ESSEX INVESTMENT MANAGEMENT CO LLC
CIK 201772 · Holdings on Sep 30, 2025 · First reported Nov 6, 2025
Top ten holdings
Q3 2025- KTOS3.41%
- STRL2.37%
- AMSC2.23%
- TSEM2.17%
- INSM1.92%
- DRS1.82%
- HCI1.77%
- LGND1.66%
- KNSA1.47%
- ADPT1.46%
Share classes counted separately20.28%
Portfolio value by quarter
What changed this quarter?
Within preview · weight change- INSMWeight increased · +0.71 pp1.21% → 1.92%Shares +20.73K (+31.25%)
- WMSWeight increased · +0.71 pp0.20% → 0.91%Shares +33.27K (+345.74%)
- TSEMWeight increased · +0.63 pp1.54% → 2.17%Shares +1.04K (+0.53%)
Weight = security value ÷ total reported holdings value. Changes are in percentage points; price moves also affect weights, so they are not trade sizes.
Top 10 holdings 30
USD · B = billion · M = million; expand a row for exact values| # | Security | Value | Weight | Quantity | Weight / quantity change | Activity | |
|---|---|---|---|---|---|---|---|
| 01 | KTOSKRATOS DEFENSE & SECURITY View history and evidence | $22.30M | 3.41% | 244.06K shares | 2.96% → 3.41%+0.45 pp -106.30K (-30.34%) | Reduced | ↗▾ |
| 02 | STRLSTERLING INFRASTRUCTURE INC View history and evidence | $15.50M | 2.37% | 45.64K shares | 2.23% → 2.37%+0.14 pp -7.49K (-14.09%) | Reduced | ↗▾ |
| 03 | AMSCAMERICAN SUPERCONDUCTOR CORP View history and evidence | $14.59M | 2.23% | 245.58K shares | 2.31% → 2.23%-0.08 pp -100.46K (-29.03%) | Reduced | ↗▾ |
| 04 | TSEMTOWER SEMICONDUCTOR LTD View history and evidence | $14.20M | 2.17% | 196.34K shares | 1.54% → 2.17%+0.63 pp +1.04K (+0.53%) | Added | ↗▾ |
| 05 | INSMINSMED INC View history and evidence | $12.54M | 1.92% | 87.08K shares | 1.21% → 1.92%+0.71 pp +20.73K (+31.25%) | Added | ↗▾ |
| 06 | DRSLEONARDO DRS INC View history and evidence | $11.92M | 1.82% | 262.55K shares | 2.15% → 1.82%-0.33 pp +8.51K (+3.35%) | Added | ↗▾ |
| 07 | HCIHCI GROUP INC View history and evidence | $11.58M | 1.77% | 60.32K shares | 1.66% → 1.77%+0.11 pp +337 (+0.56%) | Added | ↗▾ |
| 08 | LGNDLIGAND PHARMACEUTICALS View history and evidence | $10.83M | 1.66% | 61.14K shares | 1.26% → 1.66%+0.40 pp +332 (+0.55%) | Added | ↗▾ |
| 09 | KNSAKINIKSA PHARMACEUTICALS INTE View history and evidence | $9.60M | 1.47% | 247.30K shares | 0.86% → 1.47%+0.61 pp +75.86K (+44.25%) | Added | ↗▾ |
| 10 | ADPTADAPTIVE BIOTECHNOLOGIES View history and evidence | $9.55M | 1.46% | 638.46K shares | 1.31% → 1.46%+0.15 pp +21.16K (+3.43%) | Added | ↗▾ |
Options overlay 0
No options reported this quarter.
Exited positions 29
| Security | Type | Shares out | Value out | Previous filing | This filing |
|---|---|---|---|---|---|
| BPMC BLUEPRINT MEDICINES CORP | Non-derivative | -36,291 | -$4.65M | SEC filing ↗ | SEC filing ↗ |
| NUTX NUTEX HEALTH INC | Non-derivative | -32,403 | -$4.03M | SEC filing ↗ | SEC filing ↗ |
| MRC MRC GLOBAL INC | Non-derivative | -264,799 | -$3.63M | SEC filing ↗ | SEC filing ↗ |
3 / 29 preview exits. Up to 30 exit records are previewed. Exit means absent from the current filing; execution date, price and proceeds are unknown.
Every number has a source.
CIK 201772 · Period 2025-09-30
Data loaded 2026-09-23 · First reported 2025-11-06
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 653417423
}Research all 299 reported holdings.
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