ACM Research, Inc.

ACMRNASDAQ

$76.17-7.21 (-8.65%)as of Oct 5, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

ACM Research, Inc. price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (+82.3%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
BlackRock, Inc.	20.36%	$1.1B	0.02%	Not reported
Vanguard Portfolio Management LLC	7.88%	$425M	0.02%	Not reported
Vanguard Capital Management LLC	5.79%	$312M	0.01%	Not reported
Capital World Investors	5.64%	$304M	0.04%	New Not reported
State Street Corp	5.15%	$278M	0.01%	Not reported
Geode Capital Management, LLC	3.50%	$189M	0.01%	Not reported
Invesco Ltd.	2.75%	$148M	0.01%	Not reported
Value Aligned Research Advisors, LLC	2.48%	$134M	0.33%	Add 10.25%
WFM ASIA (BVI) Ltd	2.28%	$123M	18.56%	New Not reported
Dimensional Fund Advisors LP	2.24%	$121M	0.02%	Not reported
WCM Investment Management, LLC	2.16%	$109M	0.20%	Reduce 50.69%
Polunin Capital Partners Ltd	1.76%	$77.1M	18.92%	Reduce 1.94%
Tekne Capital Management, LLC	1.73%	$93.6M	30.62%	Add 3.15%
Morgan Stanley	1.65%	$88.8M	0.00%	Not reported
FMR LLC	1.58%	$85.3M	0.00%	Not reported
Fuller & Thaler Asset Management, Inc.	1.50%	$81.1M	0.22%	Not reported
Gilder Gagnon Howe & Co LLC	1.50%	$80.8M	0.83%	Add 794.18%
Citadel Advisors LLC	1.50%	$80.8M	0.01%	Not reported
Capital International Investors	1.47%	$79.1M	0.02%	New Not reported
Northern Trust Corp	1.34%	$72.2M	0.01%	Not reported
Jupiter Topco LLC	1.30%	$70.2M	0.03%	Not reported
Charles Schwab Investment Management Inc	1.24%	$66.8M	0.01%	Not reported
Bank of America Corp	1.13%	$60.9M	0.00%	Not reported
Tidal Investments LLC	1.11%	$59.8M	0.10%	Add 50.07%
Goldman Sachs Group Inc	1.00%	$54.1M	0.00%	Not reported
Vanguard Fiduciary Trust Co	0.95%	$51.3M	0.01%	Not reported
UBS Group AG	0.95%	$51.1M	0.01%	Not reported
Principal Financial Group Inc	0.87%	$47.1M	0.02%	Not reported
Wexford Capital LP	0.84%	$45.1M	5.77%	Reduce 40.69%
Mitsubishi UFJ Trust & Banking Corp	0.83%	$44.6M	0.10%	Reduce 24.60%
Bank of New York Mellon Corp	0.77%	$41.4M	0.01%	Not reported
AQR Capital Management LLC	0.74%	$39.9M	0.01%	Not reported
First Trust Advisors LP	0.72%	$38.8M	0.02%	Reduce 18.17%
Penn Capital Management Company, LLC	0.67%	$36.3M	2.30%	Reduce 28.15%
Qube Research & Technologies Ltd	0.66%	$35.5M	0.03%	Not reported
Oasis Management Co Ltd.	0.65%	$34.8M	1.86%	Add 1.64%
Mackenzie Financial Corp	0.63%	$34M	0.03%	Not reported
Cederberg Capital Ltd	0.60%	$32.3M	32.20%	Reduce 57.50%
Susquehanna International Group, LLP	0.60%	$32.2M	0.00%	Not reported
MY.Alpha Management HK Advisors Ltd	0.59%	$31.7M	12.19%	New Not reported
Renaissance Technologies LLC	0.54%	$29.2M	0.04%	Not reported
12 West Capital Management LP	0.53%	$28.6M	5.34%	Add 3588.52%
Congress Asset Management Co	0.53%	$28.4M	0.17%	Reduce 34.13%
Russell Investments Group, Ltd.	0.52%	$28.1M	0.02%	Not reported
JPMorgan Chase & Co	0.51%	$25.8M	0.00%	Not reported
Two Sigma Investments, LP	0.50%	$27M	0.02%	Not reported
Citigroup Inc	0.49%	$26.6M	0.01%	Not reported
Public Sector Pension Investment Board	0.46%	$24.9M	0.06%	Add 2.83%
Jacobs Levy Equity Management, Inc	0.45%	$24.4M	0.09%	Not reported
New York State Common Retirement Fund	0.45%	$24.3M	0.03%	Not reported

50 of 355 holders

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