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 — 2008

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2008-12-31$6.53$6.53460,300
2008-12-30$6.00$6.00188,100
2008-12-29$6.04$6.04188,700
2008-12-26$6.52$6.5267,500
2008-12-24$6.34$6.34111,300
2008-12-23$5.86$5.86395,300
2008-12-22$5.55$5.55305,600
2008-12-19$5.85$5.85827,400
2008-12-18$5.89$5.89587,600
2008-12-17$5.99$5.99271,800
2008-12-16$5.90$5.90380,500
2008-12-15$5.60$5.60302,000
2008-12-12$5.85$5.85334,000
2008-12-11$5.29$5.29398,500
2008-12-10$5.74$5.74339,200
2008-12-09$5.90$5.90554,500
2008-12-08$6.11$6.11581,900
2008-12-05$5.86$5.86547,400
2008-12-04$5.05$5.05472,500
2008-12-03$5.09$5.09479,200
2008-12-02$4.69$4.69314,200
2008-12-01$4.36$4.36566,300
2008-11-28$5.50$5.50152,100
2008-11-26$5.31$5.31507,400
2008-11-25$4.53$4.53454,800
2008-11-24$4.56$4.56497,200
2008-11-21$3.97$3.97578,600
2008-11-20$3.51$3.51913,200
2008-11-19$3.68$3.68795,100
2008-11-18$3.88$3.88642,600
2008-11-17$3.80$3.80373,200
2008-11-14$3.99$3.99424,400
2008-11-13$4.34$4.34539,600
2008-11-12$3.84$3.841,154,600
2008-11-11$4.13$4.13829,500
2008-11-10$4.44$4.44241,800
2008-11-07$4.47$4.47262,900
2008-11-06$4.42$4.42696,900
2008-11-05$4.71$4.71468,500
2008-11-04$4.93$4.93396,900
2008-11-03$4.54$4.54392,800
2008-10-31$4.78$4.78307,500
2008-10-30$4.47$4.47405,800
2008-10-29$4.17$4.171,790,600
2008-10-28$3.90$3.90578,100
2008-10-27$3.81$3.81275,200
2008-10-24$4.12$4.12657,500
2008-10-23$4.32$4.322,078,300
2008-10-22$4.62$4.62680,600
2008-10-21$5.01$5.01310,400
2008-10-20$5.33$5.33379,400
2008-10-17$5.29$5.29479,300
2008-10-16$5.52$5.52535,300
2008-10-15$5.35$5.35464,500
2008-10-14$5.68$5.68536,000
2008-10-13$6.05$6.05726,900
2008-10-10$4.88$4.883,091,700
2008-10-09$4.90$4.901,112,900
2008-10-08$5.53$5.531,558,400
2008-10-07$5.13$5.132,230,400
2008-10-06$5.74$5.741,086,100
2008-10-03$6.54$6.54558,100
2008-10-02$6.93$6.93492,700
2008-10-01$7.40$7.40557,100
2008-09-30$7.72$7.72510,000
2008-09-29$7.70$7.70607,400
2008-09-26$8.23$8.23429,600
2008-09-25$7.82$7.82586,900
2008-09-24$7.96$7.96412,600
2008-09-23$8.41$8.41729,000
2008-09-22$8.07$8.07327,000
2008-09-19$8.91$8.911,523,700
2008-09-18$8.80$8.801,475,200
2008-09-17$7.51$7.51735,000
2008-09-16$7.89$7.891,045,700
2008-09-15$7.09$7.09903,300
2008-09-12$7.17$7.171,067,700
2008-09-11$7.48$7.481,027,200
2008-09-10$7.54$7.541,549,800
2008-09-09$7.51$7.511,397,500
2008-09-08$7.95$7.951,072,300
2008-09-05$8.33$8.331,129,000
2008-09-04$8.34$8.341,071,700
2008-09-03$8.88$8.88666,300
2008-09-02$8.90$8.90583,200
2008-08-29$9.21$9.21784,000
2008-08-28$9.26$9.26553,500
2008-08-27$9.39$9.39581,800
2008-08-26$9.17$9.17362,300
2008-08-25$9.24$9.24191,200
2008-08-22$9.50$9.50338,900
2008-08-21$9.36$9.36330,900
2008-08-20$9.56$9.56580,800
2008-08-19$9.45$9.45564,800
2008-08-18$10.03$10.03591,200
2008-08-15$10.01$10.01715,800
2008-08-14$9.81$9.81951,900
2008-08-13$9.61$9.611,611,700
2008-08-12$10.09$10.091,556,500
2008-08-11$9.17$9.171,161,200
2008-08-08$8.50$8.5018,578,500
2008-08-07$11.22$11.222,750,700
2008-08-06$10.79$10.791,893,500
2008-08-05$10.35$10.35949,400
2008-08-04$10.58$10.58718,600
2008-08-01$10.70$10.701,742,000
2008-07-31$12.06$12.061,242,100
2008-07-30$12.58$12.58772,800
2008-07-29$12.18$12.18640,400
2008-07-28$11.78$11.78295,800
2008-07-25$12.27$12.27453,400
2008-07-24$12.04$12.04684,700
2008-07-23$12.20$12.201,183,100
2008-07-22$11.84$11.841,159,900
2008-07-21$10.95$10.95470,300
2008-07-18$10.79$10.79799,300
2008-07-17$10.90$10.90911,300
2008-07-16$10.95$10.95854,000
2008-07-15$11.17$11.172,007,100
2008-07-14$11.86$11.86315,100
2008-07-11$12.08$12.08842,800
2008-07-10$12.70$12.70747,100
2008-07-09$13.00$13.00731,700
2008-07-08$13.22$13.22701,100
2008-07-07$12.93$12.93686,400
2008-07-03$13.06$13.06435,600
2008-07-02$12.68$12.68944,000
2008-07-01$13.43$13.43565,800
2008-06-30$13.40$13.401,097,000
2008-06-27$13.93$13.931,202,100
2008-06-26$14.26$14.261,138,800
2008-06-25$15.12$15.12725,500
2008-06-24$14.32$14.32626,500
2008-06-23$14.25$14.25670,400
2008-06-20$14.33$14.331,014,800
2008-06-19$15.01$15.01667,300
2008-06-18$14.49$14.49800,900
2008-06-17$15.10$15.10722,500
2008-06-16$14.83$14.83360,900
2008-06-13$14.61$14.61601,600
2008-06-12$14.17$14.171,542,500
2008-06-11$13.60$13.60704,900
2008-06-10$14.32$14.321,161,900
2008-06-09$14.58$14.581,612,300
2008-06-06$14.61$14.611,398,700
2008-06-05$15.02$15.022,635,100
2008-06-04$13.85$13.856,321,600
2008-06-03$15.96$15.96834,300
2008-06-02$16.37$16.37775,500
2008-05-30$16.45$16.45614,100
2008-05-29$16.64$16.64560,400
2008-05-28$16.63$16.63595,600
2008-05-27$16.45$16.45788,000
2008-05-23$16.15$16.151,155,600
2008-05-22$16.06$16.061,173,900
2008-05-21$15.89$15.891,822,700
2008-05-20$16.33$16.331,109,000
2008-05-19$16.10$16.101,975,000
2008-05-16$16.99$16.991,151,400
2008-05-15$17.52$17.521,256,200
2008-05-14$16.64$16.641,485,500
2008-05-13$16.69$16.691,845,600
2008-05-12$16.86$16.865,947,300
2008-05-09$17.89$17.896,558,400
2008-05-08$22.68$22.681,526,500
2008-05-07$22.30$22.30626,600
2008-05-06$22.35$22.35806,200
2008-05-05$22.31$22.311,325,100
2008-05-02$21.73$21.73477,100
2008-05-01$21.69$21.69820,000
2008-04-30$21.01$21.01361,300
2008-04-29$21.38$21.38917,300
2008-04-28$20.09$20.09529,400
2008-04-25$19.70$19.70822,200
2008-04-24$19.34$19.34749,400
2008-04-23$19.91$19.91800,300
2008-04-22$19.59$19.59610,200
2008-04-21$19.69$19.69214,600
2008-04-18$19.45$19.45279,400
2008-04-17$19.02$19.02246,800
2008-04-16$19.63$19.63424,400
2008-04-15$18.57$18.57461,200
2008-04-14$18.36$18.36410,600
2008-04-11$18.73$18.73639,600
2008-04-10$19.95$19.95353,300
2008-04-09$19.75$19.75556,200
2008-04-08$20.48$20.48388,400
2008-04-07$21.39$21.39665,900
2008-04-04$21.25$21.25858,900
2008-04-03$20.00$20.00528,700
2008-04-02$19.05$19.05485,000
2008-04-01$19.43$19.43761,800
2008-03-31$18.31$18.31569,600
2008-03-28$18.22$18.22585,500
2008-03-27$18.37$18.37603,700
2008-03-26$19.26$19.26586,900
2008-03-25$19.53$19.53763,800
2008-03-24$20.20$20.20579,400
2008-03-20$19.19$19.191,417,800
2008-03-19$17.95$17.95829,700
2008-03-18$18.26$18.26792,800
2008-03-17$17.54$17.541,053,100
2008-03-14$18.00$18.00863,400
2008-03-13$18.47$18.471,019,200
2008-03-12$18.67$18.671,325,200
2008-03-11$18.01$18.011,255,800
2008-03-10$17.23$17.23823,900
2008-03-07$17.49$17.49781,600
2008-03-06$17.50$17.50912,700
2008-03-05$18.26$18.261,007,600
2008-03-04$18.96$18.961,457,100
2008-03-03$19.41$19.41626,400
2008-02-29$19.48$19.48765,200
2008-02-28$19.03$19.031,150,100
2008-02-27$20.00$20.001,941,400
2008-02-26$19.68$19.681,554,500
2008-02-25$18.79$18.791,167,800
2008-02-22$18.80$18.802,774,400
2008-02-21$18.80$18.80521,600
2008-02-20$18.74$18.74522,600
2008-02-19$18.60$18.60391,600
2008-02-15$18.43$18.43735,700
2008-02-14$18.46$18.46625,500
2008-02-13$18.20$18.20501,800
2008-02-12$17.39$17.39424,800
2008-02-11$17.58$17.58572,100
2008-02-08$17.84$17.84638,800
2008-02-07$17.90$17.901,976,700
2008-02-06$17.90$17.90784,300
2008-02-05$18.28$18.28732,900
2008-02-04$19.71$19.71665,300
2008-02-01$20.46$20.46596,000
2008-01-31$20.47$20.47884,700
2008-01-30$19.13$19.13903,200
2008-01-29$19.04$19.04696,900
2008-01-28$18.98$18.98683,800
2008-01-25$18.65$18.651,067,900
2008-01-24$18.99$18.991,264,200
2008-01-23$17.84$17.841,103,300
2008-01-22$17.28$17.282,015,100
2008-01-18$17.98$17.982,072,200
2008-01-17$19.71$19.711,363,200
2008-01-16$21.17$21.17899,500
2008-01-15$21.02$21.021,150,200
2008-01-14$21.46$21.46912,700
2008-01-11$20.25$20.251,122,800
2008-01-10$20.81$20.811,146,700
2008-01-09$20.55$20.551,651,500
2008-01-08$20.72$20.721,195,300
2008-01-07$21.98$21.981,034,200
2008-01-04$22.32$22.32739,800
2008-01-03$23.46$23.46913,000
2008-01-02$23.67$23.67495,500