ESSEX INVESTMENT MANAGEMENT CO LLC

CIK

201772

Location

BOSTON, MA

Portfolio Value

Small $156,289,491

Diversification

Diversified

Filing Date

Global Rank

#2,311 / 8,588 ▲ 6

Top Industry

Biotechnology 9.6%

3Y Alpha vs SPY

+4.2%

Period ended 3 months ago

Filed May 11, 2026 · 37d

25 quarters · since Mar 2020

Clone Performance

Jun 2023–Jun 2026 · vs SPY

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

Cloned portfolio

+95.9%

SPY

+76.8%

Annualised alpha

+4.2%

Max drawdown

−25.2%

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

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

Top Position

3.2%

−0.3 pts

Top 5

11.4%

+0.0 pts

Top 10

20.0%

+0.8 pts

HHI

Diversified+1

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Industrials	28.2%	$177,604,407	65
Technology	24.9%	$156,289,491	82
Healthcare	23.5%	$147,835,756	49
Financial Services	5.7%	$35,842,377	16
Consumer Defensive	4.6%	$29,190,367	14
Communication Services	4.0%	$24,983,305	11
Consumer Cyclical	3.5%	$22,009,888	14
Energy	2.9%	$18,268,300	16
Basic Materials	2.3%	$14,280,332	18
Utilities	0.4%	$2,551,074	9
Unclassified	0.0%	$52,535	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
RPID	Rapid Micro Biosystems, Inc.	+821,605	883,931	$2,006,523
CRGO	Freightos Ltd	+379,144	997,708	$1,636,241
BWAY	Brainsway Ltd.	+314,373	618,553	$8,220,569
IDN	Intellicheck, Inc.	+215,949	537,842	$3,759,515
BVS	Bioventus Inc.	+215,372	603,258	$5,507,745
LPTH	Lightpath Technologies Inc	+175,624	216,531	$2,171,805
CODA	Coda Octopus Group, Inc.	+166,341	189,640	$2,142,932
NMTC	NEUROONE MEDICAL TECHNOLOGIES Corp	+73,526	261,953	$203,537
DCBO	Docebo Inc.	+71,364	172,367	$3,011,251
OPTT	Ocean Power Technologies, Inc.	+30,579	205,193	$71,817
STXS	Stereotaxis, Inc.	+28,082	1,590,101	$2,925,785
TRT	Trio-Tech International	+15,737	31,474	$181,919
TTI	Tetra Technologies Inc	+13,706	774,099	$6,595,323
BLND	Blend Labs, Inc.	+13,316	762,290	$1,295,893
XERS	Xeris Biopharma Holdings, Inc.	+13,237	747,769	$4,337,060
CXDO	Crexendo, Inc.	+13,109	742,986	$4,584,223
CCLD	CareCloud, Inc.	+12,932	697,836	$2,547,101
INVE	Identiv, Inc.	+12,923	736,608	$2,725,449
AMSC	American Superconductor Corp /De/	+12,404	227,558	$7,702,838
ORN	Orion Group Holdings Inc	+12,011	461,772	$5,033,314
ENPH	Enphase Energy, Inc.	+11,305	35,440	$1,339,986
CURI	CuriosityStream Inc.	+10,950	620,879	$1,837,801
RVSB	Riverview Bancorp Inc	+10,316	390,295	$2,146,622
LAW	CS Disco, Inc.	+9,534	539,314	$2,060,179
MASS	908 Devices Inc.	+8,607	491,221	$3,006,272
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
ADPT	Adaptive Biotechnologies Corp	−130,814	493,403	$6,848,433
TSEM	Tower Semiconductor Ltd	−76,695	115,933	$20,343,922
AMPX	Amprius Technologies, Inc.	−71,324	445,441	$7,510,135
OSS	One Stop Systems, Inc.	−33,822	35,534	$268,992
LINC	Lincoln Educational Services Corp	−33,515	355,304	$14,453,766
KTOS	Kratos Defense & Security Solutions, Inc.	−31,350	158,844	$11,200,090
EVER	EverQuote, Inc.	−14,349	217,075	$3,347,296
FLNC	Fluence Energy, Inc.	−12,982	25,576	$351,925
STRL	Sterling Infrastructure, Inc.	−12,628	32,057	$13,055,854
GHM	Graham Corp	−12,397	128,294	$10,124,962
AGX	Argan Inc	−11,530	16,098	$8,767,775
CON	Concentra Group Holdings Parent, Inc.	−11,020	149,625	$3,209,456
AVPT	AvePoint, Inc.	−9,532	498,482	$4,740,563
VZ	Verizon Communications Inc	−6,787	6,546	$328,609
RFIL	R F Industries Ltd	−6,703	17,895	$184,497
CGNX	Cognex Corp	−6,195	30,065	$1,472,884
PAYX	Paychex Inc	−5,737	10,934	$1,007,240
NEE	Nextera Energy Inc	−5,247	9,923	$921,648
PEGA	Pegasystems Inc	−4,979	74,445	$3,168,379
CL	Colgate Palmolive Co	−4,429	6,931	$590,729
BKR	Baker Hughes Co	−4,010	54,682	$3,338,336
B	Barrick Mining Corp	−3,923	22,975	$937,150
IOT	Samsara Inc.	−3,818	33,164	$1,050,967
KO	Coca Cola Co	−3,739	10,563	$803,316
PG	PROCTER & GAMBLE Co	−3,567	5,865	$847,140
No positions match the current search.

New Positions

Positions the filer opened this quarter

25 positions

Ticker	Company	Shares	Value
NVCR	NovoCure Ltd	452,370	$4,930,833
SNDX	Syndax Pharmaceuticals Inc	198,985	$4,648,289
MG	Mistras Group, Inc.	268,567	$3,969,420
MITK	Mitek Systems Inc	275,602	$3,720,627
MRVL	Marvell Technology, Inc.	36,203	$3,585,907
AGIO	Agios Pharmaceuticals, Inc.	103,177	$3,490,477
SOPH	SOPHiA GENETICS SA	692,809	$3,429,404
DIOD	Diodes Inc /Del/	48,869	$3,335,797
APYX	Apyx Medical Corp	901,398	$3,326,158
RSKD	Riskified Ltd.	803,032	$3,147,885
LQDA	Liquidia Corp	78,171	$2,950,173
JOUT	Johnson Outdoors Inc	62,864	$2,923,804
BDSX	Biodesix Inc	132,086	$1,915,247
LGCY	Legacy Education Inc.	143,439	$1,795,856
LTRX	Lantronix Inc	342,489	$1,794,642
ALLT	Allot Ltd.	226,056	$1,505,532
SFM	Sprouts Farmers Market, Inc.	10,403	$802,383
LNN	Lindsay Corp	5,927	$705,727
MWH	SOLV Energy, Inc.	17,808	$534,774
AMBQ	Ambiq Micro, Inc.	19,216	$488,278
CVGI	Commercial Vehicle Group, Inc.	59,834	$204,033
HBIO	Harvard Bioscience Inc	27,021	$131,592
NTWK	Netsol Technologies Inc	37,493	$127,101
LVO	LiveOne, Inc.	24,535	$125,128
IFNNY	Infineon Technologies AG	607	$27,442
No positions match the current search.

Sold Out

Positions the filer fully exited

25 positions

Ticker	Company	Shares	Value
BBNX	Beta Bionics, Inc.	217,796	$6,636,244
UVE	Universal Insurance Holdings, Inc.	177,374	$5,995,241
ANGO	Angiodynamics Inc	360,544	$4,629,384
WGO	Winnebago Industries Inc	109,490	$4,436,534
MXL	Maxlinear, Inc	235,595	$4,106,420
GLDD	Great Lakes Dredge & Dock CORP	301,986	$3,962,056
RDCM	Radcom Ltd	228,305	$2,986,229
CRNT	Ceragon Networks Ltd	1,391,697	$2,922,563
DERM	Journey Medical Corp	345,977	$2,667,482
LZ	Legalzoom.Com, Inc.	267,857	$2,659,820
PROF	Profound Medical Corp.	309,604	$2,436,583
FSLR	First Solar, Inc.	8,021	$2,095,325
CTM	Castellum, Inc.	2,114,029	$1,908,968
PHR	Phreesia, Inc.	102,423	$1,732,997
SLND	Southland Holdings, Inc.	475,723	$1,579,400
BLDR	Builders FirstSource, Inc.	13,482	$1,387,162
PRLB	Proto Labs Inc	15,504	$784,347
DE	Deere & Co	1,468	$683,456
DFLI	Dragonfly Energy Holdings Corp.	196,007	$601,741
OWLT	Owlet, Inc.	28,563	$462,434
ARRY	Array Technologies, Inc.	46,725	$430,804
ACNT	Ascent Industries Co.	12,041	$194,943
AIRG	Airgain Inc	19,398	$78,755
LASE	Laser Photonics Corp	27,361	$67,581
SPY	Spdr S&P 500 ETF Trust	85	$57,963
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

82 positions · $156,289,491 total · Technology only · as of Mar 31, 2026

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

Showing 1–50 of 82 positions by value · page 1 of 2

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
APH	Amphenol Corp /De/ Technology	Held	168	0	$21,226	−6.5%	0.01%
ALKT	Alkami Technology, Inc. Technology	Held	1,567	0	$24,554	−32.1%	0.02%
IFNNY	Infineon Technologies AG Technology	NEW	607	NEW	$27,442	NEW	0.02%
G	Genpact LTD Technology	Held	823	0	$30,656	−20.4%	0.02%
RELY	Remitly Global, Inc. Technology	Held	2,016	0	$31,590	+13.6%	0.02%
ITRI	Itron, Inc. Technology	Held	362	0	$32,446	−3.5%	0.02%
Q	Qnity Electronics, Inc. Technology	Held	357	0	$41,190	+41.3%	0.03%
TER	Teradyne, Inc Technology	Held	145	0	$42,986	+53.2%	0.03%
QTWO	Q2 Holdings, Inc. Technology	Held	974	0	$46,070	−34.5%	0.03%
VTSI	VirTra, Inc Technology	Held	12,856	0	$47,695	−11.7%	0.03%
MU	Micron Technology Inc Technology	Held	153	0	$51,689	+18.4%	0.03%
AWRE	Aware Inc /Ma/ Technology	Held	43,105	0	$53,881	−32.4%	0.03%
AMKR	Amkor Technology, Inc. Technology	Held	1,526	0	$68,715	+14.1%	0.04%
NTWK	Netsol Technologies Inc Technology	NEW	37,493	NEW	$127,101	NEW	0.08%
MPWR	Monolithic Power Systems Inc Technology	Held	120	0	$131,202	+20.6%	0.08%
DUOT	Duos Technologies Group, Inc. Technology	Held	19,138	0	$131,286	−39.0%	0.08%
GNSS	Genasys Inc. Technology	Held	72,907	0	$132,690	−15.3%	0.08%
ADP	Automatic Data Processing Inc Technology	Reduced	681	-7	$138,365	−21.8%	0.09%
TACT	Transact Technologies Inc Technology	Held	43,333	0	$142,565	−17.8%	0.09%
ORCL	Oracle Corp Technology	Held	1,000	0	$147,110	−24.5%	0.09%
NVMI	Nova Ltd. Technology	Held	359	0	$155,906	+32.2%	0.10%
GSIT	Gsi Technology Inc Technology	Held	30,454	0	$156,533	−17.2%	0.10%
AMPG	AmpliTech Group, Inc. Technology	Held	87,840	0	$166,896	−36.5%	0.11%
RELL	Richardson Electronics, Ltd. Technology	Held	16,092	0	$176,207	+0.6%	0.11%
TRT	Trio-Tech International Technology	Added	31,474	+15,737	$181,919	+74.6%	0.12%
DAIO	Data I/O Corp Technology	Held	74,641	0	$188,841	−20.2%	0.12%
OSS	One Stop Systems, Inc. Technology	Reduced	35,534	-33,822	$268,992	−46.0%	0.17%
CPSH	Cps Technologies Corp/De/ Technology	Held	74,114	0	$277,186	+21.0%	0.18%
SITM	SITIME Corp Technology	Held	850	0	$293,547	−2.2%	0.19%
ACLS	Axcelis Technologies Inc Technology	Held	3,350	0	$311,818	+15.9%	0.20%
ASYS	Amtech Systems Inc Technology	Held	37,816	0	$441,690	−6.9%	0.28%
CAMT	Camtek Ltd Technology	Held	2,943	0	$446,188	+42.6%	0.29%
ACMR	ACM Research, Inc. Technology	Held	11,770	0	$463,149	−0.3%	0.30%
AMBQ	Ambiq Micro, Inc. Technology	NEW	19,216	NEW	$488,278	NEW	0.31%
SHLS	Shoals Technologies Group, Inc. Technology	Reduced	93,670	-2,055	$616,348	−24.3%	0.39%
AEVA	Aeva Technologies, Inc. Technology	Reduced	58,274	-1,290	$766,885	−3.0%	0.49%
INTU	Intuit Inc. Technology	Reduced	2,215	-1,214	$957,721	−57.8%	0.61%
PAYX	Paychex Inc Technology	Reduced	10,934	-5,737	$1,007,240	−46.1%	0.64%
IOT	Samsara Inc. Technology	Reduced	33,164	-3,818	$1,050,967	−19.8%	0.67%
MTSI	MACOM Technology Solutions Holdings, Inc. Technology	Held	4,919	0	$1,092,362	+29.7%	0.70%
ON	On Semiconductor Corp Technology	Added	19,369	+5,717	$1,199,328	+62.2%	0.77%
NXT	Nextpower Inc. Technology	Added	10,250	+1,924	$1,235,637	+70.4%	0.79%
BLND	Blend Labs, Inc. Technology	Added	762,290	+13,316	$1,295,893	−43.1%	0.83%
ENPH	Enphase Energy, Inc. Technology	Added	35,440	+11,305	$1,339,986	+73.2%	0.86%
BMI	Badger Meter Inc Technology	Reduced	9,158	-200	$1,395,221	−14.5%	0.89%
III	Information Services Group Inc. Technology	Added	383,400	+6,746	$1,472,256	−32.4%	0.94%
CGNX	Cognex Corp Technology	Reduced	30,065	-6,195	$1,472,884	+12.9%	0.94%
ALLT	Allot Ltd. Technology	NEW	226,056	NEW	$1,505,532	NEW	0.96%
IBEX	IBEX Ltd Technology	Added	57,758	+1,025	$1,549,069	−28.5%	0.99%
ZS	Zscaler, Inc. Technology	Reduced	11,412	-826	$1,600,989	−41.8%	1.02%