What is SEC Form 13F? Ultimate Guide to Institutional Equity Filings
Learn how SEC Form 13F filings work, the $100M threshold, 45-day reporting lag, and how to track top hedge fund holdings.
CIK: 0000201772
Total reported value
$763.4M
$763.4M
306 檔
9.6%
The Q4 2025 SEC filing reveals that Essex Investment Management Co LLC held a total portfolio value of $763.4M, covering 306 public equity positions.
In Q4 2025, Essex Investment Management Co LLC adopted a defensive or profit-taking posture, trimming 14 positions and completely liquidating 18 holdings to manage risk exposure.
Showing top 200 holdings (of 306 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | TSEM | Tower Semiconductor Ltd. | Stock-Tech | 3.45% | +0.38% | -1.89% | |
| 2 | KTOS | Kratos Defense & Security | Stock-Industrials | 2.20% | -0.77% | -22.07% | |
| 3 | STRL | Sterling Infrastructure Inc | Stock-Industrials | 2.09% | -0.29% | -2.08% | |
| 4 | HCI | Hci Group Inc | Stock-Other | 1.73% | -0.12% | -1.84% | |
| 5 | LGND | Ligand Pharmaceuticals | Stock-Healthcare | 1.73% | -0.05% | -1.84% | |
| 6 | INSM | Insmed Inc | Stock-Healthcare | 1.66% | -1.02% | -28.31% | |
| 7 | KNSA | Kiniksa Pharmaceuticals International, plc | Stock-Other | 1.58% | +0.12% | +1.49% | |
| 8 | GSAT | Globalstar Inc | Stock-Other | 1.56% | -1.74% | EXIT | |
| 9 | ADPT | Adaptive Biotechnologies | Stock-Other | 1.55% | +0.25% | -2.23% | |
| 10 | AAPL | Apple Inc | Stock-Tech | 1.45% | -0.08% | -3.84% | |
| 11 | LINC | Lincoln Educational Services | Stock-Other | 1.43% | -0.07% | -2.15% | |
| 12 | CECO | Ceco Environmental CORP | Stock-Other | 1.41% | +0.31% | -2.23% | |
| 13 | GHM | Graham CORP | Stock-Other | 1.38% | -0.09% | -2.12% | |
| 14 | MIRM | Mirum Pharmaceuticals Inc | Stock-Other | 1.34% | +0.04% | -1.89% | |
| 15 | DRS | Leonardo Drs Inc | Stock-Industrials | 1.33% | -0.44% | -2.17% | |
| 16 | AGX | Argan Inc | Stock-Industrials | 1.32% | +0.23% | -2.37% | |
| 17 | MSFT | Microsoft CORP | Stock-Tech | 1.30% | -0.16% | -3.57% | |
| 18 | WLDN | Willdan Group Inc | Stock-Other | 1.22% | -0.17% | -2.53% | |
| 19 | GS | Goldman Sachs Group Inc | Stock-Financials | 1.16% | -0.01% | -3.71% | |
| 20 | TTI | Tetra Technologies Inc | Stock-Other | 1.09% | +0.06% | -2.13% | |
| 21 | MIR | Mirion Technologies Inc | Stock-Industrials | 1.08% | -0.22% | -2.30% | |
| 22 | XZO | Exzeo Group Inc | Stock-Other | 1.08% | -0.08% | — | |
| 23 | AVPT | Avepoint Inc | Stock-Other | 1.08% | +0.09% | -1.97% | |
| 24 | AEM | Agnico Eagle Mines LTD | Stock-Materials | 1.03% | -0.46% | -2.01% | |
| 25 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 1.01% | -0.06% | -1.54% | |
| 26 | BBNX | Beta Bionics Inc | Stock-Other | 1.01% | — | -2.16% | |
| 27 | PRIM | Primoris Services CORP | Stock-Industrials | 0.96% | -1.09% | EXIT | |
| 28 | EVER | Everquote Inc - Class A | Stock-Other | 0.95% | -0.53% | EXIT | |
| 29 | WMS | Advanced Drainage Systems In | Stock-Industrials | 0.95% | -0.05% | -0.15% | |
| 30 | AMSC | American Superconductor CORP | Stock-Other | 0.94% | -0.01% | -12.39% | |
| 31 | TVTX | Travere Therapeutics Inc | Stock-Other | 0.92% | +0.24% | -2.02% | |
| 32 | UVE | Universal Insurance Holdings | Stock-Other | 0.91% | — | -2.14% | |
| 33 | AMBA | Ambarella, Inc. | Stock-Tech | 0.91% | +0.23% | -1.77% | |
| 34 | BWAY | Brainsway Ltd-adr | Stock-Other | 0.88% | -0.10% | -2.09% | |
| 35 | XERS | Xeris Biopharma Holdings Inc | Stock-Other | 0.88% | +0.05% | -2.07% | |
| 36 | GEV | GE Vernova Inc | Stock-Industrials | 0.86% | +0.12% | -9.28% | |
| 37 | CRM | Salesforce Inc | Stock-Tech | 0.77% | -0.53% | EXIT | |
| 38 | PATK | Patrick Industries Inc | Stock-Consumer Disc | 0.76% | +0.17% | -1.99% | |
| 39 | LYTS | Lsi Industries Inc | Stock-Other | 0.75% | +0.22% | -2.14% | |
| 40 | FEIM | Frequency Electronics Inc | Stock-Other | 0.75% | +0.12% | -2.17% | |
| 41 | PEGA | Pegasystems Inc | Stock-Tech | 0.72% | -0.24% | -1.53% | |
| 42 | CXDO | Crexendo Inc | Stock-Other | 0.72% | -0.03% | -2.10% | |
| 43 | BWXT | Bwx Technologies Inc | Stock-Industrials | 0.72% | -0.18% | -1.57% | |
| 44 | OCUL | Ocular Therapeutix Inc | Stock-Other | 0.71% | +0.09% | -2.09% | |
| 45 | ANGO | Angiodynamics Inc | Stock-Other | 0.71% | — | +10.12% | |
| 46 | MAMA | Mama's Creations Inc | Stock-Other | 0.69% | -0.07% | -1.83% | |
| 47 | GWRE | Guidewire Software Inc | Stock-Tech | 0.69% | -0.16% | -1.69% | |
| 48 | GMED | Globus Medical Inc - A | Stock-Healthcare | 0.68% | -0.17% | -2.31% | |
| 49 | ORN | Orion Group Holdings Inc | Stock-Other | 0.68% | +0.18% | +44.78% | |
| 50 | WGO | Winnebago Industries | Stock-Other | 0.68% | — | — |
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | TSEM | Tower Semiconductor Ltd. | +1.3% | -1.89% | Trim |
| 2 | WK | Workiva Inc | +0.5% | +5328.57% | Add |
| 3 | GSAT | Globalstar Inc | +0.5% | -13.87% | Trim |
| 4 | AXSM | Axsome Therapeutics Inc | +0.5% | +5382.97% | Add |
| 5 | TTI | Tetra Technologies Inc | +0.4% | -2.13% | Trim |
| 6 | BBNX | Beta Bionics Inc | +0.3% | -2.16% | Trim |
| 7 | TVTX | Travere Therapeutics Inc | +0.3% | -2.02% | Trim |
| 8 | ORN | Orion Group Holdings Inc | +0.3% | +44.78% | Add |
| 9 | RAIL | Freightcar America Inc | +0.3% | +68.69% | Add |
| 10 | FEIM | Frequency Electronics Inc | +0.3% | -2.17% | Trim |
| 11 | INSM | Insmed Inc | -0.3% | -28.31% | Trim |
| 12 | MASS | 908 Devices Inc | -0.3% | -2.29% | Trim |
| 13 | STRL | Sterling Infrastructure Inc | -0.3% | -2.08% | Trim |
| 14 | RRC | Range Resources CORP | -0.4% | -98.37% | Trim |
| 15 | DRS | Leonardo Drs Inc | -0.5% | -2.17% | Trim |
| 16 | AMPX | Amprius Technologies Inc | -0.5% | -25.90% | Trim |
| 17 | KTOS | Kratos Defense & Security | -1.2% | -22.07% | Trim |
| 18 | AMSC | American Superconductor CORP | -1.3% | -12.39% | Trim |
| 19 | XZO | Exzeo Group Inc | — | NEW | New buy |
| 20 | CLPT | Clearpoint Neuro Inc | — | EXIT | Sold out |
| 21 | HA7 | Enviri CORP | — | EXIT | Sold out |
| 22 | WGO | Winnebago Industries | — | NEW | New buy |
| 23 | PENG | Penguin Solutions Inc | — | EXIT | Sold out |
| 24 | STKL | Sunopta Inc | — | EXIT | Sold out |
| 25 | THRM | Gentherm Inc | — | NEW | New buy |
| 26 | OSPN | Onespan Inc | — | EXIT | Sold out |
| 27 | CMCO | Columbus Mckinnon Corp/ny | — | NEW | New buy |
| 28 | SMWB | Similarweb Ltd. | — | EXIT | Sold out |
| 29 | DAKT | Daktronics Inc | — | NEW | New buy |
| 30 | OSG | Octave Specialty Group Inc | — | NEW | New buy |
| 31 | VREX | Varex Imaging CORP | — | NEW | New buy |
| 32 | WOR | Worthington Enterprises Inc | — | EXIT | Sold out |
| 33 | AMTB | Amerant Bancorp Inc | — | NEW | New buy |
| 34 | CVLG | Covenant Logistics Group Inc | — | EXIT | Sold out |
| 35 | BVS | Bioventus Inc - A | — | NEW | New buy |
| 36 | TRNS | Transcat Inc | — | EXIT | Sold out |
| 37 | MTRX | Matrix Service Co | — | EXIT | Sold out |
| 38 | ✓ | — | EXIT | Sold out | |
| 39 | ASPN | Aspen Aerogels Inc | — | EXIT | Sold out |
| 40 | PROF | Profound Medical CORP | — | NEW | New buy |
| 41 | III | Information Services Group | — | NEW | New buy |
| 42 | IDN | Intellicheck Inc | — | NEW | New buy |
| 43 | AVD | American Vanguard CORP | — | EXIT | Sold out |
| 44 | CCLD | Carecloud Inc | — | NEW | New buy |
| 45 | ✓ | — | NEW | New buy | |
| 46 | PESI | Perma-fix Environmental Svcs | — | EXIT | Sold out |
| 47 | EXEL | Exelixis Inc | — | EXIT | Sold out |
| 48 | FVRR | Fiverr International Ltd. | — | EXIT | Sold out |
| 49 | HVT | Haverty Furniture | — | EXIT | Sold out |
| 50 | AISP | Airship Ai Holdings Inc | — | EXIT | Sold out |
According to official SEC Form 13F filings, Essex Investment Management Co LLC reported a total U.S. public equity portfolio value of $763.4M across 306 disclosed positions in Q4 2025.
Expert Analysis & Guides for Tracking Wall Street Smart Money Movements
Learn how SEC Form 13F filings work, the $100M threshold, 45-day reporting lag, and how to track top hedge fund holdings.
In terms of portfolio concentration, the top 5 core holdings (including TSEM, KTOS, STRL) accounted for 9.6% of total reported equity market value during Q4 2025.
Top New Position Initiated
XZO
市值: $7.1M
Top Position Liquidated / Trimmed
CLPT
前期市值: $5.1M
During Q4 2025, Essex Investment Management Co LLC's top holdings by market value included TSEM (3.5%)、KTOS (2.2%)、STRL (2.1%). The largest single position, TSEM, represented 3.5% of total portfolio value.
In Q4 2025, Essex Investment Management Co LLC made 50 total portfolio adjustments, initiating 14 new buys, adding to 4 positions, trimming 14 holdings, and fully liquidating 18 stocks.
All holding records on this page are fetched directly from the U.S. Securities and Exchange Commission (SEC) EDGAR system (Form 13F-HR). AlphaSMO parses CUSIP identifiers and formats data into Schema.org-compliant datasets.
Understand SEC Form 4 insider disclosures for corporate officers, directors, and 10% owners to track executive transactions.
Understand Rule 144 restricted stock sale notices to spot planned insider liquidations before market sell pressure arrives.
Explore the 5% beneficial ownership threshold, 13D vs 13G filing differences, and recent SEC accelerated deadline rules.
Best practices for analyzing 13F quarterly changes without getting misled by stock splits, options, or market valuation drift.
Learn how AlphaSMO's flagship signal detects high-conviction stocks where 13F hedge funds and corporate insiders buy at the same time.