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ACM RESEARCH-A (ACMR)
NASDAQ
$79.03-$0.38 (-0.48%)
Price as of Aug 21, 2026 7:30 PM EDT- $5.1BMarket Cap
- 160.10%1-Year Change
- Semiconductor Equipment & MaterialsIndustry
ACM RESEARCH-A (ACMR)
$79.03-$0.38 (-0.48%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
BLACKROCK, INC. | 13.51% | 8.7M | +675,995 (+7.81%) | Jun 30, 2026 |
VANGUARD GROUP INC | 7.75% | 5.0M | +125,690 (+2.53%) | Dec 31, 2025 |
BLACKROCK FUNDING, INC. /DE | 7.65% | 4.9M | +460,908 (+9.40%) | Dec 31, 2024 |
YIHENG CAPITAL LLC | 6.62% | 4.2M | +1.7M (+40.34%) | Dec 31, 2021 |
BLACKROCK INC. | 6.35% | 4.1M | +109,303 (+2.69%) | Jun 30, 2024 |
N/A | 5.22% | 3.3M | +1.1M (+34.20%) | Jun 30, 2026 |
VANGUARD PORTFOLIO MANAGEMENT LLC | 5.22% | 3.3M | +1.1M (+34.20%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 3.45% | 2.2M | +37,907 (+1.72%) | Mar 31, 2026 |
VANGUARD WORLD FUND | 2.08% | 1.3M | +4,564 (+0.34%) | May 31, 2026 |
Capitol Series Trust | 1.32% | 843,655 | 0 (0.00%) | Apr 30, 2026 |
SPDR SERIES TRUST | 1.23% | 790,074 | 0 (0.00%) | Apr 30, 2026 |
INVESCO EXCHANGE-TRADED FUND TRUST | 1.00% | 641,198 | -463,883 (-72.35%) | Apr 30, 2026 |
FIDELITY SALEM STREET TRUST | 0.81% | 516,935 | +453,296 (+87.69%) | Apr 30, 2026 |
FIDELITY CONCORD STREET TRUST | 0.77% | 494,271 | +1,586 (+0.32%) | May 31, 2026 |
Current Ownership Distribution
- Institutions683.5M (78.51%)
- Mutual Funds179.3M (20.60%)
- Insiders7.8M (0.89%)
- Other0 (0.00%)
Insider Transactions
- 0.89% (7.8M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 8Number of InsiderSelling (last 12 months)
- $301.0MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
McKechnie Mark See Remarks | Exempt | Aug 20, 2026 | $0.00 | 30,199 | $0.00 | 31,250 |
McKechnie Mark See Remarks | Exempt | Aug 20, 2026 | $0.00 | 25,000 | $0.00 | 215,000 |
McKechnie Mark See Remarks | Exempt | Aug 20, 2026 | $588,578.51 | 30,199 | $19.49 | 31,099 |
McKechnie Mark See Remarks | Exempt | Aug 20, 2026 | $347,250.00 | 25,000 | $13.89 | 56,099 |
McKechnie Mark See Remarks | Sell | Aug 20, 2026 | $1.0M | 13,625 | $76.34 | 42,474 |
McKechnie Mark See Remarks | Sell | Aug 20, 2026 | $2.4M | 30,365 | $77.45 | 12,109 |
McKechnie Mark See Remarks | Sell | Aug 20, 2026 | $873,069.01 | 11,209 | $77.89 | 900 |
Dun Haiping | Exempt | Aug 18, 2026 | $0.00 | 5,000 | $0.00 | 45,000 |
Dun Haiping | Exempt | Aug 18, 2026 | $28,000.00 | 5,000 | $5.60 | 5,000 |
Dun Haiping | Sell | Aug 18, 2026 | $96,348.00 | 1,200 | $80.29 | 3,800 |
Dun Haiping | Sell | Aug 18, 2026 | $276,454.00 | 3,400 | $81.31 | 400 |
Dun Haiping | Sell | Aug 18, 2026 | $32,868.00 | 400 | $82.17 | 0 |
Wang David H See Remarks | Award | May 13, 2026 | $0.00 | 6,208 | $0.00 | 6,208 |
Wang David H See Remarks | Exempt | Mar 12, 2026 | $0.00 | 50,000 | $0.00 | 370,002 |
Wang David H See Remarks | Exempt | Mar 12, 2026 | $50,000.00 | 50,000 | $1.00 | 852,708 |
Wang David H See Remarks | Sell | Mar 12, 2026 | $474,400.12 | 10,561 | $44.92 | 842,147 |
Wang David H See Remarks | Sell | Mar 12, 2026 | $1.8M | 38,737 | $45.74 | 803,410 |
Wang David H See Remarks | Sell | Mar 12, 2026 | $32,692.14 | 702 | $46.57 | 802,708 |
Liu Tracy | Exempt | Mar 11, 2026 | $0.00 | 15,000 | $0.00 | 0 |
Wang David H See Remarks | Exempt | Mar 11, 2026 | $0.00 | 60,000 | $0.00 | 420,002 |
Liu Tracy | Exempt | Mar 11, 2026 | $15,000.00 | 15,000 | $1.00 | 125,772 |
Wang David H See Remarks | Exempt | Mar 11, 2026 | $60,000.00 | 60,000 | $1.00 | 862,708 |
Liu Tracy | Sell | Mar 11, 2026 | $555,695.63 | 11,623 | $47.81 | 114,149 |
Wang David H See Remarks | Sell | Mar 11, 2026 | $2.7M | 55,373 | $47.89 | 807,335 |
Liu Tracy | Sell | Mar 11, 2026 | $162,940.25 | 3,377 | $48.25 | 110,772 |
Wang David H See Remarks | Sell | Mar 11, 2026 | $223,669.18 | 4,627 | $48.34 | 802,708 |
Liu Tracy | Exempt | Mar 10, 2026 | $45,000.00 | 45,000 | $1.00 | 155,772 |
Liu Tracy | Sell | Mar 10, 2026 | $1.5M | 32,216 | $47.06 | 123,556 |
Liu Tracy | Sell | Mar 10, 2026 | $616,060.96 | 12,784 | $48.19 | 110,772 |
Liu Tracy | Exempt | Mar 10, 2026 | $0.00 | 45,000 | $0.00 | 15,000 |