ACM Research, Inc. - Class A ACMR

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ACM Research, Inc. - Class A Common Stock · Company · Nasdaq

Paper trade (simulated — no real money)

Fill: USD 84.3200 · FX 1 USD = 1.288650 SGD · about SGD 108.6590 per unit

Sign in to place simulated trades. USD fills are converted into the SGD portfolio at the displayed rate.

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 31.98 → 84.32 · 163.7%
126.89075.40523.920 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20,21 22 23 24,25 26 27 28 29 30 Jul 25Oct 25Jan 26Apr 26Jul 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 26 Jul 2025 — 27 Jul 2026 (Last year)

Daily Nasdaq prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

No data yet
Weekend
Weekend
88.2200 88.2200 82.7300 84.3200 580,700
88.8000 90.5150 86.6300 88.4200 662,400
91.1800 94.5100 89.3500 89.5100 702,100
88.1700 95.4400 87.2800 95.2700 1,271,500
85.5700 86.6600 82.4700 82.5200 728,300
Weekend
Weekend
78.6750 86.9900 77.4600 83.9200 964,300
86.6900 89.5750 83.0100 84.0900 1,232,100
100.3600 101.0000 87.1500 91.9600 1,389,800
100.8000 101.2900 93.9500 98.8950 672,800
98.4900 99.4000 93.5000 94.0800 674,100
Weekend
Weekend
100.0000 105.2360 96.5100 103.0000 915,100
107.0000 108.8200 104.7150 106.0400 1,168,200
94.6600 98.5700 93.5340 98.0700 1,068,700
92.5600 94.9000 89.2600 94.6600 1,841,300
102.0000 106.3900 97.2600 98.5200 1,508,300
Weekend
Weekend
No trading
116.6500 116.6500 94.7200 97.7700 2,937,900
117.5150 123.6100 114.3700 117.1600 1,877,000
120.9750 127.1900 118.4670 126.8900 2,013,100
112.0600 120.7000 110.1000 118.8800 2,505,400
Weekend
Weekend
100.9800 105.5200 100.3100 104.5000 3,421,500
107.1700 108.8700 98.4500 106.8600 1,750,400
101.9630 105.9000 97.1400 101.6000 1,729,100
94.0500 100.8800 93.1320 99.1200 1,768,700
111.3850 111.4100 101.7200 103.1700 2,044,600
30 · 8-K Pre-market · 09:11 ET 8-K ↗
Weekend
Weekend
No trading
102.2700 110.1800 100.0600 109.8700 2,987,000
100.2800 104.9900 95.5900 96.1900 2,013,900
96.3500 99.9700 90.7100 91.1800 1,364,000
97.5500 98.9980 91.5600 95.2100 1,373,100
Weekend
Weekend
29 · 8-K After-hours · 16:06 ET 8-K ↗
92.4900 99.4500 90.8400 93.9500 2,245,600
84.3500 91.9900 82.1950 91.7000 1,424,500
81.1000 85.2000 76.8100 79.9600 1,161,000
85.0000 88.9910 74.1900 81.3300 1,658,800
83.8300 83.8300 78.8450 80.5700 1,392,300
Weekend
Weekend
85.2700 86.3100 75.6100 76.2900 1,900,900
85.6020 91.5600 83.6000 90.2050 1,667,300
92.0100 93.5000 86.6300 88.8600 1,621,500
84.6900 92.1300 83.2300 91.9200 1,595,500
83.5000 86.4900 80.9200 82.0500 1,853,500
Weekend
Weekend
28 · 8-K After-hours · 16:01 ET 8-K ↗
92.8000 94.2120 86.0700 86.5600 2,250,900
88.5150 93.9000 87.0090 92.8600 2,222,500
86.4600 89.7800 83.3700 88.6400 2,295,600
79.6100 86.5000 76.3700 86.4600 3,613,200
No trading
Weekend
Weekend
72.2900 76.3600 69.7600 73.3500 1,830,700
27 · 8-K Pre-market · 08:46 ET 8-K ↗
70.8700 72.6900 69.1000 71.5900 968,200
69.3500 71.6500 66.8500 71.6000 1,591,900
63.7000 68.7700 63.4400 66.4500 1,760,900
65.6800 67.0000 61.0500 63.2500 1,208,900
Weekend
Weekend
26 · 8-K After-hours · 16:16 ET 8-K ↗
60.7750 65.2900 59.2500 63.6700 2,730,900
64.8200 65.2800 62.6000 63.1900 2,206,000
63.0000 67.6600 60.2000 64.7500 3,474,900
25 · 424B5 After-hours · 17:23 ET 424B5 ↗
61.5900 63.8000 59.3500 62.9900 2,205,500
24 · 8-K Pre-market · 08:45 ET 8-K ↗
61.4800 65.9800 60.6200 64.6700 2,013,500
Weekend
Weekend
23 · 10-Q After-hours · 16:05 ET 10-Q ↗
60.0900 61.6000 57.2800 59.8500 1,160,200
53.0000 63.9500 52.5000 59.2000 2,981,200
22 · 8-K Pre-market · 07:26 ET 8-K ↗
54.1100 55.5400 52.5000 55.3800 1,471,500
53.4400 54.7800 52.3800 52.8000 1,051,100
52.2250 52.5240 49.4700 51.2300 759,900
Weekend
Weekend
51.3800 52.9000 50.4600 52.1500 870,200
49.7500 52.3900 48.8650 51.6900 877,800
50.9000 50.9800 47.7300 48.6500 865,100
51.2500 51.6100 47.7600 49.5300 1,071,500
54.9200 56.3000 51.8800 53.2300 1,268,100
21 · DEF 14A Pre-market · 09:15 ET DEF 14A ↗ 20 · 8-K Pre-market · 09:06 ET 8-K ↗
Weekend
Weekend
55.8000 57.2700 54.8650 56.1000 828,700
54.9500 56.6000 53.1200 53.9900 931,000
52.5000 54.5900 52.2000 54.5300 1,319,800
50.6000 52.3700 50.6000 51.2100 1,030,900
49.9050 50.8000 47.5000 49.6900 1,369,600
Weekend
Weekend
49.7900 52.9130 49.6500 50.6100 2,154,800
19 · 8-K Pre-market · 07:18 ET 8-K ↗
49.7000 49.7900 46.7900 47.8900 1,117,000
50.1900 50.4900 47.6730 49.7900 749,300
50.4600 51.4400 49.6000 50.7500 703,800
47.7900 50.3200 47.3150 49.6200 886,400
Weekend
Weekend
47.7600 48.9000 47.1300 48.0700 859,900
46.1400 47.2100 46.0000 46.9700 858,900
47.0900 47.5000 44.9200 46.1400 1,362,400
40.9100 42.2000 40.5700 41.9100 638,400
41.1200 41.8700 40.5900 41.6700 795,900
Weekend
Weekend
No trading
38.0300 41.7800 37.9150 40.5400 777,400
40.4100 42.4900 40.2900 40.4600 1,051,500
38.1900 39.3900 37.1600 39.3500 1,498,100
40.1700 40.5500 37.6400 37.9300 1,276,800
Weekend
Weekend
40.5600 41.4950 39.7300 40.0700 968,500
44.2500 44.6800 40.8800 41.1850 936,300
46.5900 46.7700 44.9800 45.6400 548,900
18 · 8-K After-hours · 17:02 ET 8-K ↗
44.0200 46.9100 44.0200 45.9200 646,000
45.0100 46.4500 44.4600 44.8300 757,400
Weekend
Weekend
46.0800 46.5300 42.6800 43.5500 2,228,500
17 · 8-K After-hours · 16:13 ET 8-K ↗
45.0000 47.3400 44.0400 46.6000 755,100
47.9500 48.5400 46.5400 46.6000 800,200
47.6300 48.6550 47.1800 47.3400 982,800
48.3550 48.8500 46.9150 46.9200 876,000
Weekend
Weekend
45.6000 47.1980 45.3450 46.3800 923,200
46.6270 46.6410 44.3750 45.2700 1,179,300
47.9000 48.6100 47.1800 47.8800 940,500
47.1800 50.2650 46.4800 48.0600 1,810,800
43.8700 46.8580 42.8300 46.6900 1,174,200
Weekend
Weekend
45.8900 47.6300 44.8800 44.9200 1,212,100
50.1600 50.7500 46.7600 48.3100 1,496,600
52.3500 53.3700 51.2200 51.8200 1,463,400
53.9100 54.0000 50.6200 51.5400 2,884,400
16 · 10-K After-hours · 16:18 ET 10-K ↗
54.4100 57.8250 53.8600 57.1100 1,829,600
Weekend
Weekend
56.0020 58.4100 55.0000 55.6800 1,978,900
62.5000 65.6600 54.5000 57.0400 4,075,800
15 · 8-K Pre-market · 07:47 ET 8-K ↗
68.2700 69.4600 66.5000 68.4700 1,354,900
65.8700 68.9400 65.8700 67.7600 916,000
66.4400 67.3000 62.8700 65.1200 1,032,800
Weekend
Weekend
64.6000 67.9900 64.6000 66.5900 933,700
64.0000 65.4500 63.1800 65.3500 1,005,900
64.2900 66.4900 63.6100 64.6100 1,104,200
64.3000 65.3540 62.9100 65.1800 925,300
No trading
Weekend
Weekend
64.4700 66.0300 62.5600 64.8400 1,382,300
70.0700 70.1000 63.4000 64.1000 2,164,400
65.1200 71.6500 65.0000 70.6800 2,801,000
62.5600 64.5960 60.6200 62.9200 844,900
61.3100 63.1100 60.1500 62.6400 1,137,000
Weekend
Weekend
56.6900 62.9710 56.2150 62.4800 1,713,100
14 · 8-K Pre-market · 08:17 ET 8-K ↗
53.5200 55.1100 50.3100 54.3900 1,967,400
13 · 8-K After-hours · 17:08 ET 8-K ↗
60.0400 60.3500 54.3000 56.5100 2,146,200
62.5000 64.7870 59.3580 61.2400 2,077,200
12 · 8-K Pre-market · 08:11 ET 8-K ↗
56.7000 61.5800 55.7400 61.1200 2,424,700
Weekend
Weekend
53.5800 58.1800 53.3900 58.1200 2,545,000
11 · 8-K Pre-market · 08:20 ET 8-K ↗
56.1500 57.0500 52.3000 54.6800 1,041,000
54.6100 56.4500 54.3300 55.7900 923,000
51.5700 54.7400 51.4500 53.9500 1,029,000
49.5200 51.1800 48.4300 51.1300 1,239,000
Weekend
Weekend
52.0900 52.3900 49.7500 49.8500 1,110,400
55.0000 56.3000 51.0700 51.6700 1,498,900
10 · 8-K Pre-market · 08:26 ET 8-K ↗
52.0800 54.5100 50.8000 53.4500 1,689,500
51.8200 54.4140 51.0400 51.1600 1,270,200
No trading
Weekend
Weekend
53.0300 54.0000 52.1800 53.6200 1,175,900
52.7250 54.3600 52.1200 52.1950 1,652,300
50.6800 51.0100 50.0000 50.4900 1,269,100
53.2800 53.3000 49.5000 51.3100 2,015,500
52.6500 54.8250 52.3000 53.3600 1,421,300
Weekend
Weekend
49.4800 53.5400 49.2500 53.2200 2,251,700
47.0800 49.2400 46.7200 49.1900 1,493,100
46.0900 47.6400 45.8000 47.6000 1,315,100
45.8900 47.8550 45.6200 46.9000 2,658,900
45.9900 46.1300 44.1100 45.0000 1,484,700
Weekend
Weekend
41.0000 44.9900 40.8550 44.8800 1,664,500
No trading
40.6600 40.6950 39.2880 39.4500 1,261,300
41.5300 43.7800 39.9520 40.2000 1,518,900
40.0000 40.5800 39.5100 39.9700 593,400
Weekend
Weekend
40.3200 40.9900 40.0000 40.6200 919,600
No trading
40.2000 40.9700 39.7950 40.1000 514,500
40.3500 40.8100 39.2800 39.8800 886,900
40.5500 41.9200 40.0000 40.8100 1,413,200
Weekend
Weekend
38.2300 40.7100 38.0700 39.7700 2,058,900
38.5100 39.4500 37.5700 37.8100 1,170,600
37.9900 39.1400 37.1400 37.3600 1,751,200
37.2800 37.8600 36.7500 37.1400 879,800
39.1500 39.5000 37.3300 37.7300 1,461,900
Weekend
Weekend
41.4600 41.4700 37.8470 38.8300 1,632,400
38.7500 40.0000 37.4600 39.9900 1,081,700
37.2100 39.7750 36.6600 39.4800 1,299,500
36.2900 37.4800 36.1530 37.0400 978,900
35.4500 37.8500 35.4500 36.5400 1,653,100
Weekend
Weekend
34.6800 35.3100 34.6800 35.1000 601,200
33.8500 34.9500 32.9100 34.6200 850,800
32.9600 33.9800 32.2000 33.9400 986,200
33.3100 33.7400 32.7200 32.8700 2,104,900
32.9500 33.9000 32.8350 33.3100 898,700
Weekend
Weekend
33.0200 33.4700 32.6300 33.4100 531,100
No trading
33.0000 33.6200 32.5000 32.8700 999,800
32.6400 33.3500 31.2400 33.1000 1,347,100
30.3300 32.4100 30.0200 32.0100 909,300
Weekend
Weekend
9 · 8-K After-hours · 16:03 ET 8-K ↗
29.3700 30.4650 28.4600 30.0300 1,498,700
32.0100 32.7750 29.4100 29.6700 841,300
31.0800 32.0700 30.8000 31.5000 693,000
30.9000 31.3900 29.8000 30.7700 905,700
31.5100 32.6890 31.1100 31.4700 789,900
Weekend
Weekend
30.6500 32.4100 30.5500 31.5100 855,100
33.8100 34.3550 32.2700 32.6400 2,132,000
32.9400 33.9400 32.5000 33.8100 1,918,200
32.0400 32.7200 30.9600 32.6400 1,713,800
32.0850 33.6800 31.4400 32.9500 2,316,400
Weekend
Weekend
30.1700 31.2000 29.5800 31.1000 1,450,300
8 · 10-Q After-hours · 16:05 ET 10-Q ↗
31.2600 32.5950 30.7600 30.9200 1,978,800
30.8000 33.3400 30.5000 31.1400 4,860,700
7 · 8-K Pre-market · 08:16 ET 8-K ↗
39.7900 40.3350 38.1600 38.9000 1,464,600
41.8600 42.0000 40.5630 41.3700 893,900
Weekend
Weekend
41.4100 42.0000 40.6300 41.4600 567,200
41.6700 42.3000 40.1300 41.2200 772,700
6 · 8-K After market open · 13:20 ET 8-K ↗
41.5100 42.9200 41.0700 42.1800 1,240,600
41.9900 41.9900 40.3900 40.4700 670,300
43.0100 43.1710 41.9600 42.4300 950,100
Weekend
Weekend
41.1400 42.1700 40.6220 41.7200 988,600
37.3900 40.6200 37.1100 40.2500 869,100
38.2600 38.8370 36.8200 37.6300 751,800
39.3600 39.6400 38.3900 38.9300 697,400
38.4600 40.0200 38.4200 39.7900 1,033,600
Weekend
Weekend
38.5600 39.4400 37.2400 38.0700 1,117,600
39.9800 40.4300 38.9200 39.6800 1,377,800
38.5700 39.3600 37.4350 39.3200 1,187,500
36.8000 39.0600 36.7600 38.1100 970,500
39.0600 39.5300 38.1390 38.6250 969,900
Weekend
Weekend
41.1500 41.1800 36.4000 36.5900 2,379,300
42.0000 42.0000 40.7600 41.0700 762,100
40.5000 42.0000 40.4900 41.9900 851,800
41.8000 42.1800 39.9400 40.4600 1,311,000
42.0900 43.5000 41.7000 41.7800 1,199,300
Weekend
Weekend
43.3200 43.4230 41.1710 41.5600 1,989,800
45.0000 45.1200 43.2100 43.3200 1,909,100
38.6400 44.2900 38.5000 43.7800 2,392,200
38.6400 39.6000 38.4000 39.1300 1,577,700
39.5000 39.8300 38.2500 38.6400 1,958,800
5 · 8-K Pre-market · 08:16 ET 8-K ↗
Weekend
Weekend
37.0000 38.0400 36.8500 37.7700 1,654,700
37.5000 38.2200 36.8100 37.9600 10,585,600
39.0000 40.1000 38.3800 38.6900 3,447,800
4 · 8-K Pre-market · 08:10 ET 8-K ↗
38.8000 39.8500 38.5200 38.9900 4,592,900
36.0000 37.2700 35.8700 36.6800 2,322,800
Weekend
Weekend
35.7500 36.2990 34.9230 35.8900 1,789,400
34.5200 36.1700 34.0900 36.0900 3,399,800
31.5000 33.8800 31.4230 33.7600 3,878,400
30.0200 31.2500 29.9600 30.9400 1,499,800
29.9400 30.0880 29.4700 29.8300 944,800
Weekend
Weekend
30.0400 30.5800 29.6250 29.8600 1,616,100
28.4900 30.3700 28.4700 30.1000 1,282,900
28.0700 28.7600 27.7000 28.0600 790,800
26.8900 27.9750 26.4400 27.9100 1,318,600
27.8100 27.9080 26.8400 26.9700 1,200,300
Weekend
Weekend
27.3900 27.5700 26.5340 27.4100 1,350,600
26.4100 27.0200 26.1000 26.9800 1,101,400
27.2900 27.5000 26.2300 26.8300 2,350,200
27.3600 27.9800 26.7000 27.5800 1,199,300
No trading
Weekend
Weekend
29.3400 29.4700 28.0500 28.2200 1,177,500
28.9900 29.4900 28.1100 29.2900 1,432,500
29.1900 29.3400 27.4750 28.5800 1,725,900
29.5500 29.9900 29.1000 29.9100 1,261,900
31.7400 32.2900 28.6800 28.8000 2,510,000
Weekend
Weekend
28.4000 31.8500 28.4000 30.5300 5,775,100
3 · 8-K After-hours · 16:01 ET 8-K ↗
24.9300 25.8000 24.9300 25.6100 1,196,600
25.0000 25.2100 24.1400 25.1600 816,000
25.1600 25.5930 24.5950 25.0700 778,600
24.9200 25.2550 24.6850 25.1600 821,100
Weekend
Weekend
25.4800 25.4800 24.3800 25.0200 1,361,100
25.4000 25.6600 24.9920 25.4800 892,300
25.7000 25.9200 25.0750 25.4600 1,086,300
24.1000 25.0700 24.1000 24.9300 1,122,600
24.4600 25.1880 23.8700 23.9200 1,064,700
Weekend
Weekend
24.2300 24.3200 23.5900 23.9400 1,511,600
2 · 10-Q After-hours · 16:04 ET 10-Q ↗
25.8500 25.8850 24.0640 24.2700 1,862,600
25.1500 25.7700 23.0300 25.1000 4,676,700
1 · 8-K Pre-market · 06:03 ET 8-K ↗
31.0000 31.2350 29.3450 29.6500 1,415,500
29.9500 30.7500 29.7300 30.7400 849,800
Weekend
Weekend
29.4550 29.8400 28.4200 29.4800 1,090,300
31.9500 31.9900 30.1180 30.3600 1,059,300
31.9550 32.5400 31.6000 32.0600 1,010,100
32.0000 32.5000 31.0700 31.6800 1,008,100
30.3100 32.0000 30.2900 31.9800 1,681,100
Weekend
Weekend

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

30 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:11 ET Summarise
29 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
28 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
27 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:46 ET Summarise
26 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:16 ET Summarise
25 424B5 424B5 (opens SEC filing in a new tab) After-hours · 17:23 ET Summarise
24 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
23 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
22 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:26 ET Summarise
21 DEF 14A DEF 14A (opens SEC filing in a new tab) Pre-market · 09:15 ET Summarise
20 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:06 ET Summarise
19 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:18 ET Summarise
18 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:02 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:13 ET Summarise
16 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:18 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:47 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:17 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:08 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:11 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:20 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:26 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
8 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:16 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After market open · 13:20 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:16 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:10 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:03 ET Summarise