GAGNON SECURITIES LLC

Broker-Dealer

CIK

1125725

Location

New York, NY

Portfolio Value

Small $421,890,569

Diversification

Diversified

Filing Date

Global Rank

#2,871 / 8,604 ▼ 168 · as of Mar 2026

Top Industry

Diagnostics & Research 11.9%

3Y Alpha vs SPY

-4.5%

Period ended 3 months ago

Filed Apr 22, 2026 · 3mo

25 quarters · since Mar 2020

Clone Performance

Jul 2023–Jul 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+57.4%

SPY

+76.5%

Annualised alpha

-4.5%

Max drawdown

−26.1%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

81 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025

Top Position

8.6%

+1.7 pts

Top 5

30.1%

−1.4 pts

Top 10

48.4%

−0.1 pts

HHI

354

Diversified+4

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Healthcare	42.2%	$178,156,072	21
Technology	15.4%	$65,145,863	25
Industrials	11.7%	$49,183,549	6
Consumer Cyclical	11.5%	$48,341,508	11
Energy	10.9%	$46,135,483	6
Real Estate	5.7%	$24,039,895	4
Communication Services	1.6%	$6,785,814	4
Financial Services	0.6%	$2,434,520	3
Consumer Defensive	0.4%	$1,667,865	1

Last Quarter's Activity

Export CSV

Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
TMCI	Treace Medical Concepts, Inc.	+2,091,311	5,201,886	$6,970,527
ASPN	Aspen Aerogels Inc	+728,603	1,861,851	$6,367,530
FRSH	Freshworks Inc.	+501,356	1,731,367	$13,902,877
KLTR	Kaltura Inc	+417,571	3,278,936	$4,000,301
AMPL	Amplitude, Inc.	+360,966	1,059,836	$7,228,081
QDEL	QuidelOrtho Corp	+244,148	403,325	$6,626,629
OSUR	Orasure Technologies Inc	+144,609	1,714,391	$5,143,173
PCRX	Pacira BioSciences, Inc.	+116,299	617,510	$13,955,726
VERX	Vertex, Inc.	+103,577	468,220	$5,567,135
WGS	GeneDx Holdings Corp.	+49,615	303,149	$19,468,228
NVGS	Navigator Holdings Ltd.	+24,777	886,631	$17,138,577
BL	Blackline, Inc.	+17,026	296,424	$10,967,688
SVV	Savers Value Village, Inc.	+11,384	25,148	$187,101
AMRC	Ameresco, Inc.	+7,179	840,063	$21,421,606
NCNO	nCino, Inc.	+6,026	79,520	$1,191,209
GAMB	Gambling.com Group Ltd	+4,128	109,697	$425,624
RDHL	RedHill Biopharma Ltd.	+2,303	88,405	$65,861
BLFS	Biolife Solutions Inc	+2,155	536,512	$10,236,648
CVLT	Commvault Systems Inc	+1,923	4,376	$340,846
GNTX	Gentex Corp	+1,261	56,933	$1,243,986
SAM	Boston Beer Co Inc	+884	7,239	$1,667,865
CMG	Chipotle Mexican Grill Inc	+874	157,849	$5,052,746
CARG	CarGurus, Inc.	+702	271,524	$9,245,392
ICUI	Icu Medical Inc/De	+670	29,743	$3,841,308
MRVL	Marvell Technology, Inc.	+498	6,825	$676,016
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
HZO	Marinemax Inc	−101,443	220,610	$5,969,706
WCPRF	Whitecap Resources Inc.	−50,704	435,418	$4,902,806
AOSL	ALPHA & OMEGA SEMICONDUCTOR Ltd	−47,768	167,874	$3,720,087
PTEN	Patterson Uti Energy Inc	−38,131	314,646	$3,407,616
WEAV	Weave Communications, Inc.	−36,269	34,220	$158,096
NVDA	Nvidia Corp	−16,862	3,655	$637,432
EPD	Enterprise Products Partners L.P.	−13,344	514,257	$19,459,484
CDNA	CareDx, Inc.	−13,016	1,761,874	$30,586,132
KMX	Carmax Inc	−10,378	309,699	$12,877,284
VIAV	Viavi Solutions Inc.	−9,481	14,511	$482,926
HIMX	Himax Technologies, Inc.	−9,173	44,773	$352,363
FIVN	Five9, Inc.	−3,662	622,064	$9,436,710
DV	DoubleVerify Holdings, Inc.	−3,202	488,462	$4,640,389
CNF	CNFinance Holdings Ltd.	−2,915	313,938	$1,227,497
CAKE	Cheesecake Factory Inc	−1,546	225,048	$12,321,378
SBUX	Starbucks Corp	−1,431	4,071	$364,720
T	At&T Inc.	−1,133	32,094	$930,405
ENSG	Ensign Group, Inc	−878	179,671	$36,203,706
RNTX	Rein Therapeutics, Inc.	−700	239,520	$311,376
GNRC	Generac Holdings Inc.	−680	74,913	$14,632,756
MRK	Merck & Co., Inc.	−675	3,192	$383,965
PRLB	Proto Labs Inc	−659	110,889	$6,322,890
ATNM	Actinium Pharmaceuticals, Inc.	−507	201,300	$200,293
GNL	Global Net Lease, Inc.	−385	170,125	$1,592,370
MCHP	Microchip Technology Inc	−324	26,838	$1,734,003
No positions match the current search.

New Positions

Positions the filer opened this quarter

5 positions

Ticker	Company	Shares	Value
HNGE	Hinge Health, Inc.	124,250	$4,791,080
DOCU	Docusign, Inc.	21,232	$1,006,609
EOG	Eog Resources Inc	1,851	$267,599
PL	Planet Labs PBC	8,352	$233,438
ELVA	Electrovaya Inc.	26,257	$205,329
No positions match the current search.

Sold Out

Positions the filer fully exited

7 positions

Ticker	Company	Shares	Value
AL	SUMISHO AIR LEASE CORP	496,957	$31,919,548
EXAS	EXACT SCIENCES CORP	167,414	$17,002,565
TPR	Tapestry, Inc.	21,447	$2,740,283
XOM	Exxon Mobil Corp	7,180	$864,041
PYPL	PayPal Holdings, Inc.	6,596	$385,074
PETS	Petmed Express Inc	42,328	$135,449
GDRX	GoodRx Holdings, Inc.	44,118	$119,559
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

81 positions · $421,890,569 total · as of Mar 31, 2026

All sectors Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Real Estate Technology

Showing 1–50 of 81 positions by value · page 1 of 2

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
ENSG	Ensign Group, Inc Healthcare	Reduced	179,671	-878	$36,203,706	+15.1%	8.58%
CDNA	CareDx, Inc. Healthcare	Reduced	1,761,874	-13,016	$30,586,132	−8.5%	7.25%
AMRC	Ameresco, Inc. Industrials	Added	840,063	+7,179	$21,421,606	−12.2%	5.08%
WGS	GeneDx Holdings Corp. Healthcare	Added	303,149	+49,615	$19,468,228	−41.0%	4.61%
EPD	Enterprise Products Partners L.P. Energy	Reduced	514,257	-13,344	$19,459,484	+15.0%	4.61%
NVGS	Navigator Holdings Ltd. Energy	Added	886,631	+24,777	$17,138,577	+14.8%	4.06%
EQIX	Equinix Inc Real Estate	Reduced	16,951	-191	$16,616,048	+26.5%	3.94%
GNRC	Generac Holdings Inc. Industrials	Reduced	74,913	-680	$14,632,756	+41.9%	3.47%
ISRG	Intuitive Surgical Inc Healthcare	Reduced	31,619	-178	$14,576,042	−19.1%	3.45%
PCRX	Pacira BioSciences, Inc. Healthcare	Added	617,510	+116,299	$13,955,726	+7.6%	3.31%
FRSH	Freshworks Inc. Technology	Added	1,731,367	+501,356	$13,902,877	−7.7%	3.30%
KMX	Carmax Inc Consumer Cyclical	Reduced	309,699	-10,378	$12,877,284	+4.1%	3.05%
PROF	Profound Medical Corp. Healthcare	Added	1,944,324	+263	$12,599,219	−17.7%	2.99%
CAKE	Cheesecake Factory Inc Consumer Cyclical	Reduced	225,048	-1,546	$12,321,378	+7.7%	2.92%
BL	Blackline, Inc. Technology	Added	296,424	+17,026	$10,967,688	−29.0%	2.60%
BLFS	Biolife Solutions Inc Healthcare	Added	536,512	+2,155	$10,236,648	−20.8%	2.43%
FIVN	Five9, Inc. Technology	Reduced	622,064	-3,662	$9,436,710	−24.8%	2.24%
CARG	CarGurus, Inc. Consumer Cyclical	Added	271,524	+702	$9,245,392	−11.0%	2.19%
AMPL	Amplitude, Inc. Technology	Added	1,059,836	+360,966	$7,228,081	−10.7%	1.71%
TMCI	Treace Medical Concepts, Inc. Healthcare	Added	5,201,886	+2,091,311	$6,970,527	−8.5%	1.65%
QDEL	QuidelOrtho Corp Healthcare	Added	403,325	+244,148	$6,626,629	+45.8%	1.57%
ASPN	Aspen Aerogels Inc Industrials	Added	1,861,851	+728,603	$6,367,530	+98.5%	1.51%
PRLB	Proto Labs Inc Industrials	Reduced	110,889	-659	$6,322,890	+12.0%	1.50%
CELC	Celcuity Inc. Healthcare	Reduced	53,342	-59	$6,088,455	+14.3%	1.44%
HZO	Marinemax Inc Consumer Cyclical	Reduced	220,610	-101,443	$5,969,706	−23.5%	1.41%
VERX	Vertex, Inc. Technology	Added	468,220	+103,577	$5,567,135	−23.5%	1.32%
OSUR	Orasure Technologies Inc Healthcare	Reduced	1,714,391	-3,420,706	$5,143,173	−58.6%	1.22%
CMG	Chipotle Mexican Grill Inc Consumer Cyclical	Added	157,849	+874	$5,052,746	−13.0%	1.20%
WCPRF	Whitecap Resources Inc. Energy	Reduced	435,418	-50,704	$4,902,806	+20.4%	1.16%
CTRE	CareTrust REIT, Inc. Real Estate	Reduced	133,046	-25	$4,876,135	+1.3%	1.16%
HNGE	Hinge Health, Inc. Healthcare	NEW	124,250	NEW	$4,791,080	NEW	1.14%
DV	DoubleVerify Holdings, Inc. Communication Services	Reduced	488,462	-3,202	$4,640,389	−17.5%	1.10%
PNTG	Pennant Group, Inc. Healthcare	Reduced	137,484	-42	$4,190,512	+8.2%	0.99%
KLTR	Kaltura Inc Technology	Added	3,278,936	+417,571	$4,000,301	−14.8%	0.95%
ICUI	Icu Medical Inc/De Healthcare	Added	29,743	+670	$3,841,308	−7.4%	0.91%
AOSL	ALPHA & OMEGA SEMICONDUCTOR Ltd Technology	Reduced	167,874	-47,768	$3,720,087	−12.9%	0.88%
PTEN	Patterson Uti Energy Inc Energy	Reduced	314,646	-38,131	$3,407,616	+58.1%	0.81%
MCHP	Microchip Technology Inc Technology	Reduced	26,838	-324	$1,734,003	+0.2%	0.41%
SAM	Boston Beer Co Inc Consumer Defensive	Added	7,239	+884	$1,667,865	+34.5%	0.40%
GNL	Global Net Lease, Inc. Real Estate	Reduced	170,125	-385	$1,592,370	+8.6%	0.38%
GNTX	Gentex Corp Consumer Cyclical	Added	56,933	+1,261	$1,243,986	−4.0%	0.29%
PFE	Pfizer Inc Healthcare	Reduced	44,260	-93	$1,242,820	+12.5%	0.29%
CNF	CNFinance Holdings Ltd. Financial Services	Reduced	313,938	-2,915	$1,227,497	−36.0%	0.29%
NCNO	nCino, Inc. Technology	Added	79,520	+6,026	$1,191,209	−36.8%	0.28%
DOCU	Docusign, Inc. Technology	NEW	21,232	NEW	$1,006,609	NEW	0.24%
FLG	Flagstar Bank, National Association Financial Services	Reduced	74,711	-156	$983,943	+4.4%	0.23%
DVN	Devon Energy Corp/De Energy	Reduced	19,066	-45	$959,401	+37.1%	0.23%
SLG	Sl Green Realty Corp Real Estate	Added	25,862	+24	$955,342	−19.4%	0.23%
T	At&T Inc. Communication Services	Reduced	32,094	-1,133	$930,405	+12.7%	0.22%
MTSI	MACOM Technology Solutions Holdings, Inc. Technology	Added	3,670	+375	$814,996	+44.4%	0.19%