ESSEX INVESTMENT MANAGEMENT CO LLC

CIK 0000201772 · Q2 2026

13F Equity AUM

$763.4M

+20.8% QoQ

Positions

305

+1 QoQ

AUM Rank

#2,869

Top 33%

Skill Alpha (FF)

-0.6%/yr^ns

No Clear Edge

Rank #3,674 · Top 44%

vs S&P +1.1%/yr (unadj.)

Quarters Tracked

~13 years

Portfolio Concentration

Top 5: 11.5%Top 10: 20.1%Top 20: 33.1%

TSEM3.6%

LINC2.2%

KINIKSA PHARMACEUTICALS INTL P2.0%

OUST1.9%

LGND1.8%

CECO1.8%

UAO1.8%

AIP1.8%

MIRM1.6%

AGX1.6%

Others (295)79.9%

HHI (Herfindahl-Hirschman Index) measures portfolio concentration. Low (<1500) = diversified, Moderate (1500-2500), High (>2500) = concentrated bets.

Sector Allocation

Technology29.2%

Industrials24.1%

Healthcare19.6%

Financial Services5.8%

Consumer Defensive5.4%

Consumer Cyclical4.8%

Energy4.1%

Unclassified2.8%

Other4.4%

Portfolio weight by GICS sector based on latest 13F filing. Sectors below 2% are grouped as “Other.”

Position Sizing

Positions: 305Median: 0.11%Avg: 0.33%

0–0.5%

224(23.7%)

0.5–1%

57(39.1%)

1–3%

23(33.7%)

3–5%

1(3.6%)

5%+

0(0.0%)

Count of positions per weight bucket — (%) = combined portfolio weight

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Portfolio Overlap

Shared: 0Unique: 305vs 20 funds

0%Low

305

Fund positions

Consensus CUSIPs

Jaccard similarity of this fund’s portfolio vs the consensus of top 20 funds by AUM. Low (<15%) = contrarian, Moderate (15-40%), High (>40%) = follows the crowd.

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Position Changes This Quarter

New27Increased30Decreased155Exited26

New Positions

WERN1.3%

+232K

XMTR0.7%

+56K

BXC0.7%

+87K

TILE0.6%

+123K

PGEN0.5%

+706K

NUVB0.5%

+671K

FET0.4%

+67K

CRWD0.4%

+4K

BRCC0.4%

+2.6M

KVHI0.4%

+293K

Increased

BLND0.3%

+492K(+65%)

III0.4%

+425K(+111%)

LTRX0.5%

+320K(+93%)

APYX0.7%

+235K(+26%)

LGCY0.5%

+186K(+130%)

CODA0.4%

+133K(+70%)

OSG0.4%

+121K(+29%)

BDSX0.7%

+110K(+83%)

OCUL0.6%

+89K(+23%)

AVPT0.8%

+73K(+15%)

Decreased

RPID0.1%

-521,235(-59%)

INVN0.2%

-252,170(-34%)

AMPX0.5%

-160,846(-36%)

RJR10.3%

-68,135(-4%)

COHU1.3%

-60,715(-32%)

CPSH0.0%

-52,590(-71%)

IDN0.3%

-49,678(-9%)

CRGOW0.2%

-42,422(-4%)

WK0.0%

-35,605(-98%)

GHM1.5%

-34,889(-27%)

Exited

-165,665

-48,177

-603,258

-198,985

-103,177

-17,854

-217,075

-279,551

-299,332

-697,836

Quarter-over-quarter changes compared to prior 13F filing. New = first appearance; Exited = no longer held.

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Holdings

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