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Cogent Communications Holdings, Inc. (CCOI)
NASDAQ: CCOI · Real-Time Price · USD
17.62
-0.30 (-1.67%)
At close: Mar 27, 2026, 4:00 PM EDT
17.39
-0.23 (-1.30%)
After-hours: Mar 27, 2026, 5:52 PM EDT

CCOI Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Mar 27, 202617.7217.9117.2217.6217.62-1.67%899,063
Mar 26, 202618.0718.5917.5817.9217.92-2.29%921,059
Mar 25, 202618.4518.7818.1018.3418.340.38%764,292
Mar 24, 202618.6319.2718.0418.2718.27-3.08%735,501
Mar 23, 202618.4319.4418.1018.8518.854.43%1,489,962
Mar 20, 202620.0320.0318.0218.0518.05-9.84%4,006,717
Mar 19, 202619.0020.0618.7020.0220.023.57%851,053
Mar 18, 202620.2220.2419.2819.3319.33-4.92%807,923
Mar 17, 202619.5421.2319.3420.3320.335.17%949,210
Mar 16, 202618.8219.7818.5119.3319.332.82%872,061
Mar 13, 202619.7820.2518.6218.8018.80-4.23%1,046,831
Mar 12, 202620.9721.1819.5019.6319.63-8.01%1,010,521
Mar 11, 202622.2422.5021.1221.3421.34-3.04%735,991
Mar 10, 202621.8522.2421.3322.0122.01-2.18%1,106,266
Mar 9, 202622.7722.9821.5822.5022.50-2.47%1,002,229
Mar 6, 202622.4323.5021.9123.0723.071.32%932,408
Mar 5, 202622.6323.5022.1822.7722.75-1.39%1,424,640
Mar 4, 202622.0023.3421.4523.0923.076.75%1,286,485
Mar 3, 202621.6821.9920.5021.6321.61-2.52%1,189,960
Mar 2, 202618.2422.3818.1622.1922.1718.28%2,104,036
Feb 27, 202618.6018.7817.9918.7618.741.13%904,006
Feb 26, 202618.6719.1918.2618.5518.530.32%958,175
Feb 25, 202618.8518.9818.0318.4918.47-2.38%994,844
Feb 24, 202618.2418.9617.6818.9418.925.99%1,605,656
Feb 23, 202618.1818.8116.4117.8717.85-3.85%3,466,372
Feb 20, 202622.3022.3917.4218.5918.57-29.36%7,029,855
Feb 19, 202627.7527.8825.5126.3126.29-4.88%2,298,091
Feb 18, 202626.3328.7125.7827.6627.643.25%1,570,787
Feb 17, 202626.6127.1826.3126.7926.771.25%1,268,726
Feb 13, 202626.3526.7825.6326.4626.440.61%568,075
Feb 12, 202626.8427.3425.5926.3026.28-0.79%906,579
Feb 11, 202626.5526.5625.6026.5126.490.57%798,542
Feb 10, 202625.2926.5924.8026.3626.345.15%1,240,227
Feb 9, 202624.3025.6623.6225.0725.053.21%882,067
Feb 6, 202622.9224.5022.6824.2924.277.72%1,088,624
Feb 5, 202624.2524.2822.3122.5522.53-6.47%1,248,761
Feb 4, 202624.3124.6023.3424.1124.09-0.58%910,144
Feb 3, 202624.7325.3323.7824.2524.23-1.86%1,102,972
Feb 2, 202623.8825.5523.8424.7124.691.69%1,085,378
Jan 30, 202624.2224.6023.6724.3024.281.08%838,686
Jan 29, 202623.4124.8123.0924.0424.022.78%791,203
Jan 28, 202624.1924.6423.2723.3923.37-2.01%513,840
Jan 27, 202624.0224.0223.4523.8723.85-0.60%438,546
Jan 26, 202624.2924.3523.6224.0223.99-1.13%450,423
Jan 23, 202624.5524.8424.2124.2924.27-1.70%451,457
Jan 22, 202623.9125.0523.7924.7124.694.17%646,744
Jan 21, 202623.0423.9822.8823.7223.702.60%715,829
Jan 20, 202623.2124.0122.7923.1223.10-3.06%929,536
Jan 16, 202623.0123.8822.7823.8523.832.76%956,067
Jan 15, 202623.4823.8022.8423.2123.19-0.98%679,544