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Cogent Communications Holdings, Inc. (CCOI)
NASDAQ: CCOI · Real-Time Price · USD
14.19
-0.42 (-2.87%)
At close: Jun 18, 2026, 4:00 PM EDT
14.45
+0.26 (1.83%)
After-hours: Jun 18, 2026, 7:36 PM EDT

CCOI Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Jun 18, 202615.0715.2414.1314.1914.19-2.87%1,913,418
Jun 17, 202615.9016.0714.5714.6114.61-8.97%1,118,884
Jun 16, 202616.4616.9716.0016.0516.05-2.43%927,924
Jun 15, 202616.0417.6516.0016.4516.453.72%1,238,758
Jun 12, 202615.0915.9114.6115.8615.866.16%1,119,343
Jun 11, 202614.4615.0914.4114.9414.943.32%966,838
Jun 10, 202615.7516.0514.4314.4614.46-8.54%1,076,323
Jun 9, 202616.8617.3415.7915.8115.81-5.78%624,960
Jun 8, 202617.0817.9516.7416.7816.78-0.30%994,599
Jun 5, 202617.4417.7416.3016.8316.83-2.66%763,597
Jun 4, 202616.6117.4316.6117.2917.295.49%581,729
Jun 3, 202617.4317.4916.2816.3916.39-5.80%1,090,210
Jun 2, 202617.5517.6017.0817.4017.40-1.64%768,509
Jun 1, 202617.2618.0617.0017.6917.69-0.39%1,100,455
May 29, 202619.0219.2617.1817.7617.76-10.39%2,002,207
May 28, 202621.5321.7019.8019.8219.82-8.33%1,419,220
May 27, 202619.9621.7219.4921.6221.628.32%1,135,400
May 26, 202620.1520.7018.9419.9619.969.91%2,447,928
May 22, 202618.4118.6917.6818.1618.16-1.14%595,389
May 21, 202617.5018.5817.3018.3718.373.38%909,465
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