MarketPeel
Insider Trading Intelligence
Pricing
…
DW

David H. Wang

ACMR
SEE REMARKS · ACM RESEARCH, INC. · CIK 0001721580
FILING MIX · LIFETIME23%/77%
BUYS
27
SELLS
89
TOTAL VALUE
$71.68M
COMPANIES
1
ACTIVE SINCE
May 2020
HOLDINGS NOW
812,115
AVG SELL PX
$36.89
TRADE KIND
SHOWING 116 / 116
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
44 backtested trades · 8 horizons · 40 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by David H. Wang, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d44+56.82%-1.55%+0.25%-1.80%-2.28%-1.33
14d44+47.73%+0.33%+0.43%-0.10%-1.75%-0.07
30d44+27.27%+4.87%+1.05%+3.82%+1.73%1.28
60d44+45.45%+15.79%+4.22%+11.57%+4.77%2.58
90d44+36.36%+18.57%+6.10%+12.47%+5.72%2.74
180d44(5 pending)+28.21%+33.21%+11.65%+7.92%+0.82%1.15
1y44(12 pending)+31.25%+37.84%+21.56%+16.29%-15.47%1.37
2y44(23 pending)+33.33%+58.57%+32.04%+0.01%+19.05%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
ACMR · 812,115 shares · as of Jun 4, 2026
0409,049818,0991,227,1481,636,197202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 27 buys / 89 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
826$87.91$72.6K802,708Jun 4, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
8,581$87.13$747.7K803,534Jun 4, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
40,002——270,000Jun 4, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
40,002$1.00$40.0K842,710Jun 4, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
2,060$83.86$172.8K840,650Jun 4, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
17,543$85.11$1.49M823,107Jun 4, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
10,992$86.07$946.1K812,115Jun 4, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
4,300$87.57$376.6K858,408Jun 3, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
32,450$89.84$2.92M819,663Jun 3, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
5,843$92.38$539.8K803,895Jun 3, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
1,187$93.04$110.4K802,708Jun 3, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
9,925$90.78$901.0K809,738Jun 3, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
6,295$88.98$560.1K852,113Jun 3, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
60,000$1.00$60.0K862,708Jun 3, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
60,000——310,002Jun 3, 2026Jun 5, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASEGRANT
Stock grant
6,208——6,208May 13, 2026Jul 6, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
50,000$1.00$50.0K852,708Mar 12, 2026Mar 13, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
702$46.57$32.7K802,708Mar 12, 2026Mar 13, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
50,000——370,002Mar 12, 2026Mar 13, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
38,737$45.74$1.77M803,410Mar 12, 2026Mar 13, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
10,561$44.92$474.4K842,147Mar 12, 2026Mar 13, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
60,000——420,002Mar 11, 2026Mar 13, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
4,627$48.34$223.7K802,708Mar 11, 2026Mar 13, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
60,000$1.00$60.0K862,708Mar 11, 2026Mar 13, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
55,373$47.89$2.65M807,335Mar 11, 2026Mar 13, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASEGRANT
Stock grant
545,400——1,636,197Feb 4, 2026Feb 6, 2026 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
19,817$33.52$664.3K842,891Dec 4, 2025Dec 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
60,000——480,002Dec 4, 2025Dec 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
60,000$1.00$60.0K862,708Dec 4, 2025Dec 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
40,183$34.42$1.38M802,708Dec 4, 2025Dec 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
70,000$1.00$70.0K872,708Dec 3, 2025Dec 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
68,800$33.05$2.27M803,908Dec 3, 2025Dec 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
1,200$33.56$40.3K802,708Dec 3, 2025Dec 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
70,000——540,002Dec 3, 2025Dec 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASEGRANT
Stock grant
545,400——545,400Oct 27, 2025Oct 29, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
130,000——610,002Sep 8, 2025Sep 30, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
130,000$1.00$130.0K802,708Sep 8, 2025Sep 30, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
60,000——740,002Sep 4, 2025Sep 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
60,000$26.44$1.59M672,708Sep 4, 2025Sep 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
60,000$1.00$60.0K732,708Sep 4, 2025Sep 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
3,943$27.31$107.7K672,708Sep 3, 2025Sep 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
66,057$26.73$1.77M676,651Sep 3, 2025Sep 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
70,000——800,002Sep 3, 2025Sep 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
70,000$1.00$70.0K742,708Sep 3, 2025Sep 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
60,000$1.00$60.0K732,708May 22, 2025May 23, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
60,000$22.63$1.36M672,708May 22, 2025May 23, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
60,000——870,002May 22, 2025May 23, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
69,992$23.60$1.65M672,716May 21, 2025May 23, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
70,000$1.00$70.0K742,708May 21, 2025May 23, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
70,000——930,002May 21, 2025May 23, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
8$24.04$192672,708May 21, 2025May 23, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
1,019$27.65$28.2K672,708Mar 13, 2025Mar 13, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
36,481$27.29$995.6K673,727Mar 13, 2025Mar 13, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
37,500$27.42$1.03M710,208Mar 12, 2025Mar 13, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
56,250$26.57$1.49M747,708Mar 11, 2025Mar 13, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
210,000——0Mar 3, 2025Mar 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
4,048$25.94$105.0K803,958Mar 3, 2025Mar 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
210,000$0.50$105.0K808,006Mar 3, 2025Mar 5, 2025 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
56,250$17.44$981.0K598,006Nov 29, 2024Dec 3, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
46,766$17.80$832.4K663,740Nov 26, 2024Nov 29, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
9,484$18.31$173.7K654,256Nov 26, 2024Nov 29, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
56,250$19.08$1.07M710,506Nov 22, 2024Nov 26, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
270,000$0.50$135.0K774,018Nov 14, 2024Nov 18, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
7,262$18.59$135.0K766,756Nov 14, 2024Nov 18, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
270,000——210,000Nov 14, 2024Nov 18, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
41,090$22.62$929.5K504,018May 29, 2024May 31, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
45,000$22.62$1.02M545,108May 29, 2024May 31, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
45,000$22.81$1.03M590,108May 22, 2024May 24, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
45,000$22.81$1.03M635,108May 22, 2024May 24, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
180,000$0.50$90.0K684,018May 14, 2024May 16, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
3,910$23.02$90.0K680,108May 14, 2024May 16, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
180,000——480,000May 14, 2024May 16, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
10,611$28.38$301.1K504,018Mar 14, 2024Mar 15, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
76,478$27.51$2.10M514,629Mar 14, 2024Mar 15, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
45,000$30.35$1.37M591,107Mar 8, 2024Mar 12, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
45,000$30.36$1.37M636,107Mar 8, 2024Mar 12, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
2,911$30.92$90.0K681,107Mar 1, 2024Mar 5, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
180,000$0.50$90.0K684,018Mar 1, 2024Mar 5, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
180,000——660,000Mar 1, 2024Mar 5, 2024 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
39,776$17.13$681.4K504,018Nov 29, 2023Dec 1, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
45,000$17.14$771.3K543,794Nov 29, 2023Dec 1, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
45,000$17.68$795.6K588,794Nov 22, 2023Nov 27, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
45,000$17.67$795.1K633,794Nov 22, 2023Nov 27, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
180,000——840,000Nov 14, 2023Nov 16, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
5,224$17.23$90.0K678,794Nov 14, 2023Nov 16, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
180,000$0.50$90.0K684,018Nov 14, 2023Nov 16, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
85,116$17.68$1.50M504,018Sep 13, 2023Sep 14, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
86,427$18.03$1.56M592,707Sep 12, 2023Sep 14, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALE10b5-1
10b5-1 plan
3,573$18.72$66.9K589,134Sep 12, 2023Sep 14, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
180,000——1,020,000Sep 4, 2023Sep 6, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See Remarks
4,884$18.43$90.0K679,134Sep 4, 2023Sep 6, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See Remarks
180,000$0.50$90.0K684,018Sep 4, 2023Sep 6, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALEGRANT
Stock grant
1,080,000——1,080,000Aug 10, 2023Aug 21, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALEGRANT
Stock grant
1,080,000——1,080,000Aug 10, 2023Aug 14, 2023 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
49,228$90.55$4.46M168,006Mar 19, 2021Mar 22, 2021 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
50,000$91.92$4.60M217,234Mar 18, 2021Mar 22, 2021 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
773$97.05$75.0K267,234Mar 12, 2021Mar 16, 2021 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See remarks
100,001$0.75$75.0K268,007Mar 12, 2021Mar 16, 2021 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
100,001——0Mar 12, 2021Mar 16, 2021 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
49,322$77.14$3.80M168,006Dec 4, 2020Dec 7, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
32,995$82.50$2.72M217,328Dec 3, 2020Dec 7, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
16,666$82.50$1.37M250,323Dec 3, 2020Dec 7, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
339$73.76$25.0K201,001Nov 25, 2020Nov 27, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
678$73.76$50.0K266,989Nov 25, 2020Nov 27, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
33,334——0Nov 25, 2020Nov 27, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See remarks
33,334$0.75$25.0K201,340Nov 25, 2020Nov 27, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
66,666——100,001Nov 25, 2020Nov 27, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See remarks
66,666$0.75$50.0K267,667Nov 25, 2020Nov 27, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
49,453$80.08$3.96M168,006Sep 4, 2020Sep 4, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
20,000$84.53$1.69M217,459Sep 3, 2020Sep 4, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See remarks
70,000$0.75$52.5K238,006Aug 27, 2020Aug 31, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
70,000——33,334Aug 27, 2020Aug 31, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
547$96.05$52.5K237,459Aug 27, 2020Aug 31, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASEGRANT
Stock grant
181,799——181,799Aug 5, 2020Aug 7, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
SALE
See remarks
33,334——0May 21, 2020May 26, 2020 ↗View →
ACMR
ACM RESEARCH, INC.
PURCHASE
See remarks
33,334——33,334May 21, 2020May 26, 2020 ↗View →
Other insiders · ACMR
Loading peer insiders…
About this filer
CIK 0001721580
ROLE
See remarks
PRIMARY
ACMR
COMPANIES
1
ACTIVE SINCE
May 2020
MARKETPEEL · /INSIDER/0001721580DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

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