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Cogent Communications Holdings, Inc. (CCOI)
NASDAQ: CCOI · Real-Time Price · USD
17.76
-2.06 (-10.39%)
At close: May 29, 2026, 4:00 PM EDT
17.99
+0.23 (1.30%)
After-hours: May 29, 2026, 7:16 PM EDT

CCOI Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
May 29, 202619.0219.2617.1817.7617.76-10.39%1,989,392
May 28, 202621.5321.7019.8019.8219.82-8.33%1,411,626
May 27, 202619.9621.7219.4921.6221.628.32%1,134,993
May 26, 202620.1520.7018.9419.9619.969.91%2,438,752
May 22, 202618.4118.6917.6818.1618.16-1.14%592,791
May 21, 202617.5018.5817.3018.3718.373.38%908,788
May 20, 202617.5918.2616.7617.7717.770.51%972,803
May 19, 202617.0117.9416.7017.6817.682.67%1,033,637
May 18, 202616.8617.9016.7117.2217.224.62%1,221,645
May 15, 202615.9516.5015.5216.4816.462.30%1,006,517
May 14, 202615.9716.8115.7216.1116.092.16%812,712
May 13, 202615.9616.4815.5215.7715.75-2.11%916,363
May 12, 202616.4316.5315.9616.1116.09-1.77%894,406
May 11, 202616.7017.2516.2716.4016.38-1.50%1,072,657
May 8, 202616.3917.4716.0816.6516.632.02%1,184,473
May 7, 202616.5217.1716.1216.3216.30-1.66%1,370,618
May 6, 202618.3018.6216.2016.6016.57-8.11%1,941,221
May 5, 202616.6118.6516.1018.0618.0410.32%4,009,363
May 4, 202616.4917.8914.8216.3716.35-29.32%7,556,381
May 1, 202622.9524.2322.9023.1623.132.25%1,461,514
Apr 30, 202623.3223.7621.9822.6522.62-3.45%1,739,301
Apr 29, 202623.9523.9623.2023.4623.43-3.10%608,269
Apr 28, 202624.5324.8323.8924.2124.18-1.90%477,691
Apr 27, 202624.6025.2124.2424.6824.650.86%634,058
Apr 24, 202623.9324.7223.4724.4724.442.09%537,447
Apr 23, 202623.3224.2122.9723.9723.942.70%799,552
Apr 22, 202623.7024.0422.7323.3423.31-0.68%757,028
Apr 21, 202624.4324.4923.3923.5023.47-3.65%841,030
Apr 20, 202623.4724.7623.2124.3924.363.22%1,183,147
Apr 17, 202623.5623.8523.0623.6323.601.63%805,799
Apr 16, 202623.5324.0022.3923.2523.22-1.19%910,155
Apr 15, 202622.7824.3122.4823.5323.504.39%922,144
Apr 14, 202621.6323.0620.9522.5422.515.43%1,085,583
Apr 13, 202620.2721.9619.7921.3821.355.27%1,038,594
Apr 10, 202620.7321.1520.1920.3120.29-0.64%632,811
Apr 9, 202619.6420.5119.4920.4420.423.65%851,630
Apr 8, 202621.0521.3519.5019.7219.70-2.18%937,683
Apr 7, 202619.2020.4218.8220.1620.144.89%956,189
Apr 6, 202619.0219.4718.8619.2219.201.16%716,007
Apr 2, 202618.0419.0317.7919.0018.983.77%775,106
Apr 1, 202619.0519.2818.1918.3118.29-2.81%781,498
Mar 31, 202617.7918.9017.3518.8418.827.90%1,656,159
Mar 30, 202617.7418.1317.2717.4617.44-0.91%804,097
Mar 27, 202617.7217.9117.2217.6217.60-1.67%905,134
Mar 26, 202618.0718.5917.5817.9217.90-2.29%922,519
Mar 25, 202618.4518.7818.1018.3418.320.38%764,292
Mar 24, 202618.6319.2718.0418.2718.25-3.08%735,501
Mar 23, 202618.4319.4418.1018.8518.834.43%1,489,962
Mar 20, 202620.0320.0318.0218.0518.03-9.84%4,006,717
Mar 19, 202619.0020.0618.7020.0220.003.57%851,053