GAGNON SECURITIES LLC

Broker-Dealer

CIK

1125725

Location

New York, NY

Portfolio Value

Small $421,890,569

Diversification

Diversified

Filing Date

Global Rank

#2,877 / 8,622 ▼ 171 · as of Mar 2026

Top Industry

Diagnostics & Research 11.9%

3Y Alpha vs SPY

-3.6%

Period ended 4 months ago

Filed Apr 22, 2026 · 3mo

25 quarters · since Mar 2020

Clone Performance

Jul 2023–Jul 2026 · vs SPY

Hypothetical growth of buying every stock this filer reported holding, rebalancing on each filing and indexed to the same start. Option positions cannot be bought this way and are left out.

Cloned portfolio

+57.7%

SPY

+67.9%

Annualised alpha

-2.5%

Max drawdown

−26.1%

Estimate. 13F holdings are quarter-lagged, so the clone rebalances about 45 days after each period end — when the filing becomes public — and it excludes option and short positions. It tracks 100% of reported value on average across 13 quarters. Past performance does not predict future results.

Portfolio Concentration

81 tracked 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
GRSD	GRANDSTAND 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	ExxonMobil Holdings 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 tracked 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%

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.