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 — 2003

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2003-12-31$23.40$23.401,525
2003-12-30$22.40$22.401,225
2003-12-29$23.80$23.80360
2003-12-26$22.40$22.40180
2003-12-24$21.60$21.601,225
2003-12-23$22.40$22.40715
2003-12-22$23.00$23.0060
2003-12-19$21.60$21.60160
2003-12-18$22.00$22.00685
2003-12-17$23.00$23.00365
2003-12-16$22.80$22.801,850
2003-12-15$24.40$24.402,920
2003-12-12$24.80$24.80840
2003-12-11$26.00$26.00100
2003-12-10$24.80$24.80405
2003-12-09$25.00$25.001,765
2003-12-08$24.00$24.00455
2003-12-05$25.00$25.001,030
2003-12-04$24.60$24.60625
2003-12-03$23.20$23.20390
2003-12-02$25.00$25.00545
2003-12-01$25.20$25.20420
2003-11-28$24.40$24.40140
2003-11-26$24.40$24.40495
2003-11-25$23.20$23.201,550
2003-11-24$25.80$25.80530
2003-11-21$25.00$25.00620
2003-11-20$24.60$24.602,905
2003-11-19$23.00$23.002,695
2003-11-18$25.00$25.00405
2003-11-17$27.40$27.402,050
2003-11-14$35.00$35.001,270
2003-11-13$35.60$35.60915
2003-11-12$34.20$34.203,280
2003-11-11$38.00$38.003,815
2003-11-10$32.00$32.004,675
2003-11-07$26.00$26.002,855
2003-11-06$25.00$25.00505
2003-11-05$24.00$24.001,860
2003-11-04$22.80$22.801,965
2003-11-03$20.40$20.40760
2003-10-31$22.00$22.00375
2003-10-30$21.00$21.00145
2003-10-29$21.80$21.80855
2003-10-28$20.60$20.60420
2003-10-27$22.40$22.40855
2003-10-24$22.00$22.0065
2003-10-23$22.00$22.00240
2003-10-22$22.00$22.00540
2003-10-21$22.00$22.00905
2003-10-20$20.00$20.001,020
2003-10-17$20.20$20.20630
2003-10-16$22.20$22.201,045
2003-10-15$22.40$22.402,000
2003-10-14$23.00$23.001,700
2003-10-13$23.00$23.001,405
2003-10-10$23.00$23.00105
2003-10-09$22.40$22.40265
2003-10-08$22.40$22.40190
2003-10-07$22.80$22.8055
2003-10-06$23.00$23.00900
2003-10-03$21.20$21.20525
2003-10-02$21.60$21.60185
2003-10-01$22.20$22.20135
2003-09-30$23.00$23.000
2003-09-29$23.00$23.0020
2003-09-26$22.80$22.80395
2003-09-25$24.00$24.00695
2003-09-24$25.00$25.00810
2003-09-23$26.60$26.60840
2003-09-22$24.00$24.00695
2003-09-19$23.00$23.00875
2003-09-18$21.00$21.001,360
2003-09-17$20.60$20.60580
2003-09-16$21.00$21.001,730
2003-09-15$20.20$20.20470
2003-09-12$18.20$18.20660
2003-09-11$20.20$20.20935
2003-09-10$20.40$20.40730
2003-09-09$20.80$20.80935
2003-09-08$21.00$21.001,285
2003-09-05$21.00$21.001,260
2003-09-04$21.80$21.80500
2003-09-03$21.20$21.201,645
2003-09-02$22.00$22.00350
2003-08-29$23.00$23.00445
2003-08-28$23.00$23.00125
2003-08-27$23.80$23.80710
2003-08-26$22.00$22.00275
2003-08-25$24.00$24.00505
2003-08-22$22.40$22.40480
2003-08-21$24.40$24.401,475
2003-08-20$21.80$21.8060
2003-08-19$21.60$21.60670
2003-08-18$26.00$26.001,335
2003-08-15$23.00$23.0035
2003-08-14$23.00$23.001,550
2003-08-13$21.00$21.001,580
2003-08-12$16.20$16.201,870
2003-08-11$19.60$19.601,655
2003-08-08$21.00$21.001,960
2003-08-07$22.00$22.001,090
2003-08-06$22.20$22.202,090
2003-08-05$27.00$27.001,710
2003-08-04$30.00$30.001,205
2003-08-01$33.00$33.001,655
2003-07-31$33.00$33.00825
2003-07-30$32.00$32.001,865
2003-07-29$35.60$35.60510
2003-07-28$37.80$37.80540
2003-07-25$40.40$40.40530
2003-07-24$37.80$37.80200
2003-07-23$39.00$39.001,305
2003-07-22$39.80$39.80515
2003-07-21$41.00$41.00205
2003-07-18$40.20$40.20440
2003-07-17$39.80$39.80345
2003-07-16$44.00$44.001,280
2003-07-15$44.80$44.802,700
2003-07-14$41.40$41.401,600
2003-07-11$44.40$44.401,880
2003-07-10$46.80$46.801,765
2003-07-09$44.20$44.201,830
2003-07-08$47.00$47.001,065
2003-07-07$45.00$45.00970
2003-07-03$46.40$46.40290
2003-07-02$46.00$46.001,875
2003-07-01$45.80$45.80595
2003-06-30$44.00$44.00610
2003-06-27$43.20$43.20505
2003-06-26$45.00$45.00585
2003-06-25$43.20$43.201,820
2003-06-24$45.60$45.601,835
2003-06-23$50.60$50.603,410
2003-06-20$45.00$45.007,430
2003-06-19$38.00$38.00980
2003-06-18$41.80$41.80690
2003-06-17$44.20$44.202,725
2003-06-16$44.00$44.002,725
2003-06-13$34.00$34.002,620
2003-06-12$36.40$36.405,430
2003-06-11$41.00$41.007,615
2003-06-10$43.00$43.0017,425
2003-06-09$47.00$47.009,730
2003-06-06$21.00$21.005,080
2003-06-05$17.60$17.604,230
2003-06-04$14.80$14.801,515
2003-06-03$15.00$15.001,335
2003-06-02$14.40$14.402,450
2003-05-30$14.00$14.002,500
2003-05-29$14.20$14.201,780
2003-05-28$14.00$14.003,985
2003-05-27$14.80$14.802,475
2003-05-23$10.00$10.00155
2003-05-22$10.00$10.00140
2003-05-21$8.60$8.60335
2003-05-20$9.80$9.80170
2003-05-19$10.20$10.201,440
2003-05-16$10.40$10.403,495
2003-05-15$9.00$9.001,960
2003-05-14$10.60$10.60365
2003-05-13$10.00$10.00510
2003-05-12$9.40$9.40480
2003-05-09$10.60$10.60310
2003-05-08$9.60$9.60345
2003-05-07$8.40$8.40125
2003-05-06$9.60$9.60305
2003-05-05$10.60$10.60265
2003-05-02$10.00$10.0010
2003-05-01$9.80$9.80490
2003-04-30$10.60$10.60785
2003-04-29$9.00$9.0030
2003-04-28$10.60$10.60130
2003-04-25$10.00$10.0050
2003-04-24$9.60$9.602,400
2003-04-23$8.00$8.0015
2003-04-22$9.60$9.60270
2003-04-21$9.60$9.60300
2003-04-17$8.00$8.00140
2003-04-16$8.40$8.4015
2003-04-15$8.40$8.40830
2003-04-14$8.40$8.40150
2003-04-11$10.40$10.4015
2003-04-10$10.20$10.20610
2003-04-09$9.00$9.00150
2003-04-08$9.00$9.0055
2003-04-07$10.00$10.0070
2003-04-04$10.00$10.00320
2003-04-03$8.00$8.0040
2003-04-02$8.00$8.000
2003-04-01$8.00$8.00400
2003-03-31$10.00$10.00150
2003-03-28$10.00$10.000
2003-03-27$10.00$10.00175
2003-03-26$8.20$8.205
2003-03-25$10.40$10.4050
2003-03-24$10.60$10.60195
2003-03-21$10.00$10.00400
2003-03-20$9.60$9.6055
2003-03-19$9.60$9.60230
2003-03-18$9.80$9.80105
2003-03-17$10.00$10.00130
2003-03-14$9.20$9.20440
2003-03-13$9.80$9.80250
2003-03-12$9.60$9.6055
2003-03-11$9.20$9.20320
2003-03-10$9.00$9.00155
2003-03-07$8.40$8.40240
2003-03-06$9.00$9.00360
2003-03-05$10.00$10.00155
2003-03-04$10.00$10.00905
2003-03-03$10.00$10.00280
2003-02-28$9.00$9.00950
2003-02-27$9.80$9.80685
2003-02-26$9.80$9.80600
2003-02-25$10.00$10.0015
2003-02-24$9.00$9.00790
2003-02-21$10.00$10.0065
2003-02-20$10.00$10.00265
2003-02-19$10.40$10.40445
2003-02-18$10.80$10.8010
2003-02-14$9.80$9.80465
2003-02-13$9.40$9.40280
2003-02-12$11.00$11.0010
2003-02-11$11.00$11.00550
2003-02-10$9.40$9.400
2003-02-07$9.40$9.405
2003-02-06$9.40$9.40260
2003-02-05$9.00$9.00615
2003-02-04$10.20$10.200
2003-02-03$10.20$10.205
2003-01-31$10.40$10.4025
2003-01-30$10.60$10.6065
2003-01-29$11.80$11.80205
2003-01-28$12.00$12.00260
2003-01-27$11.80$11.80230
2003-01-24$10.60$10.60155
2003-01-23$10.00$10.00405
2003-01-22$12.00$12.00680
2003-01-21$10.00$10.00105
2003-01-17$12.20$12.20530
2003-01-16$12.40$12.40505
2003-01-15$11.80$11.80620
2003-01-14$9.60$9.602,135
2003-01-13$11.00$11.002,680
2003-01-10$13.00$13.00315
2003-01-09$13.80$13.80440
2003-01-08$17.00$17.00365
2003-01-07$18.00$18.00930
2003-01-06$14.80$14.80955
2003-01-03$14.20$14.201,475
2003-01-02$11.40$11.40340