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 — 2026

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$10.0878,577
2026-09-03$10.2360,509
2026-09-02$9.03174,154
2026-09-01$9.4279,824
2026-08-31$9.2969,047
2026-08-28$9.7734,765
2026-08-27$9.67$17.771,233,000$9.8353,634
2026-08-26$10.05$18.47954,600$10.0555,737
2026-08-25$9.88$18.161,423,200$9.5462,590
2026-08-24$9.49$17.442,501,500$9.08103,932
2026-08-21$9.17$16.851,858,000$10.1962,743
2026-08-20$10.01$18.361,620,800$10.1990,031
2026-08-19$10.37$19.022,375,600$9.7994,086
2026-08-18$10.13$18.581,764,000$10.76181,701
2026-08-17$10.75$19.721,286,500$11.0972,075
2026-08-14$11.31$20.742,261,900$10.2189,791
2026-08-13$10.35$18.982,205,300$10.01100,898
2026-08-12$10.25$18.801,509,900$11.1552,160
2026-08-11$10.82$19.841,729,800$10.2872,866
2026-08-10$10.30$18.892,527,500$10.04107,544
2026-08-07$9.92$18.194,212,900$10.90221,282
2026-08-06$10.91$20.013,293,700$13.36143,922
2026-08-05$12.87$23.601,462,500$13.0852,627
2026-08-04$13.30$24.391,083,900$13.3336,945
2026-08-03$13.23$24.261,415,500$13.5987,906
2026-07-31$13.50$24.76962,600$13.0158,955
2026-07-30$13.24$24.281,014,000$12.5658,794
2026-07-29$12.69$23.271,407,700$12.5359,620
2026-07-28$12.95$23.75998,300$12.3140,043
2026-07-27$12.22$22.41999,700$11.9870,383
2026-07-24$11.87$21.77951,000$12.9143,690
2026-07-23$12.90$23.66981,500$12.8045,942
2026-07-22$12.93$23.71835,500$13.0232,641
2026-07-21$12.70$23.291,099,700$12.6749,253
2026-07-20$12.40$22.741,525,900$11.0062,632
2026-07-17$10.97$20.121,549,100
2026-07-16$11.71$21.48926,900
2026-07-15$12.52$22.96796,300
2026-07-14$12.25$22.471,133,200
2026-07-13$12.93$23.711,172,800
2026-07-10$12.61$23.13795,100
2026-07-09$12.64$23.18931,000
2026-07-08$12.36$22.671,276,000
2026-07-07$11.66$21.391,343,000
2026-07-06$12.19$22.361,424,500
2026-07-02$12.99$23.822,188,900
2026-07-01$14.28$26.191,445,900
2026-06-30$13.88$25.462,193,600
2026-06-29$13.14$24.101,978,900
2026-06-26$13.41$24.592,535,600
2026-06-25$13.16$24.141,887,100
2026-06-24$13.52$24.801,455,500
2026-06-23$14.16$25.971,126,100
2026-06-22$14.66$26.891,911,300
2026-06-18$14.19$26.031,917,600
2026-06-17$14.61$26.801,120,700
2026-06-16$16.05$29.44927,600
2026-06-15$16.45$30.171,237,700
2026-06-12$15.86$29.091,119,100
2026-06-11$14.94$27.40966,800
2026-06-10$14.46$26.521,076,300
2026-06-09$15.81$29.00624,800
2026-06-08$16.78$30.78994,600
2026-06-05$16.83$30.87763,600
2026-06-04$17.29$31.71581,700
2026-06-03$16.39$30.061,090,200
2026-06-02$17.40$31.91768,400
2026-06-01$17.69$32.441,100,500
2026-05-29$17.76$32.572,002,100
2026-05-28$19.82$36.351,414,200
2026-05-27$21.62$39.651,135,400
2026-05-26$19.96$36.612,447,800
2026-05-22$18.16$33.31595,200
2026-05-21$18.37$33.69909,100
2026-05-20$17.77$32.59972,800
2026-05-19$17.68$32.431,033,300
2026-05-18$17.22$31.581,221,600
2026-05-15$16.48$30.191,006,500
2026-05-14$16.11$29.51812,700
2026-05-13$15.77$28.89916,300
2026-05-12$16.11$29.51894,400
2026-05-11$16.40$30.041,072,600
2026-05-08$16.65$30.501,184,500
2026-05-07$16.32$29.901,370,600
2026-05-06$16.60$30.411,941,200
2026-05-05$18.06$33.084,009,400
2026-05-04$16.37$29.997,556,400
2026-05-01$23.16$42.431,461,500
2026-04-30$22.65$41.491,739,300
2026-04-29$23.46$42.98608,300
2026-04-28$24.21$44.35477,700
2026-04-27$24.68$45.21634,000
2026-04-24$24.47$44.83537,000
2026-04-23$23.97$43.91799,600
2026-04-22$23.34$42.76757,000
2026-04-21$23.50$43.05841,000
2026-04-20$24.39$44.681,183,100
2026-04-17$23.63$43.29805,700
2026-04-16$23.25$42.59910,200
2026-04-15$23.53$43.10922,100
2026-04-14$22.54$41.291,085,600
2026-04-13$21.38$39.161,038,600
2026-04-10$20.31$37.20632,800
2026-04-09$20.44$37.44851,600
2026-04-08$19.72$36.12937,700
2026-04-07$20.16$36.93956,200
2026-04-06$19.22$35.21716,000
2026-04-02$19.00$34.81775,000
2026-04-01$18.31$33.54781,500
2026-03-31$18.84$34.511,656,100
2026-03-30$17.46$31.98804,100
2026-03-27$17.62$32.28905,100
2026-03-26$17.92$32.83922,500
2026-03-25$18.34$33.60764,300
2026-03-24$18.27$33.47735,500
2026-03-23$18.85$34.531,489,900
2026-03-20$18.05$33.064,006,700
2026-03-19$20.02$36.67851,100
2026-03-18$19.33$35.41807,900
2026-03-17$20.33$37.24949,200
2026-03-16$19.33$35.41872,100
2026-03-13$18.80$34.441,046,800
2026-03-12$19.63$35.961,010,300
2026-03-11$21.34$39.09736,000
2026-03-10$22.01$40.321,106,300
2026-03-09$22.50$41.221,001,900
2026-03-06$23.07$42.26932,400
2026-03-05$22.77$41.671,424,600
2026-03-04$23.09$42.261,286,500
2026-03-03$21.63$39.591,190,000
2026-03-02$22.19$40.612,103,600
2026-02-27$18.76$34.34904,000
2026-02-26$18.55$33.95958,000
2026-02-25$18.49$33.84994,600
2026-02-24$18.94$34.661,605,600
2026-02-23$17.87$32.713,466,400
2026-02-20$18.59$34.027,029,900
2026-02-19$26.31$48.152,298,100
2026-02-18$27.66$50.621,570,800
2026-02-17$26.79$49.031,268,700
2026-02-13$26.46$48.43568,100
2026-02-12$26.30$48.14906,600
2026-02-11$26.51$48.52798,500
2026-02-10$26.36$48.251,240,200
2026-02-09$25.07$45.88882,100
2026-02-06$24.29$44.461,088,600
2026-02-05$22.55$41.271,248,700
2026-02-04$24.11$44.13910,100
2026-02-03$24.25$44.381,103,000
2026-02-02$24.71$45.231,085,400
2026-01-30$24.30$44.47838,700
2026-01-29$24.04$44.00791,200
2026-01-28$23.39$42.81513,800
2026-01-27$23.87$43.69438,500
2026-01-26$24.02$43.96450,400
2026-01-23$24.29$44.46451,500
2026-01-22$24.71$45.23646,700
2026-01-21$23.72$43.41715,800
2026-01-20$23.12$42.32929,500
2026-01-16$23.85$43.65956,100
2026-01-15$23.21$42.48679,500
2026-01-14$23.44$42.90985,100
2026-01-13$22.76$41.66800,400
2026-01-12$23.28$42.61698,800
2026-01-09$22.94$41.99725,800
2026-01-08$22.32$40.851,083,500
2026-01-07$22.12$40.48961,700
2026-01-06$20.72$37.92892,400
2026-01-05$19.51$35.711,308,600
2026-01-02$20.62$37.741,021,200