Quantum-Si incorporated (QSI)
NASDAQ: QSI · Real-Time Price · USD
0.8224
+0.0031 (0.38%)
At close: Jul 17, 2026, 4:00 PM EDT
0.8225
+0.0001 (0.01%)
After-hours: Jul 17, 2026, 7:57 PM EDT

Quantum-Si incorporated Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Jul 17, 20260.820.850.800.820.820.38%2,280,948
Jul 16, 20260.850.860.810.820.82-4.95%3,698,316
Jul 15, 20260.870.900.860.860.86-0.48%2,243,427
Jul 14, 20260.870.900.860.870.87-0.36%1,206,085
Jul 13, 20260.880.880.850.870.87-1.52%3,514,120
Jul 10, 20260.950.950.880.880.88-8.28%2,870,582
Jul 9, 20260.910.970.900.960.965.45%2,553,281
Jul 8, 20260.890.930.890.910.91-0.74%3,396,625
Jul 7, 20260.940.950.900.920.92-3.38%3,710,303
Jul 6, 20260.930.980.930.950.952.29%2,626,554
Jul 2, 20260.931.010.920.930.930.68%6,037,313
Jul 1, 20260.880.960.880.920.924.42%5,506,506
Jun 30, 20260.880.920.870.890.89-0.44%3,187,245
Jun 29, 20260.860.910.850.890.893.99%3,989,704
Jun 26, 20260.840.890.800.850.85-0.29%18,909,693
Jun 25, 20260.850.890.780.860.863.64%8,412,380
Jun 24, 20260.900.920.830.830.83-6.00%5,134,233
Jun 23, 20260.910.930.880.880.88-4.47%5,546,420
Jun 22, 20261.001.070.920.920.92-7.79%5,934,924
Jun 18, 20260.961.030.961.001.005.79%6,343,780
Jun 17, 20260.971.000.930.940.94-1.02%3,473,136
Jun 16, 20261.001.000.940.950.95-3.49%3,727,901
Jun 15, 20261.011.050.980.990.994.42%9,422,150
Jun 12, 20260.981.010.930.950.95-2.70%3,328,009
Jun 11, 20260.950.980.920.970.972.80%3,444,732
Jun 10, 20260.981.020.950.950.95-4.11%3,451,896
Jun 9, 20261.061.080.940.990.99-6.88%8,116,900
Jun 8, 20261.091.101.031.061.060.95%4,310,428
Jun 5, 20261.251.251.011.051.05-17.97%8,905,019
Jun 4, 20261.191.301.171.281.287.56%9,559,236
Jun 3, 20261.221.221.161.191.19-4.03%7,952,203
Jun 2, 20261.171.261.161.241.245.08%7,380,077
Jun 1, 20261.171.251.121.181.18-0.84%7,407,284
May 29, 20261.211.211.111.191.19-0.83%7,289,734
May 28, 20261.111.211.081.201.206.19%7,411,582
May 27, 20261.061.191.031.131.134.63%8,573,709
May 26, 20261.081.091.011.081.081.89%7,550,891
May 22, 20261.001.091.001.061.067.07%8,816,195
May 21, 20260.870.990.870.990.9913.05%11,368,930
May 20, 20260.870.880.840.880.881.71%4,706,237
May 19, 20260.850.870.820.860.860.83%3,116,017
May 18, 20260.900.900.830.850.85-4.07%4,577,467
May 15, 20260.910.910.880.890.89-4.59%3,706,076
May 14, 20260.930.960.910.930.930.38%4,436,223
May 13, 20260.930.960.900.930.93-1.60%4,868,987
May 12, 20260.921.030.900.940.942.42%10,063,496
May 11, 20260.900.950.890.920.921.72%5,786,596
May 8, 20260.950.970.880.910.91-7.55%13,192,853
May 7, 20261.031.030.960.980.98-4.80%7,220,967
May 6, 20260.971.040.961.031.037.15%8,075,250