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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 1 of 5  ·  82 positions
# Ticker Company Sector Shares Value ↓ % Port Chg Shares Chg % Period Price ① Since Period ①
1 DRS LEONARDO DRS INC Industrials 261,454.0 $11.6M 1.84% +5K +1.8% $44.52 +3.5%
2 CECO CECO ENVIRONMENTAL CORP Industrials 157,246.0 $9.4M 1.48% +3K +1.8% $59.58 +65.2%
3 BWAY BRAINSWAY LTD Healthcare 618,553.0 $8.2M 1.30% +314K +103.3% $13.29 +12.0%
4 AMSC AMERICAN SUPERCONDUCTOR CORP Industrials 227,558.0 $7.7M 1.22% +12K +5.8% $33.85 +28.2%
5 TTI TETRA TECHNOLOGIES INC DEL Energy 774,099.0 $6.6M 1.04% +14K +1.8% $8.52 +20.2%
6 WLDN WILLDAN GROUP INC Industrials 78,292.0 $6.0M 0.95% +1K +1.8% $76.56 +16.2%
7 COHU COHU INC Technology 191,885.0 $5.9M 0.93% +3K +1.8% $30.62 +126.6%
8 MIR MIRION TECHNOLOGIES INC Industrials 309,110.0 $5.7M 0.91% +6K +1.9% $18.59 +0.1%
9 OII OCEANEERING INTL INC Energy 158,374.0 $5.6M 0.89% +3K +1.9% $35.47 +1.7%
10 BVS BIOVENTUS INC Healthcare 603,258.0 $5.5M 0.87% +215K +55.5% $9.13 -4.6%
11 MAMA MAMAS CREATIONS INC Consumer Defensive 341,657.0 $5.2M 0.83% +6K +1.8% $15.34 +15.8%
12 PATK PATRICK INDS INC Consumer Cyclical 46,228.0 $5.1M 0.81% +287.0 +0.6% $111.07 -21.3%
13 LYTS LSI INDS INC OHIO Technology 274,082.0 $5.1M 0.81% +5K +1.8% $18.60 +43.0%
14 ORN ORION GROUP HLDGS INC Industrials 461,772.0 $5.0M 0.80% +12K +2.7% $10.90 +45.8%
15 TVTX TRAVERE THERAPEUTICS INC Healthcare 161,705.0 $4.8M 0.76% +3K +1.9% $29.71 +85.6%
16 AIP ARTERIS INC Technology 290,319.0 $4.8M 0.76% +5K +1.8% $16.44 +168.3%
17 CXDO CREXENDO INC Communication Services 742,986.0 $4.6M 0.73% +13K +1.8% $6.17 +14.4%
18 ECG EVERUS CONSTR GROUP Industrials 38,098.0 $4.5M 0.71% +706.0 +1.9% $118.06 +33.6%
19 XERS XERIS BIOPHARMA HOLDINGS INC Healthcare 747,769.0 $4.3M 0.69% +13K +1.8% $5.80 +19.8%
20 FEIM FREQUENCY ELECTRS INC Technology 93,026.0 $4.1M 0.65% +2K +1.8% $44.26 +64.5%
Page 1 of 5  ·  82 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%