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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$73.18$105.42148,400——
2021-12-30$73.60$106.02101,800——
2021-12-29$73.57$105.98120,100——
2021-12-28$73.12$105.33136,100——
2021-12-27$73.29$105.57348,800——
2021-12-23$73.56$105.96179,800——
2021-12-22$73.52$105.91279,200——
2021-12-21$74.92$107.92348,900——
2021-12-20$71.76$103.37399,400——
2021-12-17$71.72$103.311,220,300——
2021-12-16$72.11$103.87933,300——
2021-12-15$75.97$109.43855,800——
2021-12-14$77.05$110.99646,300——
2021-12-13$78.21$112.66314,700——
2021-12-10$75.92$109.36326,700——
2021-12-09$75.23$108.37181,700——
2021-12-08$76.59$110.33358,400——
2021-12-07$77.86$112.16459,700——
2021-12-06$77.08$111.03657,400——
2021-12-03$74.22$106.91191,500——
2021-12-02$75.34$108.53553,500——
2021-12-01$72.87$104.97428,800——
2021-11-30$74.93$107.94367,200——
2021-11-29$76.47$110.15433,700——
2021-11-26$76.25$109.84213,800——
2021-11-24$78.49$113.06151,100——
2021-11-23$77.56$111.72200,300——
2021-11-22$77.86$112.16179,000——
2021-11-19$77.77$112.03167,700——
2021-11-18$79.40$114.38261,000——
2021-11-17$78.98$112.57275,300——
2021-11-16$80.27$114.41222,600——
2021-11-15$78.59$112.02186,300——
2021-11-12$77.73$110.79115,000——
2021-11-11$77.33$110.22103,600——
2021-11-10$76.22$108.64105,600——
2021-11-09$76.30$108.75221,700——
2021-11-08$75.18$107.16209,000——
2021-11-05$75.41$107.49200,700——
2021-11-04$77.33$110.22270,600——
2021-11-03$76.91$109.62185,400——
2021-11-02$76.65$109.25123,800——
2021-11-01$77.27$110.14153,100——
2021-10-29$76.59$109.17213,900——
2021-10-28$75.95$108.26128,600——
2021-10-27$74.54$106.25132,900——
2021-10-26$75.23$107.23129,400——
2021-10-25$74.07$105.58108,700——
2021-10-22$74.25$105.83107,800——
2021-10-21$73.52$104.79132,300——
2021-10-20$72.79$103.75122,400——
2021-10-19$72.99$104.04100,700——
2021-10-18$73.55$104.84110,900——
2021-10-15$73.19$104.32204,600——
2021-10-14$73.94$105.39107,500——
2021-10-13$72.93$103.95128,600——
2021-10-12$73.47$104.72122,300——
2021-10-11$72.11$102.78100,900——
2021-10-08$72.24$102.9790,400——
2021-10-07$73.39$104.61210,600——
2021-10-06$72.65$103.55266,500——
2021-10-05$72.48$103.31218,800——
2021-10-04$72.91$103.92290,800——
2021-10-01$72.16$102.85235,500——
2021-09-30$70.84$100.97173,200——
2021-09-29$71.44$101.83125,300——
2021-09-28$70.38$100.32183,600——
2021-09-27$72.49$103.32158,600——
2021-09-24$72.46$103.2893,300——
2021-09-23$72.73$103.67166,300——
2021-09-22$71.70$102.20117,100——
2021-09-21$71.02$101.23181,400——
2021-09-20$71.98$102.60165,900——
2021-09-17$73.17$104.291,033,500——
2021-09-16$71.51$101.93173,000——
2021-09-15$73.12$104.22154,700——
2021-09-14$72.68$103.59138,300——
2021-09-13$72.63$103.52113,900——
2021-09-10$71.95$102.55145,400——
2021-09-09$73.13$104.24137,500——
2021-09-08$74.61$106.35147,200——
2021-09-07$74.95$106.83159,100——
2021-09-03$74.81$106.63172,300——
2021-09-02$75.41$107.49153,200——
2021-09-01$74.80$106.62166,300——
2021-08-31$72.58$103.45283,500——
2021-08-30$73.15$104.26276,800——
2021-08-27$71.93$102.53231,600——
2021-08-26$71.88$102.45167,100——
2021-08-25$71.88$102.45171,800——
2021-08-24$71.44$101.83276,700——
2021-08-23$71.64$102.11138,100——
2021-08-20$71.58$102.03130,600——
2021-08-19$70.69$100.76180,800——
2021-08-18$71.98$101.45217,700——
2021-08-17$72.57$102.28196,200——
2021-08-16$72.97$102.85121,200——
2021-08-13$72.67$102.42210,700——
2021-08-12$72.60$102.32318,400——
2021-08-11$73.86$104.10242,500——
2021-08-10$76.60$107.96233,600——
2021-08-09$77.29$108.93357,800——
2021-08-06$77.96$109.88350,600——
2021-08-05$75.49$106.40524,300——
2021-08-04$74.56$105.09201,700——
2021-08-03$77.82$109.68248,800——
2021-08-02$77.28$108.92132,600——
2021-07-30$77.61$109.38148,400——
2021-07-29$76.31$107.55164,600——
2021-07-28$77.59$109.36123,500——
2021-07-27$76.30$107.54138,500——
2021-07-26$76.39$107.6795,600——
2021-07-23$77.06$108.61157,400——
2021-07-22$75.26$106.07149,300——
2021-07-21$76.12$107.28162,400——
2021-07-20$77.16$108.75230,400——
2021-07-19$76.81$108.26166,100——
2021-07-16$77.01$108.54157,400——
2021-07-15$77.37$109.05149,300——
2021-07-14$77.64$109.43132,100——
2021-07-13$77.35$109.02198,300——
2021-07-12$77.63$109.41181,300——
2021-07-09$75.98$107.0988,800——
2021-07-08$75.52$106.44157,700——
2021-07-07$75.55$106.48173,200——
2021-07-06$75.91$106.99158,900——
2021-07-02$75.85$106.90185,000——
2021-07-01$76.81$108.26131,600——
2021-06-30$76.89$108.37187,600——
2021-06-29$76.97$108.48149,400——
2021-06-28$77.29$108.93167,700——
2021-06-25$77.98$109.91472,000——
2021-06-24$77.24$108.86142,400——
2021-06-23$78.33$110.40272,400——
2021-06-22$79.21$111.64211,500——
2021-06-21$78.76$111.01240,400——
2021-06-18$77.45$109.16511,800——
2021-06-17$77.61$109.38178,900——
2021-06-16$77.73$109.55150,300——
2021-06-15$78.00$109.93142,000——
2021-06-14$78.37$110.46186,400——
2021-06-11$76.72$108.13129,100——
2021-06-10$76.78$108.21139,500——
2021-06-09$75.96$107.06134,800——
2021-06-08$75.61$106.57207,600——
2021-06-07$76.61$107.98261,300——
2021-06-04$75.48$106.38152,700——
2021-06-03$75.45$106.34218,300——
2021-06-02$75.75$106.76191,400——
2021-06-01$74.81$105.44216,500——
2021-05-28$75.60$106.55207,200——
2021-05-27$74.63$105.18363,600——
2021-05-26$74.21$104.59266,400——
2021-05-25$74.72$105.31376,800——
2021-05-24$74.85$105.49477,000——
2021-05-21$73.94$104.21342,200——
2021-05-20$74.56$105.09409,700——
2021-05-19$74.18$104.55385,000——
2021-05-18$74.79$105.41294,800——
2021-05-17$75.41$106.28262,000——
2021-05-14$77.14$108.72147,100——
2021-05-13$76.83$108.29268,900——
2021-05-12$75.86$105.82310,900——
2021-05-11$76.87$107.23402,900——
2021-05-10$79.18$110.45281,500——
2021-05-07$78.00$108.80188,300——
2021-05-06$78.76$109.86259,200——
2021-05-05$77.63$108.29335,900——
2021-05-04$78.21$109.10520,300——
2021-05-03$76.09$106.14483,800——
2021-04-30$75.51$105.33529,100——
2021-04-29$72.74$101.47511,300——
2021-04-28$68.56$95.64256,200——
2021-04-27$69.05$96.32193,200——
2021-04-26$68.73$95.87150,500——
2021-04-23$68.41$95.43189,900——
2021-04-22$67.48$94.13271,600——
2021-04-21$68.96$96.19308,900——
2021-04-20$68.33$95.32224,100——
2021-04-19$68.96$96.19279,600——
2021-04-16$69.07$96.35298,500——
2021-04-15$68.98$96.22280,500——
2021-04-14$68.69$95.82168,300——
2021-04-13$69.44$96.86217,400——
2021-04-12$69.78$97.34173,000——
2021-04-09$70.48$98.31209,400——
2021-04-08$69.53$96.99226,300——
2021-04-07$69.55$97.02214,500——
2021-04-06$70.43$98.24211,900——
2021-04-05$69.89$97.49285,300——
2021-04-01$68.41$95.43321,700——
2021-03-31$68.76$95.91374,800——
2021-03-30$67.38$93.99349,200——
2021-03-29$68.06$94.94686,000——
2021-03-26$68.09$94.98644,500——
2021-03-25$64.48$89.94383,200——
2021-03-24$63.72$88.88300,400——
2021-03-23$65.12$90.84243,200——
2021-03-22$65.12$90.84254,500——
2021-03-19$64.40$89.83733,500——
2021-03-18$63.53$88.62199,300——
2021-03-17$63.49$88.56276,800——
2021-03-16$62.20$86.76237,700——
2021-03-15$63.65$88.79228,000——
2021-03-12$64.43$89.87339,900——
2021-03-11$61.98$86.46314,400——
2021-03-10$61.84$85.21257,700——
2021-03-09$60.64$83.56273,500——
2021-03-08$59.99$82.66373,200——
2021-03-05$58.37$80.43475,400——
2021-03-04$57.53$79.27410,800——
2021-03-03$57.61$79.38341,900——
2021-03-02$58.54$80.66336,100——
2021-03-01$60.32$83.11541,900——
2021-02-26$59.85$82.47614,300——
2021-02-25$59.47$81.94977,600——
2021-02-24$62.19$85.69615,600——
2021-02-23$58.75$80.95340,600——
2021-02-22$58.62$80.77285,000——
2021-02-19$59.51$82.00356,100——
2021-02-18$59.97$82.63294,400——
2021-02-17$60.77$83.73345,500——
2021-02-16$59.98$82.65286,800——
2021-02-12$62.47$86.08152,000——
2021-02-11$62.67$86.35258,800——
2021-02-10$62.23$85.75296,500——
2021-02-09$61.94$85.35179,200——
2021-02-08$61.54$84.80179,100——
2021-02-05$61.05$84.12149,600——
2021-02-04$60.62$83.53256,900——
2021-02-03$59.51$82.00328,200——
2021-02-02$58.90$81.16319,200——
2021-02-01$58.02$79.95282,400——
2021-01-29$56.95$78.47311,400——
2021-01-28$58.02$79.95401,900——
2021-01-27$58.94$81.21378,500——
2021-01-26$61.82$85.18242,200——
2021-01-25$61.84$85.21221,700——
2021-01-22$61.07$84.15277,600——
2021-01-21$59.52$82.01272,400——
2021-01-20$60.89$83.90255,400——
2021-01-19$60.04$82.73310,000——
2021-01-15$59.54$82.04225,900——
2021-01-14$60.35$83.16220,900——
2021-01-13$59.48$81.96174,700——
2021-01-12$59.91$82.55425,800——
2021-01-11$58.73$80.92306,200——
2021-01-08$59.36$81.79274,700——
2021-01-07$59.96$82.62209,000——
2021-01-06$60.17$82.91479,900——
2021-01-05$57.27$78.91273,100——
2021-01-04$59.57$82.08565,900——