Cogent Communications Holdings, Inc CCOI

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Cogent Communications Holdings, Inc. - Common Stock · Company · Nasdaq · Communication Services / Telecom Services

Paper trade (simulated — no real money)

Fill: USD 7.4800 · FX 1 USD = 1.277900 SGD · about SGD 9.5587 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 42.96 → 7.48 · -82.6%
44.14025.7207.300 1,2 3 4 5,6 7 8,9,10 11 12 13 14,15 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
7.2400 7.5150 7.0400 7.4800 1,135,719
7.3900 7.6300 7.1300 7.3000 1,420,800
7.8400 7.8900 7.2900 7.4400 1,326,200
7.7500 8.0500 7.5100 7.7200 1,002,700
8.0600 8.1700 7.5500 7.7600 1,278,800
Weekend
Weekend
8.1400 8.1400 7.0600 8.0700 4,597,900
7.6100 8.3800 7.5600 8.3500 1,323,100
8.3900 8.3900 7.6600 7.7200 2,003,300
8.3300 8.8400 8.2900 8.5700 1,226,200
8.4400 8.6800 8.3000 8.4000 1,161,600
Weekend
Weekend
9.5300 9.6900 8.3300 8.5400 1,381,800
9.8100 9.8200 9.1200 9.5600 2,101,300
9.2500 10.3100 9.0900 9.9400 1,647,600
8.9500 9.4400 8.8500 9.3100 2,147,900
8.4400 8.9200 7.9900 8.8800 2,433,700
Weekend
Weekend
8.3700 8.5900 8.1200 8.4600 2,479,500
7.8300 8.5100 7.4200 8.2300 3,038,700
7.4000 7.9500 7.1300 7.7900 2,182,000
7.4600 7.6000 7.2500 7.3400 1,396,400
7.5900 7.6900 7.2800 7.4300 1,717,700
Weekend
Weekend
7.6400 8.0400 7.4400 7.6900 1,752,600
8.1100 8.2300 7.6100 7.6400 2,562,800
9.2700 9.2700 8.1000 8.1300 2,081,400
9.3400 9.6200 9.1500 9.3100 1,476,000
9.1500 9.4300 8.6000 9.2900 1,696,800
Weekend
Weekend
9.1900 9.1900 8.6700 9.0100 8,983,200
8.7700 9.2400 8.5600 9.2100 2,170,600
9.2200 9.5100 8.5900 8.6700 2,223,100
9.1200 9.3000 8.9000 9.2500 1,641,900
9.1200 9.4200 8.9300 9.3200 1,460,600
Weekend
Weekend
9.2300 9.7900 9.0400 9.3300 1,924,700
9.2000 9.3700 8.6000 9.0900 2,168,300
9.6600 9.7000 9.0000 9.3300 2,254,400
9.9800 10.1600 9.4600 9.6400 2,638,400
No trading
Weekend
Weekend
10.0200 10.3900 9.8500 10.0500 1,322,100
10.2200 10.2200 9.3500 9.9800 1,851,900
9.0000 10.4200 8.9400 10.2200 2,645,200
9.4200 9.5400 8.8800 9.0100 1,612,300
9.4200 9.6900 9.1900 9.5400 1,618,800
Weekend
Weekend
9.7000 10.0000 9.4000 9.4800 1,055,800
9.8300 10.1000 9.2700 9.6700 1,233,000
9.8900 10.2300 9.7200 10.0500 954,600
9.4900 10.0100 9.4800 9.8800 1,423,200
9.0500 9.8500 9.0500 9.4900 2,501,500
Weekend
Weekend
10.0900 10.1600 9.1600 9.1700 1,858,000
10.2500 10.3200 9.5700 10.0100 1,620,800
9.5900 10.3700 9.0300 10.3700 2,375,600
10.7600 10.7600 9.7500 10.1300 1,764,000
11.0800 11.1500 10.6400 10.7500 1,286,500
Weekend
Weekend
10.1700 11.4700 10.0500 11.3100 2,261,900
10.0000 10.4900 9.5500 10.3500 2,205,300
11.0400 11.2200 10.2400 10.2500 1,509,900
10.2700 10.8500 9.9800 10.8200 1,729,800
10.0000 10.7100 9.4200 10.3000 2,527,500
Weekend
Weekend
10.9700 11.1400 9.0000 9.9200 4,212,900
15 · 10-Q After market open · 11:21 ET 10-Q ↗
13.3700 13.4900 10.1000 10.9100 3,293,700
14 · 8-K Pre-market · 07:19 ET FORM 8-K ↗
13.0300 13.1500 12.3600 12.8700 1,462,500
13.2200 13.5000 12.9300 13.3000 1,083,900
13.6500 13.7700 13.2200 13.2300 1,415,500
Weekend
Weekend
13.2200 13.5300 12.7800 13.5000 962,600
12.5600 13.3100 12.4300 13.2400 1,014,000
12.7700 12.8700 11.8200 12.6900 1,407,700
12.2400 12.9800 12.1500 12.9500 998,300
11.9700 12.3800 11.8500 12.2200 999,700
Weekend
Weekend
12.8000 12.9500 11.8300 11.8700 951,000
12.6100 13.0600 12.3800 12.9000 981,500
13.0700 13.2800 12.7600 12.9300 835,500
12.5700 13.1100 12.4600 12.7000 1,099,700
11.0300 12.5300 10.9600 12.4000 1,525,900
Weekend
Weekend
11.4200 11.5700 10.9300 10.9700 1,549,100
12.5000 12.9400 11.6600 11.7100 926,900
12.3400 13.1300 12.2500 12.5200 796,300
12.9900 13.2800 11.9000 12.2500 1,133,200
12.7500 13.4500 12.7500 12.9300 1,172,800
Weekend
Weekend
12.7900 13.0600 12.5500 12.6100 795,100
12.3400 12.6700 12.1500 12.6400 931,000
11.4800 12.6900 11.4300 12.3600 1,276,000
12.1500 12.4500 11.6500 11.6600 1,343,000
13.2000 13.4800 12.1200 12.1900 1,424,500
Weekend
Weekend
No trading
14.4900 14.6800 12.5200 12.9900 2,188,900
13.9300 14.6000 13.9100 14.2800 1,445,900
14.0100 14.4600 13.2300 13.8800 2,193,600
13 · 8-K After-hours · 16:29 ET FORM 8-K ↗
13.6900 13.8400 12.3300 13.1400 1,978,900
Weekend
Weekend
13.0200 13.5000 12.8400 13.4100 2,535,600
13.4800 13.6600 13.0200 13.1600 1,887,100
14.3700 14.4400 13.3300 13.5200 1,455,500
14.5200 15.2800 14.0000 14.1600 1,126,100
14.0400 15.8800 13.6900 14.6600 1,911,300
Weekend
Weekend
No trading
15.0700 15.2400 14.1300 14.1900 1,917,600
15.9000 16.0700 14.5700 14.6100 1,120,700
16.4600 16.9700 16.0000 16.0500 927,600
12 · 8-K After-hours · 16:20 ET FORM 8-K ↗
16.0400 17.6500 16.0000 16.4500 1,237,700
Weekend
Weekend
15.0900 15.9100 14.6100 15.8600 1,119,100
14.4600 15.0900 14.4100 14.9400 966,800
15.7500 16.0500 14.4300 14.4600 1,076,300
16.8600 17.3400 15.7900 15.8100 624,800
17.0800 17.9500 16.7400 16.7800 994,600
Weekend
Weekend
17.4400 17.7400 16.3000 16.8300 763,600
16.6100 17.4300 16.6100 17.2900 581,700
17.4300 17.4900 16.2800 16.3900 1,090,200
17.5500 17.6000 17.0800 17.4000 768,400
17.2600 18.0600 17.0000 17.6900 1,100,500
Weekend
Weekend
19.0200 19.2600 17.1800 17.7600 2,002,100
21.5300 21.7000 19.8000 19.8200 1,414,200
19.9600 21.7200 19.4900 21.6200 1,135,400
11 · 8-K After-hours · 16:15 ET FORM 8-K ↗
20.1500 20.7000 18.9400 19.9600 2,447,800
No trading
Weekend
Weekend
18.4100 18.6900 17.6800 18.1600 595,200
17.5000 18.5800 17.3000 18.3700 909,100
17.5900 18.2600 16.7600 17.7700 972,800
17.0100 17.9400 16.7000 17.6800 1,033,300
16.8600 17.9000 16.7100 17.2200 1,221,600
Weekend
Weekend
15.9500 16.5000 15.5200 16.4800 1,006,500
15.9700 16.8100 15.7200 16.1100 812,700
15.9600 16.4800 15.5200 15.7700 916,300
16.4300 16.5300 15.9600 16.1100 894,400
16.7000 17.2500 16.2700 16.4000 1,072,600
Weekend
Weekend
16.3900 17.4700 16.0800 16.6500 1,184,500
16.5200 17.1700 16.1200 16.3200 1,370,600
18.3000 18.6200 16.2000 16.6000 1,941,200
16.6100 18.6500 16.1000 18.0600 4,009,400
10 · 8-K After market open · 15:35 ET FORM 8-K ↗ 9 · 10-Q After market open · 11:52 ET 10-Q ↗
16.4900 17.8900 14.8200 16.3700 7,556,400
8 · 8-K Pre-market · 07:05 ET FORM 8-K ↗
Weekend
Weekend
22.9500 24.2300 22.9000 23.1600 1,461,500
23.3200 23.7600 21.9800 22.6500 1,739,300
23.9500 23.9600 23.2000 23.4600 608,300
24.5300 24.8300 23.8900 24.2100 477,700
24.6000 25.2100 24.2400 24.6800 634,000
Weekend
Weekend
23.9300 24.7200 23.4700 24.4700 537,000
23.3200 24.2100 22.9700 23.9700 799,600
23.7000 24.0400 22.7300 23.3400 757,000
24.4300 24.4900 23.3900 23.5000 841,000
23.4700 24.7600 23.2100 24.3900 1,183,100
Weekend
Weekend
23.5600 23.8500 23.0600 23.6300 805,700
23.5300 24.0000 22.3900 23.2500 910,200
22.7800 24.3100 22.4800 23.5300 922,100
21.6300 23.0600 20.9500 22.5400 1,085,600
20.2700 21.9600 19.7900 21.3800 1,038,600
Weekend
Weekend
20.7300 21.1500 20.1900 20.3100 632,800
19.6400 20.5100 19.4900 20.4400 851,600
21.0500 21.3500 19.5000 19.7200 937,700
19.2000 20.4200 18.8200 20.1600 956,200
19.0200 19.4700 18.8600 19.2200 716,000
Weekend
Weekend
No trading
18.0400 19.0300 17.7900 19.0000 775,000
19.0500 19.2800 18.1900 18.3100 781,500
17.7900 18.9000 17.3500 18.8400 1,656,100
17.7400 18.1300 17.2700 17.4600 804,100
Weekend
Weekend
17.7200 17.9100 17.2200 17.6200 905,100
18.0700 18.5900 17.5800 17.9200 922,500
18.4500 18.7800 18.1000 18.3400 764,300
18.6300 19.2700 18.0400 18.2700 735,500
18.4300 19.4400 18.1000 18.8500 1,489,900
Weekend
Weekend
7 · DEF 14A After-hours · 16:29 ET DEF 14A ↗
20.0300 20.0300 18.0200 18.0500 4,006,700
19.0000 20.0600 18.7000 20.0200 851,100
20.2200 20.2400 19.2800 19.3300 807,900
19.5400 21.2300 19.3400 20.3300 949,200
18.8200 19.7800 18.5100 19.3300 872,100
Weekend
Weekend
19.7800 20.2500 18.6200 18.8000 1,046,800
20.9700 21.1800 19.5000 19.6300 1,010,300
22.2400 22.5000 21.1200 21.3400 736,000
21.8500 22.2400 21.3300 22.0100 1,106,300
22.7700 22.9800 21.5800 22.5000 1,001,900
Weekend
Weekend
22.4300 23.5000 21.9100 23.0700 932,400
22.6300 23.5000 22.1800 22.7700 1,424,600
22.0000 23.3400 21.4500 23.0900 1,286,500
21.6800 21.9900 20.5000 21.6300 1,190,000
18.2400 22.3800 18.1600 22.1900 2,103,600
Weekend
Weekend
18.6000 18.7800 17.9900 18.7600 904,000
18.6700 19.1900 18.2600 18.5500 958,000
18.8500 18.9800 18.0300 18.4900 994,600
18.2400 18.9600 17.6800 18.9400 1,605,600
18.1800 18.8100 16.4100 17.8700 3,466,400
Weekend
Weekend
6 · 10-K After market open · 11:11 ET 10-K ↗
22.3000 22.3900 17.4200 18.5900 7,029,900
5 · 8-K Pre-market · 07:20 ET FORM 8-K ↗
27.7500 27.8800 25.5100 26.3100 2,298,100
26.3300 28.7100 25.7800 27.6600 1,570,800
26.6100 27.1800 26.3100 26.7900 1,268,700
No trading
Weekend
Weekend
26.3500 26.7800 25.6300 26.4600 568,100
26.8400 27.3400 25.5900 26.3000 906,600
26.5500 26.5600 25.6000 26.5100 798,500
25.2900 26.5900 24.8000 26.3600 1,240,200
24.3000 25.6600 23.6200 25.0700 882,100
Weekend
Weekend
22.9200 24.5000 22.6800 24.2900 1,088,600
24.2500 24.2800 22.3100 22.5500 1,248,700
24.3100 24.6000 23.3400 24.1100 910,100
24.7300 25.3300 23.7800 24.2500 1,103,000
23.8800 25.5500 23.8400 24.7100 1,085,400
Weekend
Weekend
24.2200 24.6000 23.6700 24.3000 838,700
23.4100 24.8100 23.0900 24.0400 791,200
24.1900 24.6400 23.2700 23.3900 513,800
24.0200 24.0200 23.4500 23.8700 438,500
24.2900 24.3500 23.6200 24.0200 450,400
Weekend
Weekend
24.5500 24.8400 24.2100 24.2900 451,500
23.9100 25.0500 23.7900 24.7100 646,700
23.0400 23.9800 22.8800 23.7200 715,800
23.2100 24.0100 22.7900 23.1200 929,500
No trading
Weekend
Weekend
23.0100 23.8800 22.7800 23.8500 956,100
23.4800 23.8000 22.8400 23.2100 679,500
22.6100 24.2300 22.3700 23.4400 985,100
23.2800 23.5000 22.2600 22.7600 800,400
22.9600 23.6100 22.8400 23.2800 698,800
Weekend
Weekend
22.4800 23.2300 22.3000 22.9400 725,800
22.1200 22.7500 21.9800 22.3200 1,083,500
4 · 8-K After-hours · 16:03 ET FORM 8-K ↗
21.0000 22.1700 20.9200 22.1200 961,700
19.4700 20.7800 19.3800 20.7200 892,400
20.5000 20.7900 19.4500 19.5100 1,308,600
Weekend
Weekend
21.6200 21.7500 20.5000 20.6200 1,021,200
No trading
21.8900 22.0700 21.2200 21.5600 1,526,400
21.8600 22.5900 21.6000 21.8600 1,684,500
22.4100 22.8600 21.9200 21.9500 895,800
Weekend
Weekend
22.2800 22.6100 21.7600 22.5600 642,900
No trading
21.9100 22.7200 21.8100 22.2500 472,600
22.1800 22.3300 20.9300 21.9000 1,425,400
21.8200 23.1400 21.8000 22.5700 1,241,300
Weekend
Weekend
22.5300 22.5300 21.6900 21.7800 3,379,500
22.6400 23.1100 21.9400 22.5100 1,405,200
22.9100 24.0800 22.5800 22.6800 2,118,400
22.7900 23.6400 22.4600 23.0500 1,380,400
23.4100 23.7100 22.4200 22.8400 1,445,600
Weekend
Weekend
24.2800 24.3300 23.0600 23.2700 931,700
23.9900 25.9700 23.9000 24.3300 1,843,000
21.7700 24.4500 21.1200 23.8200 1,988,200
21.2000 21.4600 20.4400 21.4400 978,700
19.7900 21.7900 19.7900 21.1900 1,652,600
Weekend
Weekend
18.6400 19.7900 18.5700 19.6200 1,725,700
19.5000 19.6600 18.7400 18.7500 1,035,600
19.8400 20.1300 19.2500 19.5900 841,100
19.5900 20.5800 19.3900 19.9900 1,224,300
18.7900 19.8200 18.7100 19.4700 1,345,700
Weekend
Weekend
19.0100 19.5000 18.8000 19.0800 900,600
No trading
17.9300 19.5000 17.8400 19.0000 1,970,600
17.0800 18.0000 16.7800 17.8900 1,617,500
17.4200 17.4200 16.7000 17.1600 1,626,300
Weekend
Weekend
16.6800 17.2100 16.2500 17.0500 2,745,300
17.4500 17.7200 16.6600 16.6800 2,536,700
19.6500 19.7800 16.8700 16.9800 1,719,200
18.9600 20.2800 18.7200 19.8100 2,523,700
3 · 8-K After-hours · 17:30 ET FORM 8-K ↗
17.4900 18.9800 17.3200 18.5000 2,382,300
Weekend
Weekend
16.1400 18.1200 15.9600 17.5500 2,807,600
18.1700 18.3700 16.3700 16.6800 3,203,200
20.5900 20.8900 18.4600 18.4900 3,686,100
21.7400 22.8200 20.4900 20.6200 2,464,500
23.6400 24.6000 21.9200 22.1200 2,784,200
Weekend
Weekend
24.1700 25.8100 23.2100 23.4900 4,109,300
2 · 10-Q After market open · 11:13 ET 10-Q ↗
30.0000 30.3200 24.2500 24.9500 5,599,500
1 · 8-K Pre-market · 07:16 ET FORM 8-K ↗
39.7700 40.1500 37.8400 38.3000 1,728,900
40.4400 40.8100 39.3000 39.9600 702,500
40.7600 41.0500 39.3300 40.7700 825,000
Weekend
Weekend
39.9000 41.5300 39.0300 41.2500 831,800
42.5400 42.9300 39.7200 40.2100 1,120,400
43.6000 44.3100 42.4500 42.9900 709,500
44.2000 44.2000 43.2200 43.4700 634,100
43.1500 44.2500 42.6300 44.1400 827,500
Weekend
Weekend
43.2600 43.8400 42.8900 42.9600 745,300

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.

15 10-Q 10-Q (opens SEC filing in a new tab) After market open · 11:21 ET Summarise
14 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:19 ET Summarise
13 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:29 ET Summarise
12 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:20 ET Summarise
11 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
10 8-K FORM 8-K (opens SEC filing in a new tab) After market open · 15:35 ET Summarise
9 10-Q 10-Q (opens SEC filing in a new tab) After market open · 11:52 ET Summarise
8 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:05 ET Summarise
7 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:29 ET Summarise
6 10-K 10-K (opens SEC filing in a new tab) After market open · 11:11 ET Summarise
5 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:20 ET Summarise
4 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
3 8-K FORM 8-K (opens SEC filing in a new tab) After-hours · 17:30 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After market open · 11:13 ET Summarise
1 8-K FORM 8-K (opens SEC filing in a new tab) Pre-market · 07:16 ET Summarise