ChipMOS TECHNOLOGIES INC IMOS

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ChipMOS TECHNOLOGIES INC. - American Depositary Shares · Company · Nasdaq · Technology / Semiconductors

Paper trade (simulated — no real money)

Fill: USD 56.1000 · FX 1 USD = 1.277900 SGD · about SGD 71.6902 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 20.48 → 56.10 · 173.9%
83.30051.89020.480 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 31 32 33 34 35,36 37 38 39 40 41 42 43 44 45 46,47 48,49 50 51 52 Oct 25Jan 26Apr 26Jul 26Oct 26

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

Price & SEC Filing History 24 Oct 2025 — 25 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.

Weekend
Weekend
55.5200 56.7500 55.4400 56.1000 64,531
57.5500 58.6400 54.9900 55.4600 123,500
52 · 6-K After market open · 10:05 ET 6-K ↗
62.9000 62.9000 61.8300 62.3400 37,600
60.3700 61.3500 58.8300 60.9500 58,800
62.6000 62.9900 61.3600 61.9700 46,300
Weekend
Weekend
64.3200 64.3200 61.2600 61.4200 66,500
66.3700 66.3700 63.5600 65.1400 93,100
71.2800 71.8700 68.7700 69.1900 87,000
71.3100 72.6700 69.5200 72.2400 95,700
75.4300 75.4700 74.0000 75.1900 134,200
Weekend
Weekend
78.0000 79.5000 77.0100 77.7300 54,100
51 · 6-K After market open · 10:05 ET 6-K ↗
77.1000 78.0400 75.0700 75.5000 86,500
78.7300 79.5000 76.7000 78.6000 68,200
80.2600 80.3500 78.2000 78.3900 94,000
80.8600 80.8600 76.8300 77.4100 192,000
Weekend
Weekend
79.8800 83.8400 78.9000 83.3000 258,300
71.5300 73.1900 71.0500 72.6800 77,400
71.7400 72.9000 71.1400 71.7700 100,900
50 · 6-K After market open · 10:05 ET 6-K ↗
67.9600 68.6600 66.0000 67.7600 121,000
70.0200 71.8600 69.3700 71.5800 94,900
Weekend
Weekend
70.8600 72.4100 70.5900 71.7800 74,500
69.9900 71.0000 68.8900 69.7200 83,200
67.6700 68.0500 66.4200 67.3700 114,100
66.1000 68.2500 66.1000 67.9200 82,600
65.4000 65.7600 64.4600 65.1800 105,000
Weekend
Weekend
59.0100 61.3600 58.5900 61.3000 205,500
55.1900 55.6100 54.9500 55.0900 67,700
54.8000 55.5800 54.1900 54.7500 67,900
53.1700 53.3800 52.3900 52.7800 22,900
52.6100 54.1100 52.6000 53.5800 135,700
Weekend
Weekend
55.5900 56.0300 55.1100 55.3300 67,500
56.0000 56.7000 55.4900 55.9900 46,400
49 · 6-K Pre-market · 06:05 ET 6-K ↗ 48 · 6-K Pre-market · 06:00 ET 6-K ↗
57.8200 58.3900 57.5100 58.3900 34,500
57.1000 58.3000 56.7500 57.0600 79,500
No trading
Weekend
Weekend
56.5700 57.7100 55.0200 57.6100 76,200
56.0600 56.7200 55.0300 56.3800 42,100
55.7000 56.2000 55.0100 56.1500 56,100
56.0000 57.8300 56.0000 57.2700 78,700
55.8200 55.8500 54.2500 54.6400 79,700
Weekend
Weekend
56.8900 56.8900 55.0900 55.4600 38,400
58.0200 58.0400 56.8900 57.5100 39,200
56.9900 57.7000 56.6600 57.1700 41,400
54.7300 55.9900 54.6800 55.5600 68,800
54.0300 55.0700 53.2500 54.4900 59,100
Weekend
Weekend
54.1000 54.4900 52.4800 54.0300 67,900
54.0200 54.6600 53.1900 54.0900 46,900
54.6000 55.0000 52.0200 52.4400 87,200
54.9800 55.6500 53.0000 53.6400 76,500
57.6000 58.1500 56.9000 57.2500 84,100
Weekend
Weekend
56.8400 58.3600 56.3000 58.3600 114,700
56.6000 58.6300 56.6000 57.7900 171,000
58.0500 58.1800 56.2600 56.4700 99,300
57.5200 60.0600 54.7200 59.2800 227,500
47 · 6-K Pre-market · 06:10 ET 6-K ↗ 46 · 6-K Pre-market · 06:05 ET 6-K ↗
56.9000 56.9000 52.6300 53.0500 119,300
45 · 6-K Pre-market · 06:05 ET 6-K ↗
Weekend
Weekend
53.4800 53.5800 52.0000 52.5400 65,000
51.9200 53.5300 51.5500 52.6200 56,900
52.4000 53.3200 51.0200 51.0200 97,800
53.0000 53.0000 51.3200 52.4200 157,700
48.0100 48.6200 46.5300 48.3200 76,300
44 · 6-K Pre-market · 06:05 ET 6-K ↗
Weekend
Weekend
48.8000 49.8800 47.1500 47.4000 77,700
45.0000 47.2100 43.5100 47.0500 178,100
43 · 6-K Pre-market · 06:05 ET 6-K ↗
47.0200 47.2900 45.4800 45.6400 156,500
50.1000 51.0100 48.4000 49.6400 162,600
55.6900 55.9500 53.4900 54.9400 66,500
Weekend
Weekend
57.8600 58.1200 55.1700 55.1700 142,700
61.8200 63.0200 59.3000 59.7800 112,000
42 · 6-K Pre-market · 06:00 ET 6-K ↗
62.0500 64.2800 61.8600 63.0600 112,700
64.5900 66.1800 64.0000 66.0000 119,400
66.6200 68.0000 62.6800 63.0800 94,900
41 · 6-K Pre-market · 06:05 ET 6-K ↗
Weekend
Weekend
67.1400 69.5400 64.0000 68.8100 197,900
68.6400 73.2800 68.5300 71.1300 174,100
68.6700 69.8900 65.8700 68.6400 200,900
67.0000 67.7700 63.5000 64.4700 147,300
72.6300 72.6300 68.8200 69.1400 137,900
Weekend
Weekend
76.4900 78.3500 75.1100 75.7900 268,800
40 · 6-K Pre-market · 06:05 ET 6-K ↗
73.0400 76.3600 70.4000 74.3700 112,800
65.2000 68.2300 65.2000 68.0700 71,500
67.0000 67.2600 64.7000 65.8500 110,600
68.6100 73.9700 66.9300 72.5300 202,300
Weekend
Weekend
No trading
66.9300 68.1100 63.4900 63.9300 113,400
64.6300 66.5000 64.4800 64.8100 96,500
60.7300 64.4900 60.7300 64.2500 103,400
55.9100 58.5300 55.0300 58.3000 91,100
Weekend
Weekend
58.8100 60.7400 58.8100 60.5400 89,300
61.6000 61.6000 58.6800 58.9000 107,700
63.9400 64.6900 61.8000 62.8000 120,200
63.3000 66.7700 62.0100 65.3400 105,300
39 · 6-K Pre-market · 06:05 ET 6-K ↗
70.0400 72.9100 70.0400 70.2900 166,300
Weekend
Weekend
No trading
64.1900 66.5800 62.1400 66.5800 178,300
59.3000 60.7800 58.9300 59.0000 72,300
60.2500 60.3900 58.2800 58.5700 79,300
62.0200 62.5000 60.5200 60.6600 97,900
Weekend
Weekend
62.4600 63.0100 60.8800 61.9500 99,800
60.4000 63.7800 58.8700 63.7600 116,300
56.0100 57.4200 55.1200 55.1200 72,500
38 · 6-K Pre-market · 06:05 ET 6-K ↗
59.1400 60.8000 55.9500 58.5800 118,400
56.7900 57.6900 55.5000 56.4800 96,600
Weekend
Weekend
62.1700 62.1700 57.2000 57.6600 119,900
62.8100 64.3400 61.8600 63.9300 79,800
63.5000 63.5000 61.1600 62.7500 134,500
64.1000 64.7400 61.7500 64.6100 106,200
65.8900 68.7800 65.1600 66.5700 144,200
Weekend
Weekend
69.7600 70.9900 67.0400 70.2600 248,700
62.0100 67.2500 60.0300 66.9900 209,900
58.0400 59.0000 55.4500 56.7200 143,800
37 · 6-K Pre-market · 06:05 ET 6-K ↗
53.1200 55.4500 53.1200 55.2300 80,600
36 · 6-K Pre-market · 06:10 ET 6-K ↗ 35 · 6-K Pre-market · 06:05 ET 6-K ↗
No trading
Weekend
Weekend
50.0000 52.5000 49.9700 51.0200 108,400
48.4000 49.8000 48.0400 49.0700 73,200
48.1200 48.6400 47.1400 48.4900 64,100
34 · 6-K Pre-market · 06:02 ET 6-K ↗
48.8400 49.4600 48.0000 49.0000 104,000
52.2500 52.4600 50.7900 51.4000 88,500
Weekend
Weekend
51.2800 51.7000 50.5200 50.7700 65,500
53.8200 54.1200 52.2000 53.6100 76,800
53.7600 54.7600 53.6000 54.5500 90,100
53.3900 54.8700 51.5700 53.6000 162,700
33 · 6-K Pre-market · 06:05 ET 6-K ↗
57.9200 58.5300 56.4200 57.1700 137,400
Weekend
Weekend
59.5300 61.2700 57.8600 60.2700 118,800
32 · 6-K Pre-market · 06:05 ET 6-K ↗
59.2000 60.4700 58.6800 59.4400 153,700
55.5200 57.3700 55.4500 55.5000 156,500
52.1200 55.0600 52.1200 54.8000 138,100
48.2400 49.4000 47.5300 48.1400 93,900
31 · 6-K Pre-market · 06:05 ET 6-K ↗
Weekend
Weekend
45.6900 46.5900 45.4000 45.6000 65,800
44.6300 45.9600 44.1200 45.6200 84,600
43.2600 43.2600 41.8500 42.5200 67,400
42.9200 43.4600 42.4900 42.8700 66,200
44.3800 44.3800 42.0600 43.3500 88,100
Weekend
Weekend
45.8900 46.1100 45.0300 45.6100 93,200
30 · 6-K Pre-market · 06:05 ET 6-K ↗
46.1000 46.7300 45.0300 45.7700 111,300
29 · 6-K Pre-market · 06:05 ET 6-K ↗
49.1000 51.0800 49.1000 50.7400 105,700
28 · 6-K Pre-market · 06:00 ET 6-K ↗
46.6500 48.0000 45.3800 45.9200 60,100
46.0200 46.0200 43.3000 43.4900 112,500
Weekend
Weekend
48.2900 48.9000 45.5200 47.0900 127,500
45.6800 49.8900 45.6700 49.1700 154,100
41.6000 43.1800 41.6000 43.0800 39,200
41.3800 41.5000 40.4100 41.0500 41,600
27 · 6-K Pre-market · 07:00 ET 6-K ↗ 26 · 20-F Pre-market · 06:15 ET 20-F ↗
40.3000 41.0100 40.0200 40.9100 30,500
Weekend
Weekend
40.1300 41.1400 39.8700 40.9100 54,200
25 · 6-K Pre-market · 06:34 ET 6-K ↗
38.5600 39.2200 38.3600 39.1800 54,900
38.1600 39.5100 38.1600 38.9800 37,400
36.3600 36.3600 35.4700 36.0000 20,900
36.7100 37.0300 36.4100 36.5700 34,200
Weekend
Weekend
No trading
35.0900 37.7300 34.8800 36.7100 117,500
24 · 6-K Pre-market · 06:05 ET 6-K ↗
36.2500 36.9200 34.8000 35.9000 46,500
35.2200 35.9900 34.2000 35.7800 56,600
35.9800 38.1000 34.9500 35.2200 55,700
Weekend
Weekend
35.6500 36.0400 35.0000 35.8200 49,400
37.4900 37.4900 36.2800 36.3200 36,100
38.8000 38.8000 37.4900 38.0700 58,900
36.8100 37.8000 35.7700 37.7600 105,300
37.8800 39.2500 37.4800 39.0500 110,100
Weekend
Weekend
40.2500 40.2500 38.2300 38.2300 42,300
39.7500 40.5400 39.1300 40.5400 15,300
40.3700 41.5000 39.7600 40.0300 66,000
40.2600 41.2500 40.1800 40.9300 36,400
38.3400 39.7900 38.3400 39.7500 34,800
Weekend
Weekend
38.5000 38.6200 37.4300 37.7300 42,200
38.8600 38.8900 37.7900 38.0800 90,200
23 · 6-K Pre-market · 06:00 ET 6-K ↗
39.6100 40.1000 38.9700 39.8200 28,000
38.9300 39.3900 38.1100 38.9500 62,100
22 · 6-K Pre-market · 06:10 ET 6-K ↗ 21 · 6-K Pre-market · 06:05 ET 6-K ↗
36.9500 38.3500 36.0200 38.0900 51,600
Weekend
Weekend
37.6500 38.4900 36.9800 36.9900 26,000
38.3100 38.9600 38.2000 38.6100 24,900
37.9500 37.9500 37.0000 37.6500 26,500
40.3000 40.3000 37.0200 38.2500 74,700
43.5800 43.9200 42.3600 43.2500 32,700
20 · 6-K Pre-market · 06:05 ET 6-K ↗
Weekend
Weekend
44.1300 44.9900 43.6400 44.9300 22,800
43.7000 45.0400 42.6600 44.8000 80,200
41.0000 43.2000 41.0000 42.2800 44,500
37.0600 40.4000 36.8900 39.9800 86,800
19 · 6-K Pre-market · 06:15 ET 6-K ↗ 18 · 6-K Pre-market · 06:10 ET 6-K ↗ 17 · 6-K Pre-market · 06:05 ET 6-K ↗
34.5000 35.6100 34.5000 35.0700 35,700
Weekend
Weekend
33.1700 34.5000 33.1700 34.2000 20,200
33.8900 33.9300 30.6300 33.4200 121,800
34.5800 35.3100 34.1200 34.1400 21,400
34.8500 35.1000 33.8800 34.4700 29,600
No trading
Weekend
Weekend
35.7700 35.9000 34.9800 35.3400 20,100
16 · 6-K Pre-market · 06:05 ET 6-K ↗
35.6200 35.9100 34.9200 35.4700 44,700
34.8000 35.5000 34.5000 35.2100 22,800
33.9100 35.7300 33.7600 35.1000 51,600
15 · 6-K Pre-market · 06:10 ET 6-K ↗
33.6800 34.2500 33.6100 34.1300 19,900
Weekend
Weekend
33.1100 33.8700 33.1100 33.5600 60,700
33.6400 33.9700 33.1400 33.3200 46,800
34.7400 35.2500 34.1500 34.5500 31,300
14 · 6-K Pre-market · 06:00 ET 6-K ↗
35.7800 35.8500 34.5600 35.2000 22,000
36.5800 37.1000 33.2500 36.6400 39,600
Weekend
Weekend
38.1900 38.3700 37.0800 37.1300 45,800
40.4600 40.4600 38.3000 38.8000 56,300
42.7000 42.7900 41.5100 41.7000 26,200
42.2400 42.9200 42.1900 42.9200 18,500
41.8100 42.6000 41.6900 42.1900 19,700
Weekend
Weekend
41.8100 41.9400 41.3500 41.9400 18,600
42.4600 42.4600 41.5100 41.8000 34,900
43.1400 43.1400 41.6100 42.5300 100,700
44.5700 45.4300 44.5000 44.6600 65,100
13 · 6-K Pre-market · 06:05 ET 6-K ↗
No trading
Weekend
Weekend
42.4200 43.1600 41.7400 42.5700 71,800
39.0900 39.9400 38.8500 39.4300 39,500
37.7300 38.1000 37.0500 38.0500 104,300
37.7500 37.8900 37.0100 37.0100 23,900
36.8500 37.7800 36.8500 37.7800 57,500
Weekend
Weekend
36.1500 36.6000 35.0000 36.6000 61,100
12 · 6-K Pre-market · 06:10 ET 6-K ↗
33.3900 33.8800 33.0800 33.2400 7,800
32.6900 33.7000 32.6900 33.5700 29,700
31.8000 32.5100 31.8000 32.2100 51,900
29.7000 30.4500 29.7000 30.1400 17,900
Weekend
Weekend
30.3000 30.5600 30.3000 30.5400 15,900
No trading
29.9900 30.0200 29.3100 29.6300 4,700
30.3000 30.6500 30.0100 30.4600 9,300
29.9900 29.9900 29.1300 29.7000 5,200
Weekend
Weekend
29.9000 30.4900 29.9000 30.2700 15,500
No trading
28.7100 28.8900 28.5900 28.5900 4,000
28.3600 28.6400 28.2000 28.5200 9,500
28.8000 29.1200 28.4000 28.4000 10,400
Weekend
Weekend
28.1700 28.2500 27.9100 27.9200 3,300
28.1300 28.7200 28.1200 28.1900 4,500
28.0000 28.2800 27.7400 27.7500 3,400
28.2000 28.2400 27.5000 27.5700 5,900
11 · 6-K Pre-market · 06:00 ET 6-K ↗
28.6000 28.6700 28.2800 28.2900 26,800
Weekend
Weekend
29.4900 30.0000 28.9000 28.9000 28,200
29.1300 29.7600 29.0100 29.4600 12,300
29.5000 29.5000 28.6300 29.1600 4,200
10 · 6-K Pre-market · 06:05 ET 6-K ↗
29.8000 30.1500 29.8000 29.9300 11,900
28.5000 29.3700 28.5000 29.1100 42,900
Weekend
Weekend
28.0000 28.0000 27.8500 27.9700 8,200
27.5500 28.0900 27.5500 27.7700 8,300
27.7900 28.1500 27.7900 28.0700 6,000
27.4000 28.3600 27.4000 28.0300 17,600
27.0800 27.3200 25.2700 26.9700 17,300
9 · 6-K Pre-market · 06:05 ET 6-K ↗
Weekend
Weekend
26.8600 27.3300 26.8600 27.3300 5,300
No trading
27.0300 27.3500 26.5800 27.0500 19,900
27.7800 28.0900 27.7200 27.9200 11,500
28.1400 28.2700 27.2000 27.4700 41,200
Weekend
Weekend
28.9200 28.9200 28.1300 28.2000 13,600
29.8600 30.0000 29.0800 29.0800 13,700
29.4000 29.9400 29.4000 29.7900 17,400
28.8000 29.9200 28.8000 29.5000 26,400
30.2000 30.2000 27.8100 28.5500 47,600
Weekend
Weekend
29.4000 30.9800 29.4000 30.8200 74,600
8 · 6-K Pre-market · 06:06 ET 6-K ↗
27.5500 28.1000 27.5500 27.8900 29,500
24.5100 25.8700 23.8900 25.7600 89,900
7 · 6-K Pre-market · 06:10 ET 6-K ↗ 6 · 6-K Pre-market · 06:05 ET 6-K ↗
23.7800 23.7800 22.0000 22.1000 22,100
22.1500 22.4800 21.9300 22.4800 10,100
5 · 6-K Pre-market · 06:10 ET 6-K ↗
Weekend
Weekend
21.8700 21.9100 21.4000 21.9100 2,600
22.0200 22.0900 21.9400 21.9400 6,800
20.4500 21.6200 20.4500 21.6200 13,900
21.1300 21.6000 20.7700 21.0900 9,600
21.6500 22.4000 21.6500 21.9200 7,000
4 · 6-K Pre-market · 06:06 ET 6-K ↗
Weekend
Weekend
21.1200 21.2000 21.0000 21.2000 14,300
3 · 6-K Pre-market · 06:05 ET 6-K ↗
21.8000 21.8000 21.4000 21.4100 26,900
22.7800 22.7800 21.8000 21.9300 7,600
22.1200 23.3200 22.1200 23.2900 32,900
2 · 6-K Pre-market · 06:01 ET 6-K ↗
21.3300 21.7000 21.3300 21.4100 25,900
1 · 6-K Pre-market · 06:00 ET 6-K ↗
Weekend
Weekend
20.5200 20.6400 20.0500 20.4800 3,100

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.