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Equibles

ESSEX INVESTMENT MANAGEMENT CO LLC

Position in ASYS — Amtech Systems Inc

CIK 201772 BOSTON, MA
Back to ASYS Full portfolio

Position in ASYS

as of Jun 30, 2026 · filed Aug 6, 2026
Position Value
$871,523
+$429,833 QoQ
Shares Held
37,761
-0.1% QoQ
Ownership
0.216%
of shares outstanding
% of Portfolio
0.12%
of 13F equity value
Holder Rank
#46
of 111 holders
Holding Since
Dec 2020
17 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ASYS 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. ASYS ranks #5 (3.1% 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.
 11,770 $1,493,495
5 ASYS
Amtech Systems Inc
This page 		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 ASYS

Export CSV
17 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $871,523 37,761
2026-03-31 $441,690 37,816
2025-12-31 $474,590 37,816
2025-09-30 $350,176 37,816
2023-12-31 $602,175 143,375
2023-09-30 $2,647,469 347,437
2023-06-30 $3,389,020 354,500
2023-03-31 $2,974,743 311,818
2022-12-31 $2,026,623 266,661
2022-09-30 $2,286,542 269,005
2022-06-30 $1,909,833 261,621
2022-03-31 $2,543,278 252,811
2021-12-31 $2,382,265 241,120
2021-09-30 $2,548,855 222,997
2021-06-30 $1,911,081 198,245
2021-03-31 $1,739,951 147,204
2020-12-31 $1,039,014 162,855