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 — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$21.56$39.461,526,400
2025-12-30$21.86$40.011,684,500
2025-12-29$21.95$40.17895,800
2025-12-26$22.56$41.29642,900
2025-12-24$22.25$40.72472,600
2025-12-23$21.90$40.081,425,400
2025-12-22$22.57$41.311,241,300
2025-12-19$21.78$39.863,379,500
2025-12-18$22.51$41.201,405,200
2025-12-17$22.68$41.512,118,400
2025-12-16$23.05$42.191,380,400
2025-12-15$22.84$41.801,445,600
2025-12-12$23.27$42.59931,700
2025-12-11$24.33$44.531,843,000
2025-12-10$23.82$43.601,988,200
2025-12-09$21.44$39.24978,700
2025-12-08$21.19$38.781,652,600
2025-12-05$19.62$35.911,725,700
2025-12-04$18.75$34.321,035,600
2025-12-03$19.59$35.85841,100
2025-12-02$19.99$36.591,224,300
2025-12-01$19.47$35.631,345,700
2025-11-28$19.08$34.92900,600
2025-11-26$19.00$34.771,970,600
2025-11-25$17.89$32.741,617,500
2025-11-24$17.16$31.411,626,300
2025-11-21$17.05$31.212,745,300
2025-11-20$16.68$30.492,536,700
2025-11-19$16.98$31.041,719,200
2025-11-18$19.81$36.212,523,700
2025-11-17$18.50$33.822,382,300
2025-11-14$17.55$32.082,807,600
2025-11-13$16.68$30.493,203,200
2025-11-12$18.49$33.803,686,100
2025-11-11$20.62$37.692,464,500
2025-11-10$22.12$40.442,784,200
2025-11-07$23.49$42.944,109,300
2025-11-06$24.95$45.615,599,500
2025-11-05$38.30$70.011,728,900
2025-11-04$39.96$73.05702,500
2025-11-03$40.77$74.53825,000
2025-10-31$41.25$75.41831,800
2025-10-30$40.21$73.511,120,400
2025-10-29$42.99$78.59709,500
2025-10-28$43.47$79.47634,100
2025-10-27$44.14$80.69827,500
2025-10-24$42.96$78.53745,300
2025-10-23$42.72$78.091,155,900
2025-10-22$43.11$78.81881,800
2025-10-21$44.15$80.711,408,600
2025-10-20$44.35$81.071,025,300
2025-10-17$43.45$79.431,541,100
2025-10-16$44.85$81.991,111,000
2025-10-15$45.10$82.44706,200
2025-10-14$44.01$80.45885,900
2025-10-13$43.60$79.70731,400
2025-10-10$42.05$76.87782,100
2025-10-09$43.66$79.81852,400
2025-10-08$42.58$77.841,136,900
2025-10-07$42.51$77.711,146,200
2025-10-06$42.80$78.241,375,000
2025-10-03$41.67$76.171,251,100
2025-10-02$40.39$73.831,378,400
2025-10-01$39.10$71.481,275,700
2025-09-30$38.35$70.11892,500
2025-09-29$38.20$69.831,146,300
2025-09-26$39.52$72.24906,500
2025-09-25$39.86$72.871,015,500
2025-09-24$40.67$74.35924,400
2025-09-23$40.44$73.931,860,600
2025-09-22$40.14$73.382,175,100
2025-09-19$36.62$66.943,175,100
2025-09-18$37.92$69.321,697,900
2025-09-17$37.65$68.831,231,600
2025-09-16$37.70$68.921,875,300
2025-09-15$37.34$68.261,624,900
2025-09-12$36.01$65.832,055,100
2025-09-11$35.96$65.741,701,000
2025-09-10$35.30$64.531,834,400
2025-09-09$36.30$66.361,826,400
2025-09-08$36.88$67.422,070,100
2025-09-05$36.88$67.422,154,300
2025-09-04$36.66$67.021,372,400
2025-09-03$36.13$66.051,090,400
2025-09-02$36.92$67.49930,500
2025-08-29$38.23$69.89927,800
2025-08-28$37.51$68.571,210,900
2025-08-27$37.79$69.081,194,700
2025-08-26$37.41$68.391,249,500
2025-08-25$38.30$70.011,091,200
2025-08-22$38.38$70.161,358,900
2025-08-21$37.52$68.592,213,400
2025-08-20$37.50$66.701,477,500
2025-08-19$37.75$67.142,288,600
2025-08-18$36.90$65.632,936,900
2025-08-15$34.25$60.921,246,300
2025-08-14$34.14$60.721,692,300
2025-08-13$34.83$61.951,970,100
2025-08-12$34.06$60.583,149,600
2025-08-11$32.36$57.554,896,100
2025-08-08$30.62$54.465,257,300
2025-08-07$35.34$62.854,730,400
2025-08-06$43.88$78.041,234,300
2025-08-05$45.70$81.28583,800
2025-08-04$45.28$80.53521,700
2025-08-01$45.14$80.28740,200
2025-07-31$45.59$81.08900,500
2025-07-30$46.97$83.54722,200
2025-07-29$46.85$83.33521,900
2025-07-28$47.49$84.46560,000
2025-07-25$48.83$86.85483,400
2025-07-24$48.87$86.92376,900
2025-07-23$50.29$89.44366,300
2025-07-22$49.39$87.84589,900
2025-07-21$47.92$85.231,158,700
2025-07-18$50.00$88.931,253,100
2025-07-17$52.91$94.10616,500
2025-07-16$52.29$93.00677,300
2025-07-15$50.25$89.37418,900
2025-07-14$50.45$89.73425,900
2025-07-11$49.40$87.86445,600
2025-07-10$50.52$89.85390,000
2025-07-09$49.28$87.65417,500
2025-07-08$49.92$88.79328,000
2025-07-07$49.23$87.56390,700
2025-07-03$50.33$89.52220,800
2025-07-02$50.59$89.98371,400
2025-07-01$50.23$89.34703,500
2025-06-30$48.21$85.74488,500
2025-06-27$48.20$85.73849,800
2025-06-26$48.16$85.66597,400
2025-06-25$48.15$85.64422,300
2025-06-24$49.08$87.29688,500
2025-06-23$49.28$87.65674,400
2025-06-20$47.45$84.392,071,200
2025-06-18$46.73$83.111,035,700
2025-06-17$47.15$83.86702,700
2025-06-16$46.91$83.43820,300
2025-06-13$46.98$83.56889,600
2025-06-12$48.00$85.37721,600
2025-06-11$48.19$85.71695,100
2025-06-10$48.63$86.49703,300
2025-06-09$48.96$87.08773,200
2025-06-06$47.84$85.09643,000
2025-06-05$47.41$84.32671,500
2025-06-04$47.59$84.64953,400
2025-06-03$47.48$84.45820,400
2025-06-02$46.12$82.03898,900
2025-05-30$45.71$81.30907,600
2025-05-29$47.50$84.48859,400
2025-05-28$46.76$83.17842,400
2025-05-27$49.19$87.491,325,700
2025-05-23$46.89$83.40887,600
2025-05-22$45.90$81.641,899,000
2025-05-21$46.05$80.111,303,500
2025-05-20$49.85$86.72627,300
2025-05-19$49.89$86.79557,300
2025-05-16$50.59$88.00810,100
2025-05-15$50.41$87.69533,400
2025-05-14$50.87$88.49838,400
2025-05-13$51.27$89.19833,000
2025-05-12$50.54$87.92709,000
2025-05-09$48.93$85.121,248,500
2025-05-08$49.30$85.762,108,800
2025-05-07$53.21$92.56766,800
2025-05-06$55.02$95.71459,700
2025-05-05$56.05$97.50580,800
2025-05-02$56.46$98.22582,900
2025-05-01$54.71$95.17528,900
2025-04-30$54.35$94.54603,600
2025-04-29$54.68$95.12382,900
2025-04-28$53.62$93.28294,700
2025-04-25$53.53$93.12411,400
2025-04-24$53.50$93.07312,800
2025-04-23$52.06$90.56513,500
2025-04-22$51.15$88.98507,800
2025-04-21$51.50$89.59455,700
2025-04-17$53.10$92.37440,300
2025-04-16$52.23$90.86391,400
2025-04-15$53.44$92.96423,300
2025-04-14$53.08$92.34869,000
2025-04-11$51.73$89.99744,200
2025-04-10$50.64$88.091,011,300
2025-04-09$53.83$93.642,196,900
2025-04-08$50.66$88.131,111,600
2025-04-07$53.30$92.721,455,400
2025-04-04$56.92$99.02819,000
2025-04-03$60.08$104.51528,600
2025-04-02$61.65$107.24404,300
2025-04-01$61.66$107.26399,800
2025-03-31$61.31$106.65622,400
2025-03-28$61.57$107.10403,300
2025-03-27$61.50$106.98769,900
2025-03-26$63.07$109.71572,500
2025-03-25$63.89$111.14720,600
2025-03-24$68.15$118.55335,800
2025-03-21$68.31$118.83836,000
2025-03-20$68.97$119.98253,800
2025-03-19$70.51$122.66278,800
2025-03-18$70.35$122.38249,000
2025-03-17$70.91$123.35413,300
2025-03-14$68.52$119.19310,300
2025-03-13$67.61$117.61280,900
2025-03-12$69.94$119.92422,200
2025-03-11$69.93$119.90328,000
2025-03-10$69.63$119.38453,100
2025-03-07$71.59$122.75395,600
2025-03-06$70.90$121.56442,100
2025-03-05$70.19$120.35511,100
2025-03-04$71.26$122.18584,200
2025-03-03$71.32$122.28710,100
2025-02-28$73.07$125.28728,200
2025-02-27$72.46$124.24973,100
2025-02-26$80.11$137.35389,700
2025-02-25$79.22$135.83320,000
2025-02-24$79.10$135.62328,300
2025-02-21$79.93$137.04300,500
2025-02-20$81.45$139.65239,900
2025-02-19$83.44$143.06249,100
2025-02-18$83.40$142.99245,100
2025-02-14$82.00$140.59161,800
2025-02-13$82.66$141.73157,200
2025-02-12$81.92$140.46278,000
2025-02-11$81.89$140.41276,400
2025-02-10$82.38$141.25334,500
2025-02-07$80.39$137.83381,700
2025-02-06$79.58$136.44226,100
2025-02-05$79.18$135.76271,400
2025-02-04$76.18$130.62327,500
2025-02-03$77.06$132.12369,300
2025-01-31$75.34$129.18309,500
2025-01-30$74.85$128.33210,300
2025-01-29$74.49$127.72239,500
2025-01-28$74.68$128.04246,200
2025-01-27$74.23$127.27385,200
2025-01-24$75.70$129.79306,300
2025-01-23$75.02$128.63301,200
2025-01-22$74.54$127.80340,500
2025-01-21$73.57$126.14350,200
2025-01-17$72.60$124.48217,000
2025-01-16$72.20$123.79359,200
2025-01-15$73.02$125.20367,800
2025-01-14$71.96$123.38324,600
2025-01-13$71.54$122.66288,900
2025-01-10$71.73$122.99478,800
2025-01-08$73.13$125.39434,200
2025-01-07$72.49$124.29482,900
2025-01-06$75.78$129.93527,400
2025-01-03$75.64$129.69402,800
2025-01-02$77.09$132.18525,300