Latest GAGNON SECURITIES LLC Stock Portfolio

GAGNON SECURITIES LLC Performance:

2026 Q1: -8.88%YTD: -8.88%2025: 2.74%

Performance for 2026 Q1 is -8.88%, and YTD is -8.88%, and 2025 is 2.74%.

About GAGNON SECURITIES LLC and 13F Hedge Fund Stock Holdings

On 2026-04-22, the fund reported it's updated stock portfolio. In the 13F Holdings report, GAGNON SECURITIES LLC reported an equity portfolio of $433.2 Millions as of 31 Mar, 2026.

The top stock holdings of GAGNON SECURITIES LLC are ENSG, CDNA, AMRC. The fund has invested 8.4% of it's portfolio in ENSIGN GROUP INC and 7.1% of portfolio in CAREDX INC.

The fund managers got completely rid off AIR LEASE CORP (AL), EXACT SCIENCES CORP (EXAS) and TAPESTRY INC (TPR) stocks. They significantly reduced their stock positions in NVIDIA CORPORATION (NVDA), WEAVE COMMUNICATIONS INC (WEAV) and VIAVI SOLUTIONS INC (VIAV). GAGNON SECURITIES LLC opened new stock positions in ISHARES TR (DMXF), HINGE HEALTH INC and DOCUSIGN INC (DOCU). The fund showed a lot of confidence in some stocks as they added substantially to QUIDELORTHO CORP (QDEL), SAVERS VALUE VLG INC (SVV) and COMMVAULT SYS INC (CVLT).

GAGNON SECURITIES LLC Annual Return Estimates Vs S&P 500

Our best estimate is that GAGNON SECURITIES LLC made a return of -8.88% in the last quarter. In trailing 12 months, it's portfolio return was 4.21%.

Performance
S&P 500

New Buys

Ticker	$ Bought
ishares tr	9,331,380
hinge health inc	4,791,080
docusign inc	1,006,610
eog res inc	267,599
planet labs pbc	233,438
electrovaya inc	205,330

New stocks bought by GAGNON SECURITIES LLC

Additions

Ticker	% Inc.
quidelortho corp	153
savers value vlg inc	82.71
commvault sys inc	78.39
treace med concepts inc	67.23
aspen aerogels inc	64.29
amplitude inc	51.65
freshworks inc	40.76
blackstone inc	31.53

Additions to existing portfolio by GAGNON SECURITIES LLC

Reductions

Ticker	% Reduced
nvidia corporation	-82.19
weave communications inc	-51.45
viavi solutions inc	-39.52
marinemax inc	-31.5
ces energy solutions corp	-27.02
starbucks corp	-26.01
alpha & omega semiconductor lt	-22.15
merck & co inc	-17.46

GAGNON SECURITIES LLC reduced stake in above stock

Sold off

Ticker	$ Sold
air lease corp	-31,919,500
exact sciences corp	-17,002,600
goodrx hldgs inc	-119,560
petmed express inc	-135,450
tapestry inc	-2,740,320
exxon mobil corp	-864,041
paypal hldgs inc	-385,074

GAGNON SECURITIES LLC got rid off the above stocks

Sector Distribution

GAGNON SECURITIES LLC has about 32.6% of it's holdings in Healthcare sector.

Sector	%
Healthcare	32.6
Technology	16
Others	12.2
Industrials	11.3
Consumer Cyclical	11.1
Energy	5.6
Real Estate	5.5
	4.5

Market Cap. Distribution

GAGNON SECURITIES LLC has about 26.3% of it's portfolio invested in the large-cap and mega-cap stocks.

Category	%
SMALL-CAP	29.1
LARGE-CAP	26.3
MID-CAP	26.1
UNALLOCATED	12.2
MICRO-CAP	5.3

Stocks belong to which Index?

About 70.1% of the stocks held by GAGNON SECURITIES LLC either belong to S&P 500 or RUSSELL 2000 index.

Index	%
RUSSELL 2000	53
Others	29.9
S&P 500	17.1

Top 5 Winners (%)		%
PTEN	patterson-uti energy inc	73.1 %
VIAV	viavi solutions inc	69.6 %
GNRC	generac hldgs inc	43.0 %
	ces energy solutions corp	41.0 %
DVN	devon energy corp	37.3 %

Top 5 Winners ($)		$
ENSG	ensign group inc	4.9 M
GNRC	generac hldgs inc	4.4 M
EQIX	equinix inc	3.6 M
EPD	enterprise prods partners l p	3.0 M
NVGS	navigator hldgs ltd	1.8 M

Top 5 Losers (%)		%
SMFR	genedx holdings corp	-48.5 %
APPS	digital turbine inc	-42.4 %
NCNO	ncino inc	-40.6 %
TMCI	treace med concepts inc	-39.8 %
VERX	vericel corp	-37.7 %

Top 5 Losers ($)		$
SMFR	genedx holdings corp	-18.3 M
FRSH	freshworks inc	-6.2 M
BL	blackline inc	-5.3 M
TMCI	treace med concepts inc	-4.6 M
AMPL	amplitude inc	-4.2 M

GAGNON SECURITIES LLC Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of GAGNON SECURITIES LLC

GAGNON SECURITIES LLC has 85 stocks in it's portfolio. About 47.1% of the portfolio is in top 10 stocks. SMFR proved to be the most loss making stock for the portfolio. ENSG was the most profitable stock for GAGNON SECURITIES LLC last quarter.

Last Reported on: 22 Apr, 2026

Ticker	Namesorted ascending	% Portfolio	Shares Held	$ Value	Type	% Change
AKAM	akamai technologies inc	0.08	2,896	332,606	added	14.92

AL	air lease corp	0.00	0.00	0.00	sold off	-100

ALRN	rein therapeutics inc	0.07	239,520	311,376	reduced	-0.29

AMPL	amplitude inc	1.67	1,059,840	7,228,080	added	51.65

AMRC	ameresco inc	4.94	840,063	21,421,600	added	0.86

AOSL	alpha & omega semiconductor lt	0.86	167,874	3,720,090	reduced	-22.15

APPS	digital turbine inc	0.05	81,839	235,696	unchanged	0.00

ASPN	aspen aerogels inc	1.47	1,861,850	6,367,530	added	64.29

ATNM	actinium pharmaceuticals inc	0.05	201,300	200,354	reduced	-0.25

BL	blackline inc	2.53	296,424	10,967,700	added	6.09

BLFS	biolife solutions inc	2.36	536,512	10,236,600	added	0.4

BX	blackstone inc	0.05	1,940	223,081	added	31.53

CAKE	cheesecake factory inc	2.84	225,048	12,321,400	reduced	-0.68

CARG	cargurus inc	2.13	271,524	9,245,390	added	0.26

CDNA	caredx inc	7.06	1,761,870	30,586,100	reduced	-0.73

CELC	celcuity inc	1.41	53,342	6,088,460	reduced	-0.11

CGNX	cognex corp	0.11	9,780	479,122	added	0.08

CMG	chipotle mexican grill inc	1.17	157,849	5,052,750	added	0.56

CNF	cnfinance hldgs ltd	0.28	313,938	1,227,500	reduced	-0.92

CTRE	caretrust reit inc	1.13	133,046	4,876,140	reduced	-0.02