ESSEX INVESTMENT MANAGEMENT CO LLC
All 13F Filings
- Location
- Boston, MA
- Most recent 13F
- Q3 2026
- Holdings value ($000)
- 674,703
- Description
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- Website
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- Founded
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- Chairman
- —
- CEO
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- All SEC filings
- View on sec.gov
Sector allocation over time (stocks only)
Stacked by quarter. Hover to see detailed sector breakdown for any quarter.
| Quarter | Date Filed | Holdings | Value ($000) | Form Type | Name |
|---|---|---|---|---|---|
| Q3 2026 | 10/19/2026 | 301 | 674,703 | 13F-HR | ESSEX INVESTMENT MANAGEMENT CO LLC |
| Q2 2026 | 8/6/2026 | 306 | 763,374 | 13F-HR | ESSEX INVESTMENT MANAGEMENT CO LLC |
| Q1 2026 | 5/11/2026 | 305 | 631,737 | 13F-HR | ESSEX INVESTMENT MANAGEMENT CO LLC |
| Q4 2025 | 2/13/2026 | 306 | 655,942 | 13F-HR | ESSEX INVESTMENT MANAGEMENT CO LLC |
| Q3 2025 | 11/6/2025 | 299 | 653,417 | 13F-HR | ESSEX INVESTMENT MANAGEMENT CO LLC |
| Q2 2025 | 8/12/2025 | 298 | 549,966 | 13F-HR | ESSEX INVESTMENT MANAGEMENT CO LLC |
| Q2 2014 | 7/23/2014 | 354 | 678,918 | 13F-HR | ESSEX INVESTMENT MANAGEMENT CO LLC |
| Q1 2014 | 4/28/2014 | 344 | 686,832 | 13F-HR | ESSEX INVESTMENT MANAGEMENT CO LLC |
| Q4 2013 | 1/28/2014 | 360 | 707,369 | 13F-HR | ESSEX INVESTMENT MANAGEMENT CO LLC |
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Money flow by instrument (QoQ, ex-options)
| Type | Value ($000) | Share % | Inflow | Outflow | Net |
|---|---|---|---|---|---|
| Stocks | 673.2 K | 99.8% | 0 | 86.83 K | -86.83 K |
| ETFs | 1.494 K | 0.2% | 0 | 1.849 K | -1.849 K |
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Fund Snapshot
Q3 2026
Latest filed
10/19/2026
Total value ($000)
674,703
Holdings
301
QoQ value change ($000)
-88,671
(-11.6%)
Value = total reported 13F value ($000), Holdings = number of positions.
13F Value over time
Holdings count over time
Sector allocation (latest, stocks only)
Methodology:
sector allocation is stocks-only;
instrument flow table is ex-options;
options exposure is shown separately.
Details.