ESSEX INVESTMENT MANAGEMENT CO LLC
CIK 0000201772 · BOSTON, MA · Quarter end: 2026-06-30 · Filed on: 2026-08-06 · Open the SEC source ↗
Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$763.4M
2026 Q2
Positions
306
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
20.1%
Est. Net Flow (Q)
—
2026 Q2
Top Holdings
TSEM
TOWER SEMICONDUCTOR LTD
3.6%
LINC
LINCOLN EDL SVCS CORP
2.2%
KNSA
KINIKSA PHARMACEUTICALS INTL P
2.0%
OUST
OUSTER INC
1.9%
LGND
LIGAND PHARMACEUTICALS INC
1.8%
CECO
CECO ENVIRONMENTAL CORP
1.8%
STRL
STERLING INFRASTRUCTURE INC
1.8%
AIP
ARTERIS INC
1.8%
New / Increased
No prior quarter data
Reduced / Exited
No prior quarter data
Read the 2026-Q2 quarterly report · 13F Filing Calendar
13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.