Position in ACMR
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$962,658
-$3,414,398 QoQ
Shares Held
24,464
-78.0% QoQ
Ownership
0.037%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
19 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in ACMR Over Time
Shares Held
Position Value (USD)
Position in Semiconductor Equipment & Materials
Technology · as of Mar 31, 2026SIMPLEX TRADING, LLC holds $50,469,092 across 17 Semiconductor Equipment & Materials names. ACMR ranks #7 (1.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ASML |
Asml Holding NV
|
16,741 | $22,112,015 | |
| 2 | AXTI |
Axt Inc
|
173,574 | $9,890,246 | |
| 3 | CAMT |
Camtek Ltd
|
43,213 | $6,551,522 | |
| 4 | AMAT |
Applied Materials Inc /De
|
11,757 | $4,018,425 | |
| 5 | LRCX |
Lam Research Corp
|
16,078 | $3,435,225 | |
| 6 | TER |
Teradyne, Inc
|
6,572 | $1,948,335 | |
| 7 | ACMR |
ACM Research, Inc.
This page
|
24,464 | $962,658 | |
| 8 | UCTT |
Ultra Clean Holdings, Inc.
|
5,210 | $323,957 |
All Filings in ACMR
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19 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $962,658 | 24,464 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $4,377,056 | 110,952 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $2,935,454 | 75,018 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $2,478,889 | 95,710 | Shares | Sole | 2025-08-05 | |
| 2025-03-31 | $2,570,387 | 110,128 | Shares | Sole | 2025-05-12 | |
| 2024-12-31 | $2,135,683 | 141,436 | Shares | Sole | 2025-02-11 | |
| 2024-09-30 | $706,967 | 34,826 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $1,159,110 | 50,265 | Shares | Sole | 2024-07-25 | |
| 2023-12-31 | $1,311,602 | 67,124 | Shares | Sole | 2024-02-02 | |
| 2023-03-31 | $672,340 | 57,465 | Shares | Sole | 2023-04-27 | |
| 2022-12-31 | $57,532 | 7,462 | Shares | Sole | 2023-02-02 | |
| 2022-09-30 | $445,008 | 35,715 | Shares | Sole | 2022-11-04 | |
| 2022-06-30 | $224,815 | 13,358 | Shares | Sole | 2022-08-03 | |
| 2022-03-31 | $1,689,152 | 81,641 | Shares | Sole | 2022-05-02 | |
| 2021-12-31 | $38,513 | 1,355 | Shares | Sole | 2022-02-23 | |
| 2021-03-31 | $282,226 | 10,480 | Shares | Sole | 2021-04-26 | |
| 2020-09-30 | $693,371 | 30,103 | Shares | Sole | 2020-10-14 | |
| 2020-06-30 | $98,716 | 4,749 | Shares | Sole | 2020-07-13 | |
| 2020-03-31 | $50,119 | 5,078 | Shares | Sole | 2020-04-29 | |
| No filing history on record for this holder in this stock. | ||||||