ESSEX INVESTMENT MANAGEMENT CO LLC

CIK

201772

Location

BOSTON, MA

Portfolio Value

Small $743,036,835

Diversification

Diversified

Filing Date

Global Rank

#2,305 / 8,700 ▲ 776

Top Industry

Biotechnology 9.1%

Period ended 2 months ago

Filed Aug 6, 2026 · 38d

26 quarters · since Mar 2020

Portfolio Concentration

297 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026

Top Position

3.7%

+0.4 pts

Top 5

11.8%

+0.3 pts

Top 10

20.6%

+0.5 pts

HHI

102

Diversified+4

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Technology	29.8%	$221,569,459	82
Industrials	26.1%	$194,199,608	66
Healthcare	20.8%	$154,818,299	47
Financial Services	5.5%	$40,580,744	16
Consumer Defensive	5.2%	$38,867,672	15
Consumer Cyclical	4.8%	$35,358,867	16
Energy	3.9%	$28,964,822	18
Communication Services	1.8%	$13,673,515	9
Basic Materials	1.7%	$12,326,948	19
Utilities	0.4%	$2,635,676	8
Unclassified	0.0%	$41,225	1

Last Quarter's Activity

Export CSV

Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
BLND	Blend Labs, Inc.	+492,456	1,254,746	$2,145,615
III	Information Services Group Inc.	+424,945	808,345	$3,322,297
LTRX	Lantronix Inc	+319,581	662,070	$3,892,971
APYX	Apyx Medical Corp	+235,232	1,136,630	$5,103,468
LGCY	Legacy Education Inc.	+186,455	329,894	$3,879,553
CODA	Coda Octopus Group, Inc.	+132,638	322,278	$3,148,656
OSG	Octave Specialty Group Inc	+121,086	539,289	$3,365,163
BDSX	Biodesix Inc	+109,829	241,915	$5,455,183
OCUL	Ocular Therapeutix, Inc	+89,436	482,154	$4,734,752
AVPT	AvePoint, Inc.	+73,059	571,541	$6,406,974
LPTH	Lightpath Technologies Inc	+68,521	285,052	$4,660,600
CMCO	Columbus Mckinnon Corp	+66,609	278,316	$4,210,921
SIBN	SI-BONE, Inc.	+58,916	271,404	$4,429,313
SFM	Sprouts Farmers Market, Inc.	+44,773	55,176	$4,666,786
OUST	Ouster, Inc.	+41,443	226,028	$14,131,270
IBEX	IBEX Ltd	+40,398	98,156	$2,980,997
PATK	Patrick Industries Inc	+36,732	82,960	$7,448,148
DAKT	Daktronics Inc /Sd/	+34,342	216,428	$4,233,331
JOUT	Johnson Outdoors Inc	+31,312	94,176	$4,335,863
LNSR	LENSAR, Inc.	+23,224	53,258	$304,103
LYTS	Lsi Industries Inc	+21,738	295,820	$7,862,895
RDVT	Red Violet, Inc.	+21,613	82,555	$5,260,404
BMI	Badger Meter Inc	+18,883	28,041	$4,160,723
MWH	SOLV Energy, Inc.	+12,628	30,436	$1,036,345
OESX	Orion Energy Systems, Inc.	+8,051	20,608	$240,907
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
RPID	Rapid Micro Biosystems, Inc.	−521,235	362,696	$627,464
INVE	Identiv, Inc.	−252,170	484,438	$1,220,783
NMTC	NEUROONE MEDICAL TECHNOLOGIES Corp	−218,375	43,578	$132,477
AMPX	Amprius Technologies, Inc.	−160,846	284,595	$3,944,486
STXS	Stereotaxis, Inc.	−68,135	1,521,966	$2,617,781
COHU	Cohu Inc	−60,715	131,170	$9,694,774
CPSH	Cps Technologies Corp/De/	−52,590	21,524	$118,812
IDN	Intellicheck, Inc.	−49,678	488,164	$2,001,472
CRGO	Freightos Ltd	−42,422	955,286	$1,452,034
WK	Workiva Inc	−35,605	728	$35,315
GHM	Graham Corp	−34,889	93,405	$11,562,604
RSKD	Riskified Ltd.	−33,947	769,085	$3,876,188
TTI	Tetra Technologies Inc	−33,092	741,007	$8,395,609
XERS	Xeris Biopharma Holdings, Inc.	−32,161	715,608	$5,667,615
CXDO	Crexendo, Inc.	−32,112	710,874	$5,310,228
SOPH	SOPHiA GENETICS SA	−29,381	663,428	$3,827,979
TVTX	Travere Therapeutics, Inc.	−27,839	133,866	$7,604,927
AMPG	AmpliTech Group, Inc.	−27,314	60,526	$421,260
BWAY	Brainsway Ltd.	−25,947	592,606	$9,191,319
CURI	CuriosityStream Inc.	−25,822	595,057	$1,582,851
AEVA	Aeva Technologies, Inc.	−24,246	34,028	$977,284
MASS	908 Devices Inc.	−20,977	470,244	$4,091,122
ADPT	Adaptive Biotechnologies Corp	−20,640	472,763	$0
INSM	INSMED Inc	−19,685	42,991	$4,583,700
XZO	Exzeo Group, Inc.	−19,407	268,704	$4,533,036
No positions match the current search.

New Positions

Positions the filer opened this quarter

24 positions

Ticker	Company	Shares	Value
WERN	Werner Enterprises Inc	231,625	$10,101,166
XMTR	Xometry, Inc.	55,919	$5,397,301
BXC	BlueLinx Holdings Inc.	86,593	$5,358,374
TILE	Interface Inc	123,401	$4,422,691
PGEN	Precigen, Inc.	706,294	$4,025,875
NUVB	Nuvation Bio Inc.	671,041	$3,811,512
FET	Forum Energy Technologies, Inc.	66,611	$3,345,870
CRWD	CrowdStrike Holdings, Inc.	4,169	$3,181,530
KVHI	Kvh Industries Inc \De\	293,132	$2,904,938
REAL	TheRealReal, Inc.	230,657	$2,719,446
P	Everpure, Inc.	32,385	$2,551,614
TNXP	Tonix Pharmaceuticals Holding Corp.	165,144	$2,107,237
MP	MP Materials Corp. / DE	13,906	$778,875
FOCL	Edap Tms SA	146,005	$756,305
ELVA	Electrovaya Inc.	71,791	$753,805
SEDG	Solaredge Technologies, Inc.	12,033	$703,208
CCJ	Cameco Corp	5,630	$573,471
EOSE	Eos Energy Enterprises, Inc.	60,425	$355,299
BRCC	BRC Inc.	2,624,990	$291,373
OCC	Optical Cable Corp	12,629	$264,830
POCI	Precision Optics Corporation, Inc.	46,630	$237,813
ALAR	Alarum Technologies Ltd.	27,747	$223,085
FATN	Fatpipe Inc/UT	29,053	$183,033
FDXF	FedEx Freight Holding Company, Inc.	22	$3,322
No positions match the current search.

Sold Out

Positions the filer fully exited

25 positions

Ticker	Company	Shares	Value
GSAT	Globalstar, Inc.	165,665	$11,003,469
PRIM	Primoris Services Corp	48,177	$6,891,238
BVS	Bioventus Inc.	603,258	$5,507,745
SNDX	Syndax Pharmaceuticals Inc	198,985	$4,648,289
AGIO	Agios Pharmaceuticals, Inc.	103,177	$3,490,477
EVER	EverQuote, Inc.	217,075	$3,347,296
CRM	Salesforce, Inc.	17,854	$3,332,806
VREX	Varex Imaging Corp	279,551	$2,966,036
INFU	InfuSystem Holdings, Inc	299,332	$2,762,834
CCLD	CareCloud, Inc.	697,836	$2,547,101
ONT	Onterris, Inc.	111,473	$2,440,143
EXTR	Extreme Networks Inc	158,032	$2,383,122
LAW	CS Disco, Inc.	539,314	$2,060,179
GENC	Gencor Industries Inc	129,563	$1,943,445
ZS	Zscaler, Inc.	11,412	$1,600,989
ALLT	Allot Ltd.	226,056	$1,505,532
ERII	Energy Recovery, Inc.	132,322	$1,332,482
IOT	Samsara Inc.	33,164	$1,050,967
AAXJ	iShares MSCI All Country Asia ex Japan ETF	2,208	$692,892
VB	Vanguard Morningstar Small-Cap ETF	1,206	$386,896
FLNC	Fluence Energy, Inc.	25,576	$351,925
NSPR	InspireMD, Inc.	114,085	$185,958
GEOS	Geospace Technologies Corp	13,636	$166,359
AWRE	Aware Inc /Ma/	43,105	$53,881
AFK	VanEck Africa Index ETF	156	$18,726
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

297 tracked positions · $743,036,835 total · filing declares 306 positions · $763,373,957 · as of Jun 30, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Technology Utilities

Showing 1–50 of 297 positions by value · page 1 of 6

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
TSEM	Tower Semiconductor Ltd Technology	Reduced	105,543	-10,390	$27,508,727	+35.2%	3.70%
LINC	Lincoln Educational Services Corp Consumer Defensive	Reduced	340,366	-14,938	$16,984,263	+17.5%	2.29%
KNSA	Kiniksa Pharmaceuticals International, plc Healthcare	Reduced	241,382	-7,896	$15,436,378	+28.6%	2.08%
OUST	Ouster, Inc. Technology	Added	226,028	+41,443	$14,131,270	+316.8%	1.90%
LGND	Ligand Pharmaceuticals Inc Healthcare	Reduced	43,567	-14,893	$13,771,093	+18.0%	1.85%
CECO	Ceco Environmental Corp Industrials	Reduced	150,416	-6,830	$13,648,747	+45.7%	1.84%
STRL	Sterling Infrastructure, Inc. Industrials	Reduced	16,155	-15,902	$13,559,860	+3.9%	1.82%
AIP	Arteris, Inc. Technology	Reduced	277,665	-12,654	$13,491,742	+182.7%	1.82%
MIRM	Mirum Pharmaceuticals, Inc. Healthcare	Reduced	105,669	-2,669	$12,370,669	+23.6%	1.66%
AGX	Argan Inc Industrials	Reduced	15,467	-631	$12,351,172	+40.9%	1.66%
GHM	Graham Corp Industrials	Reduced	93,405	-34,889	$11,562,604	+14.2%	1.56%
DRS	Leonardo DRS, Inc. Industrials	Reduced	250,215	-11,239	$10,676,674	−8.3%	1.44%
WERN	Werner Enterprises Inc Industrials	NEW	231,625	NEW	$10,101,166	NEW	1.36%
HCI	HCI Group, Inc. Financial Services	Reduced	56,260	-1,374	$9,859,565	+10.6%	1.33%
GEV	GE Vernova Inc. Industrials	Reduced	8,283	-36	$9,731,365	+34.0%	1.31%
COHU	Cohu Inc Technology	Reduced	131,170	-60,715	$9,694,774	+65.0%	1.30%
AAPL	Apple Inc. Technology	Reduced	32,427	-153	$9,383,076	+13.5%	1.26%
AMSC	American Superconductor Corp /De/ Industrials	Reduced	221,933	-5,625	$9,212,438	+19.6%	1.24%
BWAY	Brainsway Ltd. Healthcare	Reduced	592,606	-25,947	$9,191,319	+11.8%	1.24%
TTI	Tetra Technologies Inc Energy	Reduced	741,007	-33,092	$8,395,609	+27.3%	1.13%
LYTS	Lsi Industries Inc Technology	Added	295,820	+21,738	$7,862,895	+54.2%	1.06%
MRVL	Marvell Technology, Inc. Technology	Reduced	25,911	-10,292	$7,718,627	+115.2%	1.04%
KTOS	Kratos Defense & Security Solutions, Inc. Industrials	Reduced	153,576	-5,268	$7,657,299	−31.6%	1.03%
TVTX	Travere Therapeutics, Inc. Healthcare	Reduced	133,866	-27,839	$7,604,927	+58.3%	1.02%
GS	Goldman Sachs Group Inc Financial Services	Reduced	7,513	-43	$7,598,422	+18.9%	1.02%
PATK	Patrick Industries Inc Consumer Cyclical	Added	82,960	+36,732	$7,448,148	+45.1%	1.00%
ORN	Orion Group Holdings Inc Industrials	Reduced	442,603	-19,169	$7,444,582	+47.9%	1.00%
ASML	Asml Holding NV Technology	Reduced	3,538	-18	$7,038,638	+49.9%	0.95%
AMBA	Ambarella Inc Technology	Reduced	79,997	-2,390	$6,863,742	+61.8%	0.92%
NVCR	NovoCure Ltd Healthcare	Reduced	439,648	-12,722	$6,660,667	+35.1%	0.90%
AMZN	Amazon Com Inc Consumer Cyclical	Reduced	27,062	-146	$6,449,957	+13.8%	0.87%
AVPT	AvePoint, Inc. Technology	Added	571,541	+73,059	$6,406,974	+35.2%	0.86%
WMS	Advanced Drainage Systems, Inc. Industrials	Reduced	40,413	-156	$6,343,224	+14.0%	0.85%
SMTC	Semtech Corp Technology	Reduced	38,226	-12,418	$6,186,878	+58.9%	0.83%
OII	Oceaneering International Inc Energy	Reduced	151,463	-6,911	$6,137,280	+9.3%	0.83%
ECG	Everus Construction Group, Inc. Industrials	Reduced	36,377	-1,721	$6,036,763	+34.2%	0.81%
AEM	Agnico Eagle Mines Ltd Basic Materials	Reduced	38,462	-181	$5,966,610	−23.9%	0.80%
LQDA	Liquidia Corp Healthcare	Reduced	74,743	-3,428	$5,959,259	+102.0%	0.80%
WLDN	Willdan Group, Inc. Industrials	Reduced	74,890	-3,402	$5,923,799	−1.2%	0.80%
FEIM	Frequency Electronics Inc Technology	Reduced	89,043	-3,983	$5,908,003	+43.5%	0.80%
MSFT	Microsoft Corp Technology	Reduced	15,714	-77	$5,861,636	+0.3%	0.79%
MAMA	Mama's Creations, Inc. Consumer Defensive	Reduced	326,938	-14,719	$5,835,843	+11.3%	0.79%
XERS	Xeris Biopharma Holdings, Inc. Healthcare	Reduced	715,608	-32,161	$5,667,615	+30.7%	0.76%
PKE	Park Aerospace Corp Industrials	Reduced	143,663	-6,230	$5,482,180	+33.6%	0.74%
BDSX	Biodesix Inc Healthcare	Added	241,915	+109,829	$5,455,183	+184.8%	0.73%
XMTR	Xometry, Inc. Industrials	NEW	55,919	NEW	$5,397,301	NEW	0.73%
BXC	BlueLinx Holdings Inc. Industrials	NEW	86,593	NEW	$5,358,374	NEW	0.72%
MITK	Mitek Systems Inc Technology	Reduced	263,913	-11,689	$5,312,568	+42.8%	0.71%
CXDO	Crexendo, Inc. Communication Services	Reduced	710,874	-32,112	$5,310,228	+15.8%	0.71%
MIR	Mirion Technologies, Inc. Industrials	Reduced	295,060	-14,050	$5,290,425	−7.9%	0.71%

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.