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.

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Historical Stock Price — 2009

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2009-12-31$9.86$9.86216,200
2009-12-30$9.98$9.98212,600
2009-12-29$10.08$10.08246,900
2009-12-28$10.31$10.31166,500
2009-12-24$10.11$10.11121,000
2009-12-23$10.12$10.12134,100
2009-12-22$9.68$9.68144,400
2009-12-21$9.41$9.41123,600
2009-12-18$9.16$9.16412,700
2009-12-17$9.14$9.14145,100
2009-12-16$9.42$9.42305,100
2009-12-15$9.33$9.33117,800
2009-12-14$9.39$9.39134,200
2009-12-11$9.27$9.2799,100
2009-12-10$9.21$9.21312,400
2009-12-09$9.15$9.15187,800
2009-12-08$9.25$9.25251,500
2009-12-07$9.37$9.37166,200
2009-12-04$9.28$9.28313,700
2009-12-03$9.10$9.10617,700
2009-12-02$9.11$9.11938,900
2009-12-01$8.65$8.651,002,000
2009-11-30$8.51$8.51602,400
2009-11-27$8.25$8.25161,500
2009-11-25$8.49$8.49175,300
2009-11-24$8.39$8.39227,400
2009-11-23$8.46$8.46708,100
2009-11-20$8.13$8.13266,300
2009-11-19$8.16$8.16492,100
2009-11-18$8.42$8.42310,000
2009-11-17$8.48$8.48726,800
2009-11-16$8.48$8.48700,800
2009-11-13$8.10$8.10723,600
2009-11-12$8.16$8.16822,600
2009-11-11$8.50$8.50531,300
2009-11-10$8.25$8.252,079,800
2009-11-09$8.64$8.642,287,800
2009-11-06$10.37$10.37156,900
2009-11-05$10.35$10.35173,100
2009-11-04$9.64$9.64216,200
2009-11-03$9.93$9.93189,700
2009-11-02$9.95$9.95326,500
2009-10-30$10.13$10.13279,900
2009-10-29$10.84$10.84221,800
2009-10-28$10.35$10.35678,100
2009-10-27$11.46$11.46284,600
2009-10-26$11.42$11.42383,500
2009-10-23$11.13$11.13137,800
2009-10-22$11.33$11.33471,200
2009-10-21$11.49$11.49506,100
2009-10-20$12.02$12.02184,300
2009-10-19$12.10$12.10188,100
2009-10-16$11.96$11.96208,900
2009-10-15$12.22$12.22802,500
2009-10-14$12.38$12.38408,500
2009-10-13$12.25$12.25197,400
2009-10-12$12.44$12.44161,900
2009-10-09$12.55$12.55585,200
2009-10-08$12.41$12.41601,800
2009-10-07$12.22$12.22202,600
2009-10-06$11.89$11.89307,200
2009-10-05$11.20$11.20174,500
2009-10-02$10.81$10.81404,600
2009-10-01$11.10$11.10524,800
2009-09-30$11.30$11.30190,700
2009-09-29$11.52$11.52174,400
2009-09-28$11.75$11.75311,200
2009-09-25$11.74$11.74117,800
2009-09-24$11.96$11.96138,100
2009-09-23$12.29$12.29294,100
2009-09-22$12.44$12.44210,400
2009-09-21$12.09$12.09184,600
2009-09-18$12.08$12.08692,100
2009-09-17$12.16$12.16289,000
2009-09-16$12.32$12.32529,500
2009-09-15$11.88$11.88318,900
2009-09-14$11.30$11.30214,800
2009-09-11$11.19$11.19319,000
2009-09-10$11.30$11.30322,300
2009-09-09$10.53$10.53500,200
2009-09-08$10.08$10.08224,200
2009-09-04$9.85$9.85133,500
2009-09-03$9.64$9.64235,900
2009-09-02$9.38$9.38283,400
2009-09-01$9.36$9.36315,700
2009-08-31$9.65$9.65408,100
2009-08-28$9.79$9.79126,900
2009-08-27$10.11$10.11150,100
2009-08-26$10.07$10.07181,800
2009-08-25$10.20$10.20335,100
2009-08-24$10.34$10.34312,100
2009-08-21$10.55$10.55316,400
2009-08-20$10.43$10.43240,100
2009-08-19$10.45$10.45534,000
2009-08-18$10.06$10.06322,200
2009-08-17$10.00$10.00290,100
2009-08-14$10.63$10.63398,900
2009-08-13$11.11$11.11468,000
2009-08-12$11.02$11.02652,600
2009-08-11$11.10$11.10501,200
2009-08-10$11.24$11.24703,200
2009-08-07$11.00$11.001,471,200
2009-08-06$9.01$9.01401,600
2009-08-05$9.04$9.04478,000
2009-08-04$9.02$9.02423,800
2009-08-03$8.51$8.51300,600
2009-07-31$8.29$8.29211,100
2009-07-30$8.32$8.32326,100
2009-07-29$8.20$8.20402,900
2009-07-28$8.75$8.75233,200
2009-07-27$8.81$8.81300,800
2009-07-24$8.71$8.71314,900
2009-07-23$8.96$8.96359,600
2009-07-22$8.90$8.90311,800
2009-07-21$8.74$8.74165,500
2009-07-20$8.98$8.98263,300
2009-07-17$8.81$8.81220,600
2009-07-16$9.11$9.11172,500
2009-07-15$8.83$8.83381,700
2009-07-14$8.51$8.51215,400
2009-07-13$8.41$8.41364,000
2009-07-10$8.00$8.00188,400
2009-07-09$7.82$7.82386,100
2009-07-08$7.68$7.68215,800
2009-07-07$7.82$7.82165,700
2009-07-06$8.13$8.13188,500
2009-07-02$8.15$8.15264,600
2009-07-01$8.23$8.23157,600
2009-06-30$8.15$8.15188,800
2009-06-29$8.31$8.31306,200
2009-06-26$8.68$8.68557,800
2009-06-25$8.46$8.46210,700
2009-06-24$8.03$8.03405,600
2009-06-23$8.27$8.27464,500
2009-06-22$8.11$8.11394,200
2009-06-19$8.40$8.40415,800
2009-06-18$8.30$8.30512,600
2009-06-17$8.42$8.42853,200
2009-06-16$8.59$8.591,073,300
2009-06-15$8.02$8.02257,900
2009-06-12$8.33$8.33245,300
2009-06-11$8.40$8.40539,400
2009-06-10$8.42$8.42621,200
2009-06-09$8.53$8.53549,300
2009-06-08$8.52$8.52845,500
2009-06-05$8.51$8.51426,700
2009-06-04$8.54$8.54514,100
2009-06-03$8.72$8.72838,700
2009-06-02$8.71$8.71881,900
2009-06-01$8.24$8.24476,200
2009-05-29$7.81$7.81555,500
2009-05-28$7.51$7.51523,000
2009-05-27$7.25$7.251,137,500
2009-05-26$6.80$6.80720,100
2009-05-22$6.40$6.40441,300
2009-05-21$6.27$6.27415,400
2009-05-20$6.22$6.22392,400
2009-05-19$6.13$6.13314,800
2009-05-18$6.52$6.52390,000
2009-05-15$6.11$6.11340,200
2009-05-14$6.36$6.36671,000
2009-05-13$6.17$6.17690,000
2009-05-12$6.91$6.91491,600
2009-05-11$7.07$7.07677,600
2009-05-08$7.36$7.361,783,800
2009-05-07$7.89$7.89611,500
2009-05-06$8.14$8.14299,400
2009-05-05$8.40$8.40404,400
2009-05-04$8.59$8.59357,700
2009-05-01$8.47$8.47159,000
2009-04-30$8.44$8.44360,200
2009-04-29$8.95$8.95496,200
2009-04-28$8.29$8.29181,000
2009-04-27$8.35$8.35330,700
2009-04-24$8.61$8.61270,400
2009-04-23$8.19$8.19227,500
2009-04-22$8.19$8.19258,400
2009-04-21$8.12$8.12150,900
2009-04-20$7.94$7.94284,900
2009-04-17$8.42$8.42673,100
2009-04-16$8.69$8.69381,100
2009-04-15$8.08$8.08167,000
2009-04-14$7.90$7.90258,500
2009-04-13$8.34$8.34366,100
2009-04-09$8.09$8.09935,000
2009-04-08$7.36$7.36241,000
2009-04-07$6.97$6.97283,800
2009-04-06$7.50$7.50222,200
2009-04-03$7.73$7.73359,500
2009-04-02$8.06$8.06700,300
2009-04-01$7.63$7.63233,000
2009-03-31$7.20$7.20272,600
2009-03-30$7.06$7.06252,000
2009-03-27$7.43$7.43338,200
2009-03-26$7.72$7.72442,400
2009-03-25$7.49$7.49296,000
2009-03-24$7.30$7.30316,200
2009-03-23$7.49$7.49586,400
2009-03-20$7.06$7.06388,700
2009-03-19$7.38$7.38264,900
2009-03-18$7.30$7.30379,100
2009-03-17$7.03$7.03330,800
2009-03-16$6.76$6.76364,600
2009-03-13$6.78$6.78511,300
2009-03-12$6.28$6.28409,800
2009-03-11$5.77$5.77311,000
2009-03-10$5.86$5.86523,800
2009-03-09$5.51$5.51524,200
2009-03-06$6.04$6.04254,000
2009-03-05$6.02$6.02386,400
2009-03-04$6.86$6.86372,700
2009-03-03$6.35$6.35567,800
2009-03-02$6.09$6.09353,600
2009-02-27$6.62$6.622,095,900
2009-02-26$6.81$6.811,164,000
2009-02-25$6.02$6.02291,800
2009-02-24$6.27$6.27258,100
2009-02-23$6.00$6.00343,900
2009-02-20$6.26$6.26228,900
2009-02-19$6.02$6.02291,600
2009-02-18$5.99$5.99343,700
2009-02-17$6.00$6.00203,100
2009-02-13$6.43$6.43214,600
2009-02-12$6.24$6.24222,300
2009-02-11$6.51$6.51214,300
2009-02-10$6.63$6.63353,800
2009-02-09$7.00$7.00195,400
2009-02-06$7.00$7.00407,000
2009-02-05$7.00$7.00317,900
2009-02-04$6.91$6.91679,300
2009-02-03$6.89$6.89459,200
2009-02-02$6.96$6.96381,400
2009-01-30$6.65$6.65520,000
2009-01-29$6.95$6.95636,200
2009-01-28$7.11$7.11556,200
2009-01-27$6.98$6.98359,200
2009-01-26$6.68$6.68636,600
2009-01-23$6.05$6.05530,900
2009-01-22$6.05$6.05767,000
2009-01-21$5.60$5.60550,500
2009-01-20$5.48$5.48406,700
2009-01-16$6.18$6.18442,400
2009-01-15$6.00$6.00516,800
2009-01-14$6.14$6.14512,800
2009-01-13$6.44$6.44273,100
2009-01-12$6.48$6.48442,200
2009-01-09$6.60$6.60253,000
2009-01-08$7.30$7.30587,400
2009-01-07$7.29$7.29459,900
2009-01-06$7.28$7.28799,000
2009-01-05$6.72$6.72800,400
2009-01-02$6.65$6.65215,100