NASDAQ:CCOI | Historical Stock Price | COGENT COMMUNICATIONS HOLDINGS, INC.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2002-02-05 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$3.62$7.63$16.06$33.84$71.30$150.222002-02-052026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

View year

Historical Stock Price — 2015

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2015-12-31$34.69$38.77555,300
2015-12-30$34.80$38.89238,100
2015-12-29$35.35$39.51138,300
2015-12-28$34.90$39.01203,500
2015-12-24$35.30$39.45131,000
2015-12-23$35.31$39.46233,600
2015-12-22$34.37$38.41197,300
2015-12-21$33.77$37.74233,100
2015-12-18$33.11$37.01630,200
2015-12-17$33.99$37.99312,200
2015-12-16$34.05$38.06414,000
2015-12-15$33.47$37.41314,700
2015-12-14$32.69$36.54279,800
2015-12-11$32.63$36.47375,800
2015-12-10$33.54$37.49541,200
2015-12-09$33.78$37.75257,000
2015-12-08$33.85$37.83216,000
2015-12-07$33.69$37.65205,900
2015-12-04$33.74$37.71230,200
2015-12-03$34.03$38.03477,100
2015-12-02$33.78$37.75304,600
2015-12-01$33.59$37.54344,300
2015-11-30$33.56$37.51397,700
2015-11-27$33.41$37.3493,800
2015-11-25$33.33$37.25278,500
2015-11-24$32.81$36.67504,800
2015-11-23$33.73$37.70158,800
2015-11-20$33.74$37.71358,600
2015-11-19$33.34$37.26414,000
2015-11-18$33.08$36.97797,600
2015-11-17$34.17$37.80875,900
2015-11-16$34.09$37.71345,400
2015-11-13$34.00$37.61225,400
2015-11-12$34.68$38.36230,800
2015-11-11$34.98$38.69290,100
2015-11-10$34.95$38.66462,800
2015-11-09$34.92$38.63602,500
2015-11-06$34.70$38.38779,800
2015-11-05$34.22$37.851,519,900
2015-11-04$30.92$34.20374,400
2015-11-03$31.04$34.34313,200
2015-11-02$31.47$34.81339,800
2015-10-30$30.72$33.98313,100
2015-10-29$30.75$34.02430,600
2015-10-28$30.89$34.17391,700
2015-10-27$30.19$33.40379,300
2015-10-26$30.85$34.13335,600
2015-10-23$31.35$34.68568,900
2015-10-22$30.96$34.25443,800
2015-10-21$29.30$32.41324,300
2015-10-20$29.68$32.83328,900
2015-10-19$29.48$32.61426,500
2015-10-16$29.71$32.87455,300
2015-10-15$29.71$32.87310,700
2015-10-14$28.87$31.94418,800
2015-10-13$29.29$32.40317,200
2015-10-12$29.25$32.36441,200
2015-10-09$29.01$32.09499,500
2015-10-08$29.08$32.17583,700
2015-10-07$28.74$31.79627,800
2015-10-06$28.63$31.67271,600
2015-10-05$28.53$31.56556,600
2015-10-02$27.29$30.19529,600
2015-10-01$26.88$29.73771,900
2015-09-30$27.16$30.04744,100
2015-09-29$26.55$29.37624,000
2015-09-28$26.50$29.31828,200
2015-09-25$26.34$29.14387,500
2015-09-24$26.16$28.94867,700
2015-09-23$26.36$29.16484,300
2015-09-22$26.93$29.791,226,500
2015-09-21$27.60$30.53733,400
2015-09-18$28.17$31.16544,100
2015-09-17$27.69$30.63343,000
2015-09-16$27.47$30.39714,700
2015-09-15$27.99$30.96677,200
2015-09-14$27.50$30.42572,500
2015-09-11$27.39$30.30329,000
2015-09-10$27.45$30.37279,100
2015-09-09$27.30$30.20538,300
2015-09-08$27.44$30.35605,400
2015-09-04$27.18$30.07293,400
2015-09-03$27.39$30.30381,200
2015-09-02$27.39$30.30365,900
2015-09-01$27.20$30.09368,600
2015-08-31$27.77$30.72419,500
2015-08-28$27.46$30.38687,800
2015-08-27$27.35$30.25777,200
2015-08-26$27.52$30.44772,200
2015-08-25$27.39$30.30630,700
2015-08-24$27.57$30.50909,500
2015-08-21$28.31$31.32510,200
2015-08-20$28.62$31.66483,300
2015-08-19$28.92$31.99548,800
2015-08-18$29.18$31.90663,200
2015-08-17$29.25$31.98498,400
2015-08-14$29.16$31.88484,100
2015-08-13$28.78$31.47622,800
2015-08-12$29.22$31.95444,700
2015-08-11$28.91$31.61487,900
2015-08-10$29.21$31.94406,600
2015-08-07$28.70$31.381,535,700
2015-08-06$29.14$31.862,051,300
2015-08-05$30.98$33.87827,100
2015-08-04$31.58$34.53682,200
2015-08-03$31.38$34.31469,300
2015-07-31$31.79$34.76463,200
2015-07-30$31.38$34.31322,600
2015-07-29$31.24$34.15497,200
2015-07-28$31.25$34.17510,600
2015-07-27$31.49$34.43328,700
2015-07-24$31.63$34.58333,500
2015-07-23$32.12$35.12300,500
2015-07-22$32.24$35.25375,100
2015-07-21$32.46$35.49348,200
2015-07-20$32.71$35.76350,200
2015-07-17$32.75$35.81338,900
2015-07-16$33.31$36.42442,200
2015-07-15$32.86$35.93265,700
2015-07-14$32.98$36.06255,200
2015-07-13$32.68$35.73222,100
2015-07-10$32.52$35.55339,700
2015-07-09$32.19$35.19188,300
2015-07-08$32.17$35.17493,200
2015-07-07$32.25$35.26754,300
2015-07-06$32.71$35.76417,300
2015-07-02$32.92$35.99466,200
2015-07-01$33.53$36.66745,200
2015-06-30$33.84$37.00593,000
2015-06-29$33.62$36.76606,500
2015-06-26$34.07$37.25738,600
2015-06-25$34.38$37.59447,900
2015-06-24$34.35$37.56712,700
2015-06-23$34.14$37.33337,900
2015-06-22$33.86$37.02367,300
2015-06-19$34.22$37.41902,600
2015-06-18$33.98$37.15858,800
2015-06-17$33.14$36.23599,300
2015-06-16$32.80$35.86681,900
2015-06-15$32.13$35.13640,300
2015-06-12$32.11$35.11826,900
2015-06-11$31.65$34.60708,200
2015-06-10$31.09$33.99472,900
2015-06-09$30.61$33.47264,500
2015-06-08$30.68$33.54316,500
2015-06-05$30.66$33.52446,500
2015-06-04$31.03$33.93197,800
2015-06-03$31.40$34.33441,200
2015-06-02$31.06$33.96607,300
2015-06-01$31.24$34.15547,500
2015-05-29$31.42$34.35717,000
2015-05-28$31.66$34.61829,900
2015-05-27$31.85$34.82605,500
2015-05-26$32.12$35.12515,600
2015-05-22$31.99$34.97604,000
2015-05-21$32.08$35.07557,000
2015-05-20$32.45$35.48445,100
2015-05-19$32.75$35.35757,600
2015-05-18$33.75$36.43483,300
2015-05-15$33.46$36.11689,000
2015-05-14$33.00$35.62701,600
2015-05-13$33.00$35.62492,900
2015-05-12$33.01$35.63667,500
2015-05-11$32.32$34.88503,500
2015-05-08$32.70$35.291,430,500
2015-05-07$31.64$34.152,784,100
2015-05-06$35.47$38.28576,200
2015-05-05$35.26$38.06363,900
2015-05-04$35.29$38.09261,800
2015-05-01$35.12$37.90379,500
2015-04-30$34.99$37.76416,000
2015-04-29$35.15$37.94333,900
2015-04-28$35.13$37.92272,300
2015-04-27$34.36$37.08286,100
2015-04-24$34.40$37.13512,700
2015-04-23$34.11$36.81376,900
2015-04-22$34.54$37.28336,900
2015-04-21$34.30$37.02321,000
2015-04-20$34.24$36.95339,700
2015-04-17$33.89$36.58963,000
2015-04-16$34.55$37.291,345,500
2015-04-15$35.92$38.77201,600
2015-04-14$35.94$38.79264,500
2015-04-13$35.40$38.21140,200
2015-04-10$35.45$38.26117,000
2015-04-09$35.07$37.85251,000
2015-04-08$35.61$38.43226,700
2015-04-07$35.36$38.16250,800
2015-04-06$35.67$38.50398,000
2015-04-02$35.47$38.28307,400
2015-04-01$35.21$38.00367,600
2015-03-31$35.33$38.13518,400
2015-03-30$35.23$38.02479,100
2015-03-27$35.08$37.86273,000
2015-03-26$34.88$37.65375,500
2015-03-25$34.87$37.63359,600
2015-03-24$35.07$37.85194,100
2015-03-23$35.24$38.03273,300
2015-03-20$35.10$37.88733,700
2015-03-19$34.69$37.44349,000
2015-03-18$34.55$37.29875,500
2015-03-17$34.28$37.00636,200
2015-03-16$35.24$38.03486,200
2015-03-13$34.86$37.62314,200
2015-03-12$34.91$37.68442,000
2015-03-11$34.31$37.03370,000
2015-03-10$34.76$37.52381,400
2015-03-09$35.36$38.16205,500
2015-03-06$35.93$38.40278,100
2015-03-05$36.34$38.84273,800
2015-03-04$35.99$38.47286,100
2015-03-03$36.07$38.55457,200
2015-03-02$36.45$38.96428,000
2015-02-27$36.72$39.25403,200
2015-02-26$36.25$38.74683,100
2015-02-25$36.56$39.07664,800
2015-02-24$38.75$41.41416,900
2015-02-23$38.96$41.64222,200
2015-02-20$39.40$42.11148,000
2015-02-19$39.10$41.79186,700
2015-02-18$39.50$42.22241,800
2015-02-17$38.89$41.56203,800
2015-02-13$38.90$41.58262,200
2015-02-12$38.91$41.59382,400
2015-02-11$39.07$41.76462,300
2015-02-10$39.89$42.63457,500
2015-02-09$38.43$41.07518,600
2015-02-06$38.55$41.20405,200
2015-02-05$39.52$42.24495,000
2015-02-04$38.41$41.05682,200
2015-02-03$37.72$40.31865,600
2015-02-02$37.50$40.08812,700
2015-01-30$37.06$39.61224,200
2015-01-29$37.84$40.44166,800
2015-01-28$37.30$39.87265,800
2015-01-27$37.82$40.42269,100
2015-01-26$38.30$40.93152,600
2015-01-23$38.25$40.88239,300
2015-01-22$38.13$40.75350,500
2015-01-21$37.29$39.85457,300
2015-01-20$37.80$40.40593,900
2015-01-16$36.75$39.28351,700
2015-01-15$36.14$38.63603,500
2015-01-14$35.91$38.38398,500
2015-01-13$35.30$37.73284,600
2015-01-12$34.23$36.58247,500
2015-01-09$33.99$36.33201,900
2015-01-08$34.00$36.34351,900
2015-01-07$34.62$37.00306,800
2015-01-06$34.43$36.80339,200
2015-01-05$35.15$37.57458,200
2015-01-02$34.97$37.37284,900