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Equibles

SIMPLEX TRADING, LLC

Position in ACMR — ACM Research, Inc.

CIK 1488542 CHICAGO, IL
Back to ACMR Full portfolio

Position in ACMR

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$5,623,257
+$4,660,599 QoQ
Shares Held
44,316
+81.1% QoQ
Ownership
0.064%
of shares outstanding
% of Portfolio
0.18%
of 13F equity value
Holder Rank
#95
of 377 holders
Holding Since
Mar 2020
20 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

SIMPLEX TRADING, LLC holds $115,572,420 across 22 Semiconductor Equipment & Materials names. ACMR ranks #4 (4.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 KLAC
Kla Corp
 123,044 $37,123,605
2 ASML
Asml Holding NV
 16,406 $32,638,750
3 AMAT
Applied Materials Inc /De
 32,303 $23,355,069
4 ACMR
ACM Research, Inc.
This page 		44,316 $5,623,257
5 AMKR
Amkor Technology, Inc.
 49,051 $4,229,667
6 ENTG
Entegris Inc
 13,273 $2,387,281
7 TER
Teradyne, Inc
 3,406 $1,647,959
8 VECO
Veeco Instruments Inc
 20,077 $1,521,836

All Filings in ACMR

Export CSV
20 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $5,623,257 44,316
2026-03-31 $962,658 24,464
2025-12-31 $4,377,056 110,952
2025-09-30 $2,935,454 75,018
2025-06-30 $2,478,889 95,710
2025-03-31 $2,570,387 110,128
2024-12-31 $2,135,683 141,436
2024-09-30 $706,967 34,826
2024-06-30 $1,159,110 50,265
2023-12-31 $1,311,602 67,124
2023-03-31 $672,340 57,465
2022-12-31 $57,532 7,462
2022-09-30 $445,008 35,715
2022-06-30 $224,815 13,358
2022-03-31 $1,689,152 81,641
2021-12-31 $115,540 1,355
2021-03-31 $846,679 10,480
2020-09-30 $2,080,114 30,103
2020-06-30 $296,148 4,749
2020-03-31 $150,359 5,078