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GS

Gagnon Securities Portfolio holdings

AUM $519M
1-Year Est. Return 44.91%
This Fund
S&P 500
This Quarter Est. Return
+9.13%
1 Year Est. Return
+44.91%
3 Year Est. Return
+129.38%
5 Year Est. Return
+108.07%
10 Year Est. Return
+1,389.15%
AUM
$499M
AUM Growth
+$6.15M
Cap. Flow
-$9.82M
Cap. Flow %
-1.97%
Top 10 Hldgs %
48.35%
Holding
95
New
8
Increased
28
Reduced
47
Closed
9

Top Buys

Rank Stock Value
1
FRSH icon
Freshworks
FRSH
+$12.7M
2
HZO icon
MarineMax
HZO
+$6.66M
3
AMPL icon
Amplitude
AMPL
+$6.06M
4
DV icon
DoubleVerify
DV
+$4.67M
5
KMX icon
CarMax
KMX
+$3.71M

Top Sells

Rank Stock Value
1
PSIX
Power Solutions International
PSIX
+$24.5M
2
AL
Air Lease Corp
AL
+$7.82M
3
ISRG icon
Intuitive Surgical
ISRG
+$5.02M
4
EXAS
Exact Sciences
EXAS
+$4.96M
5
ENSG icon
The Ensign Group
ENSG
+$4.14M

Sector Composition

Rank Sector Weight
1 Healthcare 37.2%
2 Industrials 18.49%
3 Technology 16.38%
4 Consumer Discretionary 9.94%
5 Energy 6.53%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
AL
1
DELISTED
Air Lease Corp
AL
$38.5M 7.73%
605,618
-130,819
-18% -$7.82M
ENSG icon
2
The Ensign Group
ENSG
$10.1B
$31.6M 6.34%
183,030
-25,964
-12% -$4.14M
WGS icon
3
GeneDx Holdings
WGS
$2.57B
$29M 5.82%
269,066
-2,167
-0.8% -$236K
AMRC icon
4
Ameresco
AMRC
$1.17B
$28.9M 5.79%
859,409
-10,836
-1% -$248K
CDNA icon
5
CareDx
CDNA
$2.58B
$25.1M 5.04%
1,729,425
+180,513
+12% +$2.57M
FRSH icon
6
Freshworks
FRSH
$3.62B
$22M 4.41%
1,865,818
+941,228
+102% +$12.7M
ISRG icon
7
Intuitive Surgical
ISRG
$132B
$19.4M 3.89%
43,359
-10,465
-19% -$5.02M
EPD icon
8
Enterprise Products Partners
EPD
$84.3B
$16.5M 3.32%
528,752
+41,162
+8% +$1.3M
TMCI icon
9
Treace Medical Concepts
TMCI
$302M
$15.2M 3.04%
2,258,238
+8,090
+0.4% +$52.8K
BL icon
10
BlackLine
BL
$1.92B
$14.8M 2.97%
278,919
+26,678
+11% +$1.44M
BLFS icon
11
BioLife Solutions
BLFS
$1.78B
$13.7M 2.74%
535,757
-4,139
-0.8% -$98.2K
EQIX icon
12
Equinix
EQIX
$103B
$13.5M 2.71%
17,253
-139
-0.8% -$109K
NVGS icon
13
Navigator Holdings
NVGS
$1.36B
$13.4M 2.69%
865,860
-5,148
-0.6% -$82.2K
GNRC icon
14
Generac Holdings
GNRC
$10.8B
$13M 2.6%
77,561
+9,372
+14% +$1.64M
CAKE icon
15
Cheesecake Factory
CAKE
$5.58B
$12.4M 2.49%
227,336
-29,018
-11% -$1.78M
ASPN icon
16
Aspen Aerogels
ASPN
$409M
$12.2M 2.45%
1,754,833
-144,275
-8% -$1.02M
PCRX icon
17
Pacira BioSciences
PCRX
$1.03B
$11.6M 2.32%
449,717
+81,364
+22% +$2M
CARG icon
18
CarGurus
CARG
$3.26B
$10.1M 2.03%
272,308
-52,613
-16% -$1.8M
KMX icon
19
CarMax
KMX
$8.81B
$10.1M 2.03%
225,629
+62,212
+38% +$3.71M
EXAS
20
DELISTED
Exact Sciences
EXAS
$9.82M 1.97%
179,442
-99,347
-36% -$4.96M
VERX icon
21
Vertex
VERX
$2.31B
$9.39M 1.88%
378,685
+108,839
+40% +$3.15M
PROF
22
Profound Medical
PROF
$250M
$8.47M 1.7%
1,733,040
-16,873
-1% -$86.1K
DV icon
23
DoubleVerify
DV
$2.07B
$8.15M 1.63%
679,917
+314,917
+86% +$4.67M
FIVN icon
24
FIVE9
FIVN
$2.54B
$7.25M 1.45%
299,403
-108,049
-27% -$2.86M
HZO icon
25
MarineMax
HZO
$1.15B
$6.62M 1.33%
+261,349
New +$6.66M
1
2 3 4

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Gagnon Securities's Q3 2025 Portfolio in Review

As of Q3 2025, Gagnon Securities held 95 positions worth $499M, up 1.2% from $492M the previous quarter. Its ten largest holdings account for 48% of the portfolio.

Gagnon Securities's Q3 2025 filing shows 8 new, 28 increased, 47 reduced and 9 closed positions. Its largest new stake was MarineMax: 261,349 shares worth $6.62M. The largest sale was Power Solutions International, an estimated $24.5M.

By sector, the portfolio is most concentrated in Healthcare at 37% of assets, down from 40% a quarter earlier, followed by Industrials and Technology.

  • Gagnon Securities's largest Q3 2025 buy was MarineMax: 261,349 shares worth $6.62M.
  • Gagnon Securities added most to Freshworks in Q3 2025, an estimated $12.7M increase.
  • Gagnon Securities's biggest Q3 2025 reduction was Power Solutions International, cutting an estimated $24.5M.
  • Gagnon Securities fully exited Trade Desk in Q3 2025, selling an estimated $469K.
  • Gagnon Securities's ten largest holdings make up 48% of its $499M portfolio in Q3 2025.
  • Gagnon Securities opened 8 new positions and closed 9 in Q3 2025.
  • Gagnon Securities's portfolio value rose 1.2% quarter-over-quarter to $499M.

Based on Gagnon Securities's 13F filing for Q3 2025, filed 3 Nov 2025.