Skip to main content
Equibles

CONGRESS ASSET MANAGEMENT CO

Position in ACMR — ACM Research, Inc.

CIK 897378 BOSTON, MA
Back to ACMR Full portfolio

Position in ACMR

as of Sep 30, 2026 · filed Oct 6, 2026
Position Value
$22,426,978
-$5,977,982 QoQ
Shares Held
277,150
+23.8% QoQ
Ownership
0.398%
of shares outstanding
% of Portfolio
0.15%
of 13F equity value
Holder Rank
#1
of 12 holders
Holding Since
Jun 2025
6 quarters on record
Voting authority Sole 75% Shared 0% None 25%

Common Shares in ACMR Over Time

Shares Held

Position Value (USD)

Position in Semiconductor Equipment & Materials

Technology · as of Sep 30, 2026

CONGRESS ASSET MANAGEMENT CO holds $337,589,392 across 9 Semiconductor Equipment & Materials names. ACMR ranks #5 (6.6% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 ASML
Asml Holding NV
 89,548 $162,231,425
2 Q
Qnity Electronics, Inc.
 352,795 $44,360,443
3 TER
Teradyne, Inc
 106,439 $42,672,459
4 ENTG
Entegris Inc
 213,382 $32,873,630
5 ACMR
ACM Research, Inc.
This page 		277,150 $22,426,978
6 LRCX
Lam Research Corp
 51,381 $16,879,172
7 KLAC
Kla Corp
 76,669 $14,945,088
8 NVMI
Nova Ltd.
 2,192 $844,358

All Filings in ACMR

Export CSV
6 filing rows on record
Report Date Value (USD) Shares
2026-09-30 $22,426,978 277,150
2026-06-30 $28,404,960 223,855
2026-03-31 $13,373,609 339,863
2025-12-31 $11,418,763 289,449
2025-09-30 $11,031,646 281,923
2025-06-30 $5,106,858 197,176