,147 | $7,100,976 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
DV
DOUBLEVERIFY HL...
|
Communication Services | 1.09% | 1.07% |
#28
5
Prev: #33
|
2.4 |
—
|
34,866 | 7.1% |
P
S
|
523,328 | $5,672,876 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
CELC
CELCUITY INC
|
Healthcare | 1.07% | 1.41% |
#29
4
Prev: #25
|
0.9 |
—
|
-102 | -0.2% |
P
S
|
53,240 | $5,569,969 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
CMG
CHIPOTLE MEXICA...
|
Consumer Cyclical | 1.02% | 1.17% |
#30
1
Prev: #29
|
0.9 |
—
|
-2,386 | -1.5% |
P
S
|
155,463 | $5,285,742 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
CTRE
CARETRUST REIT ...
|
Real Estate | 1.01% | 1.13% |
#31
Prev: #31
|
0.9 |
—
|
-3,091 | -2.3% |
P
S
|
129,955 | $5,243,684 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
PNTG
PENNANT GROUP I...
|
Healthcare | 0.96% | 0.97% |
#32
2
Prev: #34
|
0.9 |
—
|
-2,449 | -1.8% |
P
S
|
135,035 | $4,989,543 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
SPGYF
WHITECAP RES IN...
|
Unknown | 0.87% | 1.13% |
#33
3
Prev: #30
|
0.8 |
—
|
-318 | -0.1% |
P
S
|
435,100 | $4,517,373 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
ICUI
ICU MED INC
|
Healthcare | 0.83% | 0.89% |
#34
2
Prev: #36
|
0.8 |
—
|
-343 | -1.2% |
P
S
|
29,400 | $4,310,040 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
KLTR
KALTURA INC
|
Technology | 0.82% | 0.92% |
#35
Prev: #35
|
0.8 |
—
|
-11,937 | -0.4% |
P
S
|
3,266,999 | $4,247,099 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
MCHP
MICROCHIP TECHN...
|
Technology | 0.46% | 0.40% |
#36
3
Prev: #39
|
0.7 |
—
|
-609 | -2.3% |
P
S
|
26,229 | $2,392,102 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
GNTX
GENTEX CORP
|
Consumer Cyclical | 0.28% | 0.29% |
#37
5
Prev: #42
|
0.6 |
—
|
226 | 0.4% |
P
S
|
57,159 | $1,444,419 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
GNL
GLOBAL NET LEAS...
|
Real Estate | 0.28% | 0.37% |
#38
3
Prev: #41
|
0.6 |
—
|
-9,527 | -5.6% |
P
S
|
160,598 | $1,435,746 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
SLG
SL GREEN RLTY C...
|
Real Estate | 0.26% | 0.22% |
#39
11
Prev: #50
|
1.1 |
—
|
no change | no change |
P
S
|
25,862 | $1,338,876 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
SAM
BOSTON BEER INC
|
Consumer Defensive | 0.25% | 0.39% |
#40
Prev: #40
|
0.6 |
—
|
44 | 0.6% |
P
S
|
7,283 | $1,289,309 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
NCNO
NCINO INC
|
Technology | 0.24% | 0.27% |
#41
4
Prev: #45
|
0.6 |
—
|
-4,187 | -5.3% |
P
S
|
75,333 | $1,231,695 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
FLG
FLAGSTAR BANK N...
|
Financial Services | 0.21% | 0.23% |
#42
6
Prev: #48
|
0.6 |
—
|
-255 | -0.3% |
P
S
|
74,456 | $1,112,372 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
APPS
DIGITAL TURBINE...
|
Technology | 0.20% | 0.05% |
#43
33
Prev: #76
|
1.1 |
—
|
no change | no change |
P
S
|
81,839 | $1,055,723 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
WEAV
WEAVE COMMUNICA...
|
Healthcare | 0.19% | 0.04% |
#44
40
Prev: #84
|
3.1 |
—
|
122,950 | 359.3% |
P
S
|
157,170 | $998,703 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
DOCU
DOCUSIGN INC
|
Technology | 0.18% | 0.23% |
#45
1
Prev: #46
|
0.6 |
—
|
-326 | -1.5% |
P
S
|
20,906 | $928,645 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
CNF
CNFINANCE HLDGS...
|
Financial Services | 0.18% | 0.28% |
#46
2
Prev: #44
|
2.1 |
—
|
18,407 | 5.9% |
P
S
|
332,345 | $920,596 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
GOOGL
ALPHABET INC
|
Communication Services | 0.18% | 0.17% |
#47
6
Prev: #53
|
1.1 |
—
|
no change | no change |
P
S
|
2,556 | $913,438 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
MRVL
MARVELL TECHNOL...
|
Technology | 0.17% | 0.16% |
#48
6
Prev: #54
|
0.1 |
—
|
-3,902 | -57.2% |
P
S
|
2,923 | $870,734 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
TECH
Bio-Techne Corp
|
Healthcare | 0.17% | 0.12% |
#49
8
Prev: #57
|
2.6 |
—
|
2,351 | 23.8% |
P
S
|
12,230 | $864,050 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 | |||
|
DVN
DEVON ENERGY CO...
|
Energy | 0.15% | 0.22% |
#50
1
Prev: #49
|
0.6 |
—
|
-45 | -0.2% |
P
S
|
19,021 | $785,948 | 2000 Q4 | 13F Filing | 2026-06-30 | 2026-08-05 |
Showing 1-50 of 89 holdings