1y return+49.8%S&P 500 +20.9%
3y return+95.1%S&P 500 +68.5%
5y return+58.4%S&P 500 +74.5%
10y return+274.8%S&P 500 +256.5%
These returns are for its stock picks as disclosed on Form 13F: last quarter's holdings, valued at this quarter's prices. They miss trades within each quarter, short positions, options, bonds, cash and fees, so they aren't the returns its clients got.
$100 invested in its stock picks
Since June 30, 2016: $375 against $357 in the S&P 500.2
Essex Investment Management Co LLCS&P 500 (SPY)
Top holdings
At the end of June 30, 2026. Change is in shares since the quarter before.2
| Stock | Value | Share of portfolio | Change |
|---|---|---|---|
| Tower Semiconductor LtdCUSIP M87915274 | $27.5M | 3.6% | −9.0% |
| LINCLincoln Edl Svcs Corp | $17.0M | 2.2% | −4.2% |
| Kiniksa Pharmaceuticals Intl PCUSIP G52694109 | $15.4M | 2.0% | −3.2% |
| OUSTOuster Inc | $14.1M | 1.9% | +22.5% |
| LGNDLigand Pharmaceuticals Inc | $13.8M | 1.8% | −25.5% |
| CECOCeco Environmental Corp | $13.6M | 1.8% | −4.3% |
| STRLSterling Infrastructure Inc | $13.6M | 1.8% | −49.6% |
| AIPArteris Inc | $13.5M | 1.8% | −4.4% |
| MIRMMirum Pharmaceuticals Inc | $12.4M | 1.6% | −2.5% |
| AGXArgan Inc | $12.4M | 1.6% | −3.9% |
| GHMGraham Corp | $11.6M | 1.5% | −27.2% |
| DRSLeonardo Drs Inc | $10.7M | 1.4% | −4.3% |
| ADPTAdaptive Biotechnologies Corp | $10.1M | 1.3% | −4.2% |
| WERNWerner Enterprises Inc | $10.1M | 1.3% | New |
| HCIHci Group Inc | $9.9M | 1.3% | −2.4% |
| GEVGe Vernova Inc | $9.7M | 1.3% | |
| COHUCohu Inc | $9.7M | 1.3% | −31.6% |
| AAPLApple Inc | $9.4M | 1.2% | |
| AMSCAmerican Superconductor Corp | $9.2M | 1.2% | −2.5% |
| BWAYBrainsway Ltd | $9.2M | 1.2% | −4.2% |
| TTITetra Technologies Inc Del | $8.4M | 1.1% | −4.3% |
| LYTSLsi Inds Inc Ohio | $7.9M | 1.0% | +7.9% |
| MRVLMarvell Technology Inc | $7.7M | 1.0% | −28.4% |
| KTOSKratos Defense & Sec Solutions | $7.7M | 1.0% | −3.3% |
| TVTXTravere Therapeutics Inc | $7.6M | 1.0% | −17.2% |
Best picks still held
How each current holding has done since the quarter it first appeared in its filings (up to six years back).
| Stock | Held since | Return since | Now worth |
|---|---|---|---|
| STRLSterling Infrastructure Inc | June 30, 2020 | +7917.2% | $13.6M |
| GHMGraham Corp | September 30, 2022 | +1308.3% | $11.6M |
| CECOCeco Environmental Corp | June 30, 2020 | +1277.0% | $13.6M |
| LINCLincoln Edl Svcs Corp | June 30, 2020 | +1179.5% | $17.0M |
| AGXArgan Inc | June 30, 2024 | +991.5% | $12.4M |
| Tower Semiconductor LtdCUSIP M87915274 | March 31, 2024 | +679.2% | $27.5M |
| GEVGe Vernova Inc | June 30, 2024 | +585.0% | $9.7M |
| AIPArteris Inc | September 30, 2024 | +529.4% | $13.5M |
| AMSCAmerican Superconductor Corp | September 30, 2023 | +449.8% | $9.2M |
| GSGoldman Sachs Group Inc | June 30, 2020 | +411.8% | $7.6M |
Sold off last quarter
- GSATGlobalstar Inc was $11.0M
- PRIMPrimoris Svcs Corp was $6.9M
- BVSBioventus Inc was $5.5M
- SNDXSyndax Pharmaceuticals Inc was $4.6M
- AGIOAgios Pharmaceuticals Inc was $3.5M
- EVEREverquote Inc was $3.3M
- CRMSalesforce Inc was $3.3M
- VREXVarex Imaging Corp was $3.0M
- INFUInfusystem Hldgs Inc was $2.8M
- CCLDCarecloud Inc was $2.5M
Quarter by quarter
| Quarter | Its picks | S&P 500 |
|---|---|---|
| June 30, 2026 | +23.1% | +14.8% |
| March 31, 2026 | +0.6% | −4.6% |
| December 31, 2025 | +1.8% | +2.4% |
| September 30, 2025 | +18.8% | +7.8% |
| June 30, 2025 | +20.8% | +10.5% |
| March 31, 2025 | −10.4% | −4.6% |
| December 31, 2024 | +5.1% | +2.1% |
| September 30, 2024 | +9.5% | +5.4% |
| June 30, 2024 | −1.5% | +4.0% |
| March 31, 2024 | +6.9% | +10.0% |
| December 31, 2023 | +10.0% | +11.2% |
| September 30, 2023 | −9.7% | −3.6% |
| June 30, 2023 | +3.1% | +8.3% |
| March 31, 2023 | +5.5% | +7.0% |
| December 31, 2022 | +2.5% | +7.1% |
| September 30, 2022 | +0.2% | −5.3% |
| June 30, 2022 | −20.7% | −16.5% |
| March 31, 2022 | −8.4% | −4.9% |
| December 31, 2021 | +3.7% | +10.7% |
| September 30, 2021 | −3.4% | +0.3% |
Sources
Every number on this page points here. Each one links to the public record.
- 1SEC EDGAR: Essex Investment Management Co LLC Form 13F filingshttps://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=201772&type=13F-HR&dateb=&owner=include&count=40CIK 201772
- 2SEC: 13F for the quarter ended June 30, 2026https://www.sec.gov/Archives/edgar/data/201772/000020177226000005/Filed August 6, 2026 · accession 0000201772-26-000005