Quantum Corporation (QMCO)
NASDAQ: QMCO · Real-Time Price · USD
18.69
+1.07 (6.07%)
At close: Oct 26, 2026, 4:00 PM EDT
18.99
+0.30 (1.61%)
After-hours: Oct 26, 2026, 7:59 PM EDT

Quantum Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Oct 26, 202617.5019.4117.1818.6918.696.07%1,429,040
Oct 23, 202617.6418.9917.3617.6217.623.77%1,935,013
Oct 22, 202617.0717.8016.7416.9816.98-3.63%1,787,626
Oct 21, 202619.2019.2317.2517.6217.62-7.21%2,146,013
Oct 20, 202617.6020.0317.4118.9918.993.71%1,630,429
Oct 19, 202619.1119.5318.2218.3118.31-0.92%1,683,634
Oct 16, 202621.0321.0618.4218.4818.48-14.46%1,983,170
Oct 15, 202622.5022.5220.3821.6121.61-9.45%3,325,386
Oct 14, 202625.5226.2423.7723.8623.86-10.03%1,146,015
Oct 13, 202626.0228.0725.7826.5226.52-3.60%2,077,232
Oct 12, 202629.4129.9826.5827.5127.51-9.58%2,369,689
Oct 9, 202629.8930.8028.3030.4330.434.27%1,202,181
Oct 8, 202630.1532.5528.5529.1829.18-6.08%1,919,372
Oct 7, 202632.5033.3930.4031.0731.07-7.17%1,446,724
Oct 6, 202634.0235.4133.2933.4733.47-1.57%1,417,517
Oct 5, 202634.3935.6533.6434.0134.01-1.43%1,650,245
Oct 2, 202630.1035.1729.8534.5034.508.20%3,653,415
Oct 1, 202633.1934.3731.5131.8931.890.52%1,918,157
Sep 30, 202632.8333.1831.4031.7231.72-3.47%1,300,179
Sep 29, 202632.3234.6831.1732.8632.864.65%1,967,780
Sep 28, 202631.6532.9031.0731.4031.40-0.88%1,616,579
Sep 25, 202630.0133.0129.0231.6831.687.43%4,241,080
Sep 24, 202625.3932.0825.1029.4929.4913.55%5,219,085
Sep 23, 202625.4429.1524.5025.9725.971.25%3,691,574
Sep 22, 202626.0526.4924.6525.6525.65-1.72%1,105,435
Sep 21, 202626.0226.5025.0626.1026.104.03%1,097,529
Sep 18, 202624.8325.3124.3025.0925.090.60%1,874,028
Sep 17, 202624.6826.3924.5924.9424.944.66%1,451,288
Sep 16, 202623.5624.3722.9023.8323.832.45%759,232
Sep 15, 202622.9024.0722.6123.2623.261.91%875,105
Sep 14, 202622.6024.1421.8022.8322.83-3.20%961,388
Sep 11, 202623.0323.7222.3023.5823.582.39%786,221
Sep 10, 202623.5424.5422.9023.0323.03-4.99%987,463
Sep 9, 202624.4025.4924.0824.2424.24-0.90%861,644
Sep 8, 202624.7325.7524.3324.4624.46-1.09%1,445,347
Sep 4, 202624.4725.4823.9324.7324.731.77%1,048,916
Sep 3, 202622.8124.3721.7224.3024.306.67%795,489
Sep 2, 202624.0524.4222.2722.7822.78-5.75%917,340
Sep 1, 202623.8524.6823.0624.1724.17-0.66%861,847
Aug 31, 202621.9724.4121.4124.3324.339.30%1,205,296
Aug 28, 202623.4223.7221.9122.2622.26-5.52%729,094
Aug 27, 202623.5023.8522.8423.5623.561.51%878,878
Aug 26, 202622.3123.2621.7223.2123.213.66%858,658
Aug 25, 202621.9022.4121.0122.3922.393.85%965,559
Aug 24, 202621.3121.9120.4821.5621.56-3.10%925,635
Aug 21, 202620.8022.4019.7322.2522.258.59%1,466,735
Aug 20, 202621.5221.7919.7320.4920.49-5.97%1,461,517
Aug 19, 202623.2723.2721.2921.7921.79-7.36%1,862,782
Aug 18, 202623.8426.2823.4623.5223.52-5.62%1,596,759
Aug 17, 202624.8325.9523.7524.9224.92-4.56%2,094,629