ACM Research, Inc. - Class A ACMR

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ACM Research, Inc. - Class A Common Stock · Company · Nasdaq · Technology / Semiconductor Equipment & Materials

Paper trade (simulated — no real money)

Fill: USD 50.5500 · FX 1 USD = 1.278120 SGD · about SGD 64.6090 per unit

Sign in to practise with simulated trades before investing real money. 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 42.43 → 50.55 · 19.1%
126.89078.28029.670 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 Oct 25Jan 26Apr 26Jul 26Oct 26

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

Price & SEC Filing History 25 Oct 2025 — 26 Oct 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
48.5800 51.5500 48.3800 50.5500 929,200
51.2900 52.7230 48.2500 49.1200 1,416,700
56.6200 56.6200 54.2700 54.6900 629,100
55.1300 56.9100 53.8680 54.9600 673,700
56.3500 57.9750 55.6990 56.0900 990,000
Weekend
Weekend
57.3500 57.3500 52.9550 53.1000 1,442,800
57.3150 58.3100 54.7200 58.0900 1,953,100
62.9000 63.6600 60.6000 61.1200 1,092,100
66.3500 66.6750 63.0000 64.8300 1,259,200
70.5900 70.5900 68.0000 68.1000 618,400
Weekend
Weekend
71.8600 72.9000 69.3610 71.3700 739,600
70.7800 73.3350 68.8560 70.8000 1,552,600
72.4300 73.9630 70.9900 72.7700 1,207,400
77.0400 78.4200 75.0800 75.3500 1,882,400
82.8600 83.3900 75.1850 76.1700 2,146,900
Weekend
Weekend
86.0900 86.2000 82.6310 83.3800 1,263,700
81.5000 85.2300 81.2500 83.5800 1,430,700
76.4200 82.4650 76.1050 80.9200 1,822,700
29 · 8-K Pre-market · 08:06 ET 8-K ↗
78.7100 78.7500 74.8250 75.6100 692,500
76.1900 76.9800 73.4700 75.9500 836,600
Weekend
Weekend
77.9700 78.4590 76.0800 77.3000 611,200
78.1000 78.6200 74.1430 76.1800 1,583,100
74.6500 82.7800 72.4000 80.6700 2,819,400
72.0000 76.0750 71.7250 75.8000 1,249,400
71.4550 73.4000 70.6100 72.7700 1,564,400
Weekend
Weekend
68.7200 69.4400 67.7700 68.5100 1,600,700
67.6900 68.5000 65.9400 67.7700 839,800
65.6800 66.6000 63.4100 64.8200 701,500
68.1200 68.8700 62.7800 63.9400 1,261,600
67.5700 69.0200 65.7900 66.8600 879,300
Weekend
Weekend
73.5200 74.6500 71.6300 72.0000 642,800
71.1800 77.1300 71.0000 72.3900 705,400
76.3800 77.9000 73.1300 73.8300 891,200
76.9900 78.7100 75.4600 76.9100 954,000
No trading
Weekend
Weekend
71.2500 74.8450 71.0000 74.4400 643,500
69.2000 69.7700 66.4200 69.4200 594,900
70.5200 70.5700 68.4000 69.9000 784,200
71.4400 71.7800 69.1700 70.0400 1,671,800
74.9700 75.9500 71.9500 72.8200 861,400
Weekend
Weekend
79.2700 80.2000 73.8190 74.4200 888,400
28 · 8-K After-hours · 16:05 ET 8-K ↗
81.6500 81.7200 78.9000 80.4900 540,600
80.9700 83.5000 78.1100 79.1100 648,000
79.5800 80.4750 78.1100 79.7700 564,500
77.2500 79.6700 76.5700 77.3450 696,400
Weekend
Weekend
79.6100 80.2000 76.1000 79.4100 546,500
77.1000 78.7200 75.4500 78.5200 810,900
85.0000 85.0400 77.2600 77.5900 1,111,800
80.7950 84.9900 78.0400 84.3700 2,461,400
81.3500 85.9500 79.5400 85.6400 1,082,900
Weekend
Weekend
80.2000 82.0900 77.8100 80.4200 557,700
80.2400 84.1500 80.2400 81.1900 465,800
84.3700 85.1000 81.2200 81.2600 593,700
80.5300 81.5900 78.4900 79.9200 619,800
87.3000 88.8100 79.3300 79.4100 1,300,900
Weekend
Weekend
27 · 10-Q After-hours · 16:07 ET 10-Q ↗
92.5500 92.5500 78.7300 83.8000 1,427,300
26 · 8-K Pre-market · 07:37 ET 8-K ↗
77.6650 81.1900 75.9000 78.9800 1,053,000
81.0700 84.2800 79.3400 79.9000 612,800
83.4700 84.3300 80.2500 82.5100 719,200
74.8300 79.5300 74.0000 78.6400 926,800
Weekend
Weekend
83.6700 85.0000 76.6000 78.4700 897,000
72.8400 78.9700 69.8900 78.6500 1,589,700
71.3000 72.1570 63.5310 65.3000 2,091,000
75.1000 75.9500 69.8300 72.0200 1,371,500
84.6500 85.2000 75.5000 79.9700 1,041,700
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
25 · 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
24 · 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
23 · 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
22 · 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
21 · 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
20 · 424B5 After-hours · 17:23 ET 424B5 ↗
61.5900 63.8000 59.3500 62.9900 2,205,500
19 · 8-K Pre-market · 08:45 ET 8-K ↗
61.4800 65.9800 60.6200 64.6700 2,013,500
Weekend
Weekend
18 · 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
17 · 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
16 · DEF 14A Pre-market · 09:15 ET DEF 14A ↗ 15 · 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
14 · 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
13 · 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
12 · 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
11 · 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
10 · 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
9 · 8-K Pre-market · 08:17 ET 8-K ↗
53.5200 55.1100 50.3100 54.3900 1,967,400
8 · 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
7 · 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
6 · 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
5 · 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
4 · 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
3 · 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
2 · 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
1 · 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

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.

29 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:06 ET Summarise
28 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
27 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise
26 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:37 ET Summarise
25 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:11 ET Summarise
24 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:06 ET Summarise
23 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:01 ET Summarise
22 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:46 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:16 ET Summarise
20 424B5 424B5 (opens SEC filing in a new tab) After-hours · 17:23 ET Summarise
19 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:45 ET Summarise
18 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:26 ET Summarise
16 DEF 14A DEF 14A (opens SEC filing in a new tab) Pre-market · 09:15 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:06 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:18 ET Summarise
13 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:02 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:13 ET Summarise
11 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:18 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) Pre-market · 07:47 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:17 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:08 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:11 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:20 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:26 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
3 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
2 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:16 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After market open · 13:20 ET Summarise