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Equibles

ESSEX INVESTMENT MANAGEMENT CO LLC

Position in ACMR — ACM Research, Inc.

CIK 201772 BOSTON, MA
Back to ACMR Full portfolio

Position in ACMR

as of Jun 30, 2026 · filed Aug 6, 2026
Position Value
$1,493,495
+$1,030,346 QoQ
Shares Held
11,770
0.0% QoQ
Ownership
0.017%
of shares outstanding
% of Portfolio
0.20%
of 13F equity value
Holder Rank
#176
of 377 holders
Holding Since
Jun 2022
17 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ACMR Over Time

Shares Held

Position Value (USD)

Position in Semiconductor Equipment & Materials

Technology · as of Jun 30, 2026

ESSEX INVESTMENT MANAGEMENT CO LLC holds $27,779,629 across 12 Semiconductor Equipment & Materials names. ACMR ranks #4 (5.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 COHU
Cohu Inc
 131,170 $9,694,774
2 ASML
Asml Holding NV
 3,538 $7,038,638
3 AMBA
Ambarella Inc
 79,997 $6,863,742
4 ACMR
ACM Research, Inc.
This page 		11,770 $1,493,495
5 ASYS
Amtech Systems Inc
 37,761 $871,523
6 ACLS
Axcelis Technologies Inc
 3,350 $634,657
7 CAMT
Camtek Ltd
 2,943 $480,062
8 TRT
Trio-Tech International
 22,115 $272,456

All Filings in ACMR

Export CSV
17 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,493,495 11,770
2026-03-31 $463,149 11,770
2025-12-31 $464,326 11,770
2025-09-30 $460,560 11,770
2025-06-30 $342,657 13,230
2025-03-31 $308,788 13,230
2024-12-31 $199,773 13,230
2024-09-30 $268,569 13,230
2024-06-30 $305,083 13,230
2024-03-31 $385,522 13,230
2023-12-31 $258,514 13,230
2023-09-30 $239,529 13,230
2023-06-30 $173,048 13,230
2023-03-31 $154,791 13,230
2022-12-31 $102,003 13,230
2022-09-30 $164,845 13,230
2022-06-30 $222,660 13,230