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Arqit Quantum Inc. (ARQQ)
NASDAQ: ARQQ · Real-Time Price · USD
16.41
+0.60 (3.80%)
At close: Oct 23, 2026, 4:00 PM EDT
16.44
+0.03 (0.18%)
After-hours: Oct 23, 2026, 7:30 PM EDT

Arqit Quantum Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Oct 23, 202615.7516.9515.5116.4116.413.80%146,922
Oct 22, 202616.1516.7715.5015.8115.81-3.60%217,080
Oct 21, 202615.4516.7315.3616.4016.407.12%263,243
Oct 20, 202613.6415.6313.5015.3115.319.20%221,967
Oct 19, 202614.6214.6413.3714.0214.02-402,653
Oct 16, 202615.9916.0613.9214.0214.02-11.82%401,822
Oct 15, 202614.9715.9014.5015.9015.903.45%326,710
Oct 14, 202616.4216.5315.3215.3715.37-8.73%311,963
Oct 13, 202616.4717.1916.2116.8416.841.11%232,881
Oct 12, 202617.2717.9716.5816.6616.66-3.34%292,489
Oct 9, 202619.2219.3616.2917.2317.23-6.51%742,924
Oct 8, 202622.1522.5017.8118.4318.43-18.27%832,285
Oct 7, 202622.3322.6922.0022.5522.55-3.76%171,355
Oct 6, 202623.9824.8023.3323.4323.43-1.06%157,377
Oct 5, 202624.3424.4423.4823.6823.68-3.82%166,962
Oct 2, 202624.3024.9324.0824.6224.622.80%194,166
Oct 1, 202624.0024.1623.0523.9523.95-0.46%130,120
Sep 30, 202624.4825.0023.9024.0624.06-0.25%160,439
Sep 29, 202624.8625.1023.8024.1224.12-2.11%212,682
Sep 28, 202624.3024.8623.5624.6424.640.16%194,636
Sep 25, 202623.1624.9922.4924.6024.606.40%371,853
Sep 24, 202621.9423.6121.7023.1223.122.57%263,083
Sep 23, 202623.3023.5522.0222.5422.54-2.17%237,413
Sep 22, 202623.5124.5022.5223.0423.04-2.08%391,604
Sep 21, 202620.5523.6820.5323.5323.5316.89%465,851
Sep 18, 202619.7620.4818.4120.1320.133.12%655,548
Sep 17, 202619.5919.9519.2519.5219.522.68%246,723
Sep 16, 202618.2119.3318.0819.0119.014.05%492,206
Sep 15, 202616.6619.0016.4018.2718.2712.15%769,713
Sep 14, 202619.2219.2216.0716.2916.29-18.75%1,483,915
Sep 11, 202620.7120.9520.0020.0520.05-2.58%131,617
Sep 10, 202620.7021.7120.5520.5820.58-4.90%173,039
Sep 9, 202622.2122.8221.4021.6421.64-4.21%259,822
Sep 8, 202622.1723.2922.1222.5922.595.71%259,852
Sep 4, 202620.8521.4020.2321.3721.373.64%149,439
Sep 3, 202620.5421.3620.2020.6220.620.39%250,434
Sep 2, 202618.6021.2818.6020.5420.548.68%668,205
Sep 1, 202619.2519.6518.7418.9018.90-4.93%161,499
Aug 31, 202619.3320.4619.2419.8819.88-0.80%121,921
Aug 28, 202621.4221.7019.9020.0420.04-6.62%202,673
Aug 27, 202621.0521.9520.8521.4621.465.40%190,301
Aug 26, 202620.3820.9919.9020.3620.36-0.29%176,691
Aug 25, 202620.9221.7020.1220.4220.421.44%190,952
Aug 24, 202620.7520.7519.2520.1320.13-4.78%247,385
Aug 21, 202621.3422.4920.3521.1421.140.96%724,845
Aug 20, 202621.1521.5720.3520.9420.94-2.74%154,139
Aug 19, 202621.5021.8820.7521.5321.53-2.05%329,135
Aug 18, 202622.8223.8621.8021.9821.98-9.73%336,794
Aug 17, 202624.1224.6323.3024.3524.35-0.04%226,915
Aug 14, 202623.4724.9023.3024.3624.362.57%181,881