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 — 2011

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2011-12-30$16.89$16.89187,400
2011-12-29$16.65$16.65153,300
2011-12-28$16.34$16.34109,400
2011-12-27$16.80$16.8092,800
2011-12-23$16.99$16.99174,200
2011-12-22$16.96$16.96167,500
2011-12-21$16.94$16.94220,200
2011-12-20$16.79$16.79404,200
2011-12-19$16.38$16.38247,300
2011-12-16$16.74$16.74327,800
2011-12-15$16.36$16.36563,900
2011-12-14$17.10$17.10403,500
2011-12-13$17.52$17.52708,700
2011-12-12$17.84$17.84339,900
2011-12-09$17.13$17.13346,300
2011-12-08$16.35$16.35312,000
2011-12-07$16.69$16.69170,500
2011-12-06$16.74$16.74174,200
2011-12-05$16.80$16.80280,000
2011-12-02$16.74$16.74209,900
2011-12-01$16.47$16.47310,800
2011-11-30$17.01$17.01806,600
2011-11-29$15.81$15.81241,900
2011-11-28$15.38$15.38244,500
2011-11-25$14.46$14.4696,400
2011-11-23$14.57$14.57172,000
2011-11-22$15.00$15.00348,000
2011-11-21$15.36$15.36156,700
2011-11-18$15.91$15.91192,400
2011-11-17$16.19$16.19385,900
2011-11-16$16.24$16.24309,300
2011-11-15$16.24$16.24631,100
2011-11-14$16.17$16.171,001,400
2011-11-11$16.38$16.38311,900
2011-11-10$15.47$15.47190,100
2011-11-09$15.84$15.84333,600
2011-11-08$16.47$16.47403,400
2011-11-07$16.60$16.60551,300
2011-11-04$16.54$16.54449,300
2011-11-03$16.14$16.14296,500
2011-11-02$15.72$15.72313,800
2011-11-01$15.33$15.33300,600
2011-10-31$16.05$16.05243,700
2011-10-28$15.84$15.84219,100
2011-10-27$15.93$15.93673,000
2011-10-26$15.28$15.28537,100
2011-10-25$15.23$15.23328,400
2011-10-24$15.66$15.66214,300
2011-10-21$15.28$15.28240,400
2011-10-20$15.14$15.14310,200
2011-10-19$14.85$14.85185,000
2011-10-18$15.19$15.19307,700
2011-10-17$14.88$14.88367,100
2011-10-14$15.25$15.25495,800
2011-10-13$15.24$15.24382,200
2011-10-12$15.11$15.11222,800
2011-10-11$14.68$14.68427,500
2011-10-10$14.42$14.42419,900
2011-10-07$13.95$13.95237,300
2011-10-06$14.20$14.20262,800
2011-10-05$13.85$13.85176,000
2011-10-04$13.63$13.63467,000
2011-10-03$12.83$12.83344,200
2011-09-30$13.45$13.45305,500
2011-09-29$13.96$13.96258,400
2011-09-28$14.19$14.19311,300
2011-09-27$14.37$14.37472,800
2011-09-26$14.59$14.59332,900
2011-09-23$14.33$14.33422,800
2011-09-22$13.99$13.99544,100
2011-09-21$14.04$14.04354,900
2011-09-20$14.35$14.35599,400
2011-09-19$14.34$14.34603,900
2011-09-16$13.85$13.851,905,100
2011-09-15$13.27$13.27342,100
2011-09-14$13.28$13.28201,900
2011-09-13$13.22$13.22211,000
2011-09-12$12.54$12.54327,400
2011-09-09$12.68$12.68255,600
2011-09-08$12.94$12.94138,000
2011-09-07$13.33$13.33271,300
2011-09-06$13.03$13.03268,600
2011-09-02$13.17$13.17194,800
2011-09-01$13.77$13.77324,100
2011-08-31$14.18$14.18257,700
2011-08-30$14.73$14.73261,200
2011-08-29$14.30$14.30185,400
2011-08-26$13.76$13.76249,300
2011-08-25$13.00$13.00133,900
2011-08-24$13.54$13.54127,300
2011-08-23$13.23$13.23377,400
2011-08-22$12.84$12.84167,200
2011-08-19$13.06$13.06218,400
2011-08-18$13.11$13.11312,100
2011-08-17$14.21$14.21186,200
2011-08-16$14.08$14.08435,600
2011-08-15$14.85$14.85118,900
2011-08-12$14.50$14.50219,800
2011-08-11$14.24$14.24446,700
2011-08-10$13.50$13.50616,300
2011-08-09$13.51$13.51885,300
2011-08-08$13.27$13.27537,600
2011-08-05$14.80$14.80561,500
2011-08-04$14.24$14.24396,000
2011-08-03$15.22$15.22359,100
2011-08-02$15.21$15.21289,100
2011-08-01$15.15$15.15375,500
2011-07-29$15.07$15.07138,300
2011-07-28$15.31$15.31115,100
2011-07-27$15.27$15.27204,800
2011-07-26$15.88$15.88107,200
2011-07-25$15.95$15.95168,000
2011-07-22$16.09$16.09117,400
2011-07-21$16.15$16.15452,400
2011-07-20$16.22$16.22368,400
2011-07-19$16.36$16.36294,200
2011-07-18$16.41$16.41123,800
2011-07-15$16.78$16.78180,700
2011-07-14$16.75$16.75182,900
2011-07-13$17.27$17.27175,400
2011-07-12$16.96$16.96380,200
2011-07-11$16.99$16.99319,900
2011-07-08$17.65$17.65139,500
2011-07-07$17.82$17.82295,900
2011-07-06$17.72$17.72197,100
2011-07-05$17.26$17.26252,100
2011-07-01$17.05$17.05325,600
2011-06-30$17.01$17.01363,800
2011-06-29$16.93$16.93259,000
2011-06-28$16.82$16.82389,900
2011-06-27$16.79$16.79478,000
2011-06-24$16.22$16.22604,100
2011-06-23$15.75$15.75269,100
2011-06-22$15.67$15.67764,600
2011-06-21$15.60$15.60431,500
2011-06-20$15.47$15.47356,600
2011-06-17$15.35$15.35491,300
2011-06-16$15.54$15.54573,200
2011-06-15$15.19$15.19259,800
2011-06-14$15.28$15.28189,800
2011-06-13$14.89$14.89151,100
2011-06-10$14.88$14.88191,200
2011-06-09$14.91$14.91242,300
2011-06-08$14.84$14.84168,300
2011-06-07$14.95$14.95293,500
2011-06-06$14.99$14.99217,900
2011-06-03$15.19$15.19210,000
2011-06-02$15.25$15.25119,600
2011-06-01$15.42$15.42629,700
2011-05-31$15.55$15.55458,900
2011-05-27$15.20$15.20124,900
2011-05-26$15.10$15.10278,100
2011-05-25$14.49$14.49150,200
2011-05-24$14.28$14.28596,200
2011-05-23$13.88$13.88121,000
2011-05-20$14.25$14.25159,000
2011-05-19$14.37$14.37136,600
2011-05-18$14.35$14.35234,300
2011-05-17$14.04$14.04187,800
2011-05-16$14.03$14.03219,900
2011-05-13$14.43$14.43268,000
2011-05-12$14.81$14.81110,300
2011-05-11$14.81$14.81136,000
2011-05-10$15.03$15.03127,100
2011-05-09$14.76$14.76137,000
2011-05-06$14.67$14.67291,000
2011-05-05$14.44$14.44326,400
2011-05-04$14.04$14.04225,500
2011-05-03$14.34$14.34221,000
2011-05-02$14.43$14.43447,400
2011-04-29$14.51$14.51168,000
2011-04-28$14.28$14.28165,000
2011-04-27$14.29$14.29298,000
2011-04-26$13.84$13.84273,000
2011-04-25$13.91$13.91135,400
2011-04-21$13.82$13.8285,200
2011-04-20$13.74$13.74172,900
2011-04-19$13.40$13.40482,700
2011-04-18$13.12$13.12373,200
2011-04-15$12.99$12.99714,600
2011-04-14$13.06$13.06388,900
2011-04-13$13.46$13.46482,400
2011-04-12$14.13$14.13472,700
2011-04-11$14.72$14.72681,200
2011-04-08$14.52$14.52273,000
2011-04-07$14.53$14.53309,200
2011-04-06$14.64$14.64201,100
2011-04-05$14.67$14.67137,400
2011-04-04$14.75$14.75202,000
2011-04-01$14.66$14.66231,800
2011-03-31$14.25$14.25382,300
2011-03-30$14.27$14.27278,700
2011-03-29$14.17$14.17229,500
2011-03-28$13.90$13.90184,800
2011-03-25$14.07$14.07287,400
2011-03-24$13.99$13.99207,700
2011-03-23$13.86$13.86219,200
2011-03-22$14.16$14.1665,300
2011-03-21$14.18$14.18128,500
2011-03-18$13.83$13.83249,400
2011-03-17$13.62$13.62219,600
2011-03-16$13.90$13.90234,300
2011-03-15$14.16$14.16137,000
2011-03-14$14.39$14.39163,400
2011-03-11$14.45$14.45267,400
2011-03-10$14.57$14.57295,800
2011-03-09$14.91$14.91136,300
2011-03-08$14.99$14.99200,800
2011-03-07$14.81$14.81241,600
2011-03-04$15.51$15.51488,700
2011-03-03$15.12$15.12280,700
2011-03-02$14.44$14.44200,200
2011-03-01$14.25$14.25297,400
2011-02-28$14.74$14.74479,000
2011-02-25$14.73$14.73297,200
2011-02-24$14.67$14.67443,900
2011-02-23$13.86$13.86268,900
2011-02-22$14.05$14.05283,300
2011-02-18$14.57$14.57159,800
2011-02-17$14.56$14.56128,700
2011-02-16$14.46$14.46138,700
2011-02-15$14.36$14.36134,400
2011-02-14$14.15$14.15301,700
2011-02-11$14.09$14.09121,200
2011-02-10$13.86$13.86111,900
2011-02-09$13.70$13.70193,800
2011-02-08$13.94$13.94161,600
2011-02-07$13.31$13.31122,600
2011-02-04$13.29$13.29236,400
2011-02-03$13.37$13.37183,800
2011-02-02$13.63$13.63175,500
2011-02-01$13.91$13.91158,000
2011-01-31$13.64$13.64325,900
2011-01-28$13.28$13.28215,500
2011-01-27$13.81$13.81207,500
2011-01-26$14.05$14.05245,700
2011-01-25$13.86$13.86217,000
2011-01-24$13.94$13.94163,600
2011-01-21$14.03$14.03238,000
2011-01-20$14.51$14.51308,200
2011-01-19$14.90$14.90340,200
2011-01-18$15.17$15.17215,600
2011-01-14$15.17$15.17442,000
2011-01-13$14.78$14.78369,200
2011-01-12$14.78$14.78270,400
2011-01-11$14.37$14.37239,000
2011-01-10$14.13$14.13662,200
2011-01-07$13.74$13.74460,200
2011-01-06$13.91$13.91272,200
2011-01-05$14.56$14.56443,400
2011-01-04$13.91$13.91535,000
2011-01-03$14.10$14.10239,900