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Portfolio (Quarterly) Guide ↗

ESSEX INVESTMENT MANAGEMENT CO LLC

· CIK 0000201772
13F Portfolio $632M AUM 305 positions Filed May 11, 2026 EDGAR ↗ ← All Funds
Q1 2026 Q4 2025 · All 28 New 82 Added 84 Reduced 29 Exited
Page 2 of 16  ·  305 positions
# Ticker Company Sector Shares Value ↓ % Port Chg Shares Chg % Period Price ① Since Period ①
21 PRIM PRIMORIS SVCS CORP Industrials 48,177.0 $6.9M 1.09% -3K -5.5% $143.04 -29.2%
22 ADPT ADAPTIVE BIOTECHNOLOGIES CORP Healthcare 493,403.0 $6.8M 1.08% -131K -21.0% $13.88 +26.3%
23 TTI TETRA TECHNOLOGIES INC DEL Energy 774,099.0 $6.6M 1.04% +14K +1.8% $8.52 +20.2%
24 GS GOLDMAN SACHS GROUP INC Financial Services 7,556.0 $6.4M 1.01% -1K -12.7% $845.99 +29.6%
25 WLDN WILLDAN GROUP INC Industrials 78,292.0 $6.0M 0.95% +1K +1.8% $76.56 +21.1%
26 COHU COHU INC Technology 191,885.0 $5.9M 0.93% +3K +1.8% $30.62 +126.6%
27 MSFT MICROSOFT CORP Technology 15,791.0 $5.8M 0.93% -2K -10.3% $370.17 +2.5%
28 MIR MIRION TECHNOLOGIES INC Industrials 309,110.0 $5.7M 0.91% +6K +1.9% $18.59 +0.1%
29 AMZN AMAZON COM INC Consumer Cyclical 27,208.0 $5.7M 0.90% -2K -5.6% $208.27 +17.3%
30 OII OCEANEERING INTL INC Energy 158,374.0 $5.6M 0.89% +3K +1.9% $35.47 +1.7%
31 WMS ADVANCED DRAIN SYS INC DEL Industrials 40,569.0 $5.6M 0.88% -2K -5.3% $137.13 +1.5%
32 BVS BIOVENTUS INC Healthcare 603,258.0 $5.5M 0.87% +215K +55.5% $9.13 -4.6%
33 MAMA MAMAS CREATIONS INC Consumer Defensive 341,657.0 $5.2M 0.83% +6K +1.8% $15.34 +15.8%
34 BWXT BWX TECHNOLOGIES INC Industrials 25,555.0 $5.2M 0.83% -2K -6.2% $204.49 +0.4%
35 PATK PATRICK INDS INC Consumer Cyclical 46,228.0 $5.1M 0.81% +287.0 +0.6% $111.07 -21.3%
36 LYTS LSI INDS INC OHIO Technology 274,082.0 $5.1M 0.81% +5K +1.8% $18.60 +43.0%
37 ORN ORION GROUP HLDGS INC Industrials 461,772.0 $5.0M 0.80% +12K +2.7% $10.90 +45.8%
38 NVCR NOVOCURE LTD Healthcare 452,370.0 $4.9M 0.78% NEW $10.90 +31.0%
39 TVTX TRAVERE THERAPEUTICS INC Healthcare 161,705.0 $4.8M 0.76% +3K +1.9% $29.71 +85.6%
40 AIP ARTERIS INC Technology 290,319.0 $4.8M 0.76% +5K +1.8% $16.44 +168.3%
Page 2 of 16  ·  305 positions

Period Price is the implied market price on the last day of the reporting period, calculated as reported value ÷ shares held. It is not the fund's purchase price or cost basis — the fund may have initiated or added to the position at any point during the quarter at a different price. Since Period shows the price change from that quarter-end snapshot to today's last price — it reflects stock movement after the report date, not the fund's actual return.

Sector Allocation
Industrials 26.2%
Technology 25.6%
Healthcare 21.5%
Financial Services 5.9%
Consumer Defensive 4.8%
Energy 4.4%
Communication Services 3.9%
Consumer Cyclical 3.7%
Basic Materials 2.3%
Utilities 1.5%