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 — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$45.21$57.34195,100
2018-12-28$45.32$57.48595,200
2018-12-27$45.16$57.27248,700
2018-12-26$44.96$57.02315,400
2018-12-24$42.40$53.77196,900
2018-12-21$43.71$55.43985,900
2018-12-20$45.39$57.57430,800
2018-12-19$45.26$57.40300,400
2018-12-18$45.61$57.84470,000
2018-12-17$45.38$57.55244,900
2018-12-14$46.76$59.30172,700
2018-12-13$47.35$60.05237,800
2018-12-12$48.50$61.51285,400
2018-12-11$49.07$62.23298,000
2018-12-10$47.33$60.03315,500
2018-12-07$47.59$60.36229,100
2018-12-06$48.82$61.92279,600
2018-12-04$47.37$60.08331,200
2018-12-03$49.88$63.26386,900
2018-11-30$48.49$61.50516,100
2018-11-29$48.92$62.04373,200
2018-11-28$49.15$62.33323,200
2018-11-27$48.73$61.80216,700
2018-11-26$48.55$61.57244,100
2018-11-23$48.74$61.8189,900
2018-11-21$47.94$60.80301,200
2018-11-20$47.03$59.65313,100
2018-11-19$48.53$61.55220,600
2018-11-16$50.05$63.48359,400
2018-11-15$48.66$61.71210,700
2018-11-14$49.30$61.81284,300
2018-11-13$48.86$61.26229,900
2018-11-12$49.02$61.46306,000
2018-11-09$50.05$62.75273,100
2018-11-08$51.25$64.26288,900
2018-11-07$51.71$64.84330,700
2018-11-06$51.14$64.12278,300
2018-11-05$50.76$63.64766,100
2018-11-02$49.98$62.67374,700
2018-11-01$49.59$62.18747,300
2018-10-31$51.98$65.17353,700
2018-10-30$52.08$65.30235,400
2018-10-29$51.23$64.23224,600
2018-10-26$50.65$63.51340,700
2018-10-25$51.78$64.92332,000
2018-10-24$51.11$64.08385,200
2018-10-23$51.98$65.17269,400
2018-10-22$52.57$65.91285,900
2018-10-19$52.32$65.60225,500
2018-10-18$51.69$64.81242,600
2018-10-17$51.99$65.19251,400
2018-10-16$51.17$64.16180,300
2018-10-15$49.96$62.64387,800
2018-10-12$48.71$61.07291,700
2018-10-11$48.83$61.22449,700
2018-10-10$50.48$63.29368,900
2018-10-09$51.59$64.69333,400
2018-10-08$52.61$65.96623,900
2018-10-05$55.03$69.00387,700
2018-10-04$55.45$69.52258,200
2018-10-03$56.03$70.25366,900
2018-10-02$55.76$69.91373,600
2018-10-01$55.39$69.45253,300
2018-09-28$55.80$69.96320,600
2018-09-27$56.10$70.34153,400
2018-09-26$55.50$69.59244,200
2018-09-25$55.95$70.15206,500
2018-09-24$55.45$69.52147,800
2018-09-21$54.80$68.71486,800
2018-09-20$55.45$69.52168,900
2018-09-19$55.45$69.52173,500
2018-09-18$56.10$70.34287,700
2018-09-17$55.55$69.65409,300
2018-09-14$54.95$68.90205,700
2018-09-13$55.00$68.96177,600
2018-09-12$54.88$68.81173,800
2018-09-11$54.90$68.84184,200
2018-09-10$55.00$68.96150,300
2018-09-07$54.95$68.90198,700
2018-09-06$54.95$68.90220,900
2018-09-05$54.65$68.52137,300
2018-09-04$53.80$67.46311,300
2018-08-31$54.70$68.58236,800
2018-08-30$54.35$68.15202,400
2018-08-29$54.50$68.33252,000
2018-08-28$54.45$68.27151,300
2018-08-27$54.25$68.02219,000
2018-08-24$53.65$67.27165,900
2018-08-23$52.40$65.70109,400
2018-08-22$52.85$66.26150,600
2018-08-21$53.00$66.45175,300
2018-08-20$52.65$66.01118,300
2018-08-17$52.70$66.08190,300
2018-08-16$53.15$66.64203,000
2018-08-15$52.30$64.90273,400
2018-08-14$52.25$64.84154,800
2018-08-13$51.05$63.35187,200
2018-08-10$50.65$62.85238,400
2018-08-09$50.00$62.04169,200
2018-08-08$49.80$61.80193,200
2018-08-07$50.10$62.17255,100
2018-08-06$50.25$62.35337,700
2018-08-03$50.48$62.64138,400
2018-08-02$51.10$63.41322,600
2018-08-01$52.45$65.08491,400
2018-07-31$51.95$64.46302,600
2018-07-30$51.95$64.46269,000
2018-07-27$52.20$64.77160,800
2018-07-26$52.85$65.58272,300
2018-07-25$52.50$65.15184,600
2018-07-24$52.15$64.71193,000
2018-07-23$52.65$65.33174,500
2018-07-20$52.50$65.15133,600
2018-07-19$52.75$65.46213,800
2018-07-18$52.60$65.27228,300
2018-07-17$54.30$67.38153,500
2018-07-16$54.10$67.13153,700
2018-07-13$54.20$67.26179,300
2018-07-12$53.75$66.70210,700
2018-07-11$52.00$64.53382,100
2018-07-10$54.90$68.12221,400
2018-07-09$55.75$69.18258,300
2018-07-06$56.15$69.68180,600
2018-07-05$55.40$68.75190,000
2018-07-03$54.70$67.88109,200
2018-07-02$53.90$66.88370,200
2018-06-29$53.40$66.26210,900
2018-06-28$53.80$66.76239,600
2018-06-27$52.90$65.64219,300
2018-06-26$53.60$66.51205,000
2018-06-25$53.75$66.70168,500
2018-06-22$54.70$67.88345,100
2018-06-21$54.25$67.32183,100
2018-06-20$55.25$68.56262,200
2018-06-19$55.15$68.43281,200
2018-06-18$54.50$67.63267,200
2018-06-15$53.85$66.82459,500
2018-06-14$53.40$66.26211,200
2018-06-13$52.75$65.46308,000
2018-06-12$53.45$66.33266,900
2018-06-11$52.35$64.96247,100
2018-06-08$51.75$64.22198,100
2018-06-07$52.00$64.53315,800
2018-06-06$51.75$64.22223,400
2018-06-05$52.70$65.39272,900
2018-06-04$51.23$63.57322,300
2018-06-01$50.90$63.16333,300
2018-05-31$51.20$63.53253,300
2018-05-30$51.30$63.66209,800
2018-05-29$50.10$62.17292,200
2018-05-25$50.05$62.11146,000
2018-05-24$50.25$62.35198,000
2018-05-23$50.10$62.17187,700
2018-05-22$49.90$61.92266,000
2018-05-21$50.00$62.04172,800
2018-05-18$49.90$61.92225,800
2018-05-17$50.00$62.04243,200
2018-05-16$50.70$62.91415,900
2018-05-15$50.30$61.77418,000
2018-05-14$49.40$60.67276,000
2018-05-11$49.80$61.16421,000
2018-05-10$50.40$61.89249,700
2018-05-09$49.55$60.85181,600
2018-05-08$49.20$60.42217,300
2018-05-07$48.90$60.05284,400
2018-05-04$48.20$59.19332,300
2018-05-03$49.10$60.30441,200
2018-05-02$48.65$59.74558,000
2018-05-01$47.85$58.76455,200
2018-04-30$47.15$57.90256,700
2018-04-27$47.75$58.64249,800
2018-04-26$47.50$58.33338,100
2018-04-25$47.40$58.21325,100
2018-04-24$47.35$58.15237,900
2018-04-23$47.40$58.21163,400
2018-04-20$47.30$58.09306,700
2018-04-19$47.80$58.70218,900
2018-04-18$48.70$59.81436,000
2018-04-17$47.40$58.21326,500
2018-04-16$46.70$57.35186,000
2018-04-13$45.55$55.94119,000
2018-04-12$45.60$56.00191,900
2018-04-11$45.75$56.18206,700
2018-04-10$44.95$55.20206,400
2018-04-09$44.80$55.02184,000
2018-04-06$44.20$54.28383,900
2018-04-05$45.35$55.69198,500
2018-04-04$44.45$54.59227,000
2018-04-03$42.75$52.50238,200
2018-04-02$42.70$52.44193,800
2018-03-29$43.40$53.30275,700
2018-03-28$42.45$52.13199,600
2018-03-27$42.25$51.89228,100
2018-03-26$42.45$52.13247,100
2018-03-23$41.65$51.15267,500
2018-03-22$42.60$52.32181,200
2018-03-21$43.30$53.17156,900
2018-03-20$43.15$52.99245,000
2018-03-19$42.80$52.56212,200
2018-03-16$43.80$53.79661,000
2018-03-15$43.50$53.42160,200
2018-03-14$43.70$53.67233,200
2018-03-13$43.75$53.73276,500
2018-03-12$45.75$56.18235,400
2018-03-09$45.05$55.32306,200
2018-03-08$43.50$53.42285,600
2018-03-07$43.95$53.36324,700
2018-03-06$43.15$52.39541,100
2018-03-05$43.50$52.81281,900
2018-03-02$43.00$52.21385,600
2018-03-01$42.85$52.02352,200
2018-02-28$42.85$52.02370,800
2018-02-27$43.50$52.81341,100
2018-02-26$44.20$53.66195,500
2018-02-23$44.10$53.54472,100
2018-02-22$43.10$52.33984,900
2018-02-21$44.95$54.57558,300
2018-02-20$44.70$54.27188,900
2018-02-16$44.10$53.54427,500
2018-02-15$44.25$53.72159,500
2018-02-14$43.55$52.87237,700
2018-02-13$42.90$52.08253,000
2018-02-12$42.80$51.96273,600
2018-02-09$41.70$50.63356,200
2018-02-08$42.00$50.99378,400
2018-02-07$42.60$51.72234,400
2018-02-06$42.55$51.66272,100
2018-02-05$42.45$51.54376,600
2018-02-02$43.55$52.87540,900
2018-02-01$44.85$54.45261,400
2018-01-31$45.10$54.76251,700
2018-01-30$44.75$54.33240,100
2018-01-29$44.35$53.84253,300
2018-01-26$44.75$54.33332,300
2018-01-25$45.00$54.63232,700
2018-01-24$45.35$55.06147,800
2018-01-23$45.40$55.12124,300
2018-01-22$45.35$55.06229,000
2018-01-19$44.50$54.03286,300
2018-01-18$44.20$53.66216,400
2018-01-17$45.40$55.12174,800
2018-01-16$44.45$53.97187,400
2018-01-12$45.30$55.00161,800
2018-01-11$45.00$54.63128,500
2018-01-10$44.30$53.78202,100
2018-01-09$45.10$54.76159,200
2018-01-08$45.45$55.18251,800
2018-01-05$44.80$54.39284,700
2018-01-04$44.80$54.39261,500
2018-01-03$44.70$54.27196,800
2018-01-02$44.65$54.21419,700