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Quantum-Si incorporated (QSI)
NASDAQ: QSI · Real-Time Price · USD
0.855
-0.003 (-0.29%)
At close: Jun 26, 2026, 4:00 PM EDT
0.860
+0.005 (0.61%)
After-hours: Jun 26, 2026, 7:59 PM EDT

Quantum-Si incorporated Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Jun 26, 20260.840.890.800.850.85-0.29%18,305,558
Jun 25, 20260.850.890.780.860.863.64%8,159,292
Jun 24, 20260.900.920.830.830.83-6.00%5,014,115
Jun 23, 20260.910.930.880.880.88-4.47%5,476,541
Jun 22, 20261.001.070.920.920.92-7.79%5,841,460
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
May 5, 20260.980.980.950.960.96-1.05%2,515,970
May 4, 20260.950.990.940.970.971.39%2,873,511
May 1, 20260.981.000.940.960.96-2.28%3,590,011
Apr 30, 20260.881.020.880.980.9813.39%11,918,778
Apr 29, 20260.900.910.860.860.86-5.18%3,449,640
Apr 28, 20260.890.940.890.910.911.30%3,159,350
Apr 27, 20260.910.940.870.900.90-0.61%3,118,018
Apr 24, 20260.980.980.900.910.91-3.70%7,282,600
Apr 23, 20261.031.040.920.940.94-11.26%7,311,019
Apr 22, 20260.991.070.961.061.068.50%11,054,678
Apr 21, 20261.001.050.980.980.98-3.27%5,203,062
Apr 20, 20261.021.060.981.011.01-5.61%7,820,642
Apr 17, 20261.071.141.061.071.072.88%7,021,500
Apr 16, 20261.081.091.001.041.04-0.95%7,641,472
Apr 15, 20260.901.060.901.051.0524.88%17,707,467
Apr 14, 20260.800.860.800.840.846.61%3,070,566
Apr 13, 20260.740.790.720.790.796.51%2,650,507
Apr 10, 20260.750.770.730.740.74-0.86%1,881,862
Apr 9, 20260.750.760.730.750.75-0.48%2,638,571
Apr 8, 20260.780.780.740.750.755.50%3,188,982
Apr 7, 20260.730.730.690.710.71-2.43%3,515,255
Apr 6, 20260.740.770.730.730.73-2.50%1,890,500
Apr 2, 20260.740.760.720.750.750.03%2,571,803
Apr 1, 20260.790.800.750.750.75-3.41%2,354,460
Mar 31, 20260.760.800.760.770.774.91%2,872,471
Mar 30, 20260.760.780.730.740.74-3.44%3,758,169
Mar 27, 20260.800.820.760.760.76-5.52%3,169,678
Mar 26, 20260.860.860.810.810.81-6.51%2,619,269
Mar 25, 20260.860.900.860.870.871.63%2,549,869
Mar 24, 20260.890.900.830.850.85-5.22%2,660,281
Mar 23, 20260.850.910.790.900.906.26%4,568,838
Mar 20, 20260.870.880.830.850.85-1.88%3,813,291
Mar 19, 20260.880.890.850.860.86-2.39%2,419,119
Mar 18, 20260.930.940.880.880.88-5.14%3,158,802
Mar 17, 20260.950.960.920.930.93-1.41%2,787,347
Mar 16, 20260.960.980.940.940.94-0.64%2,701,770
Mar 13, 20260.981.010.930.950.95-2.70%2,835,009
Mar 12, 20261.021.020.950.980.98-7.05%3,977,826
Mar 11, 20261.051.071.001.051.050.96%3,613,642
Mar 10, 20260.941.100.941.041.0412.32%8,474,557
Mar 9, 20260.880.930.850.930.937.44%4,955,006
Mar 6, 20260.890.900.840.860.86-5.24%5,636,902
Mar 5, 20260.900.970.890.910.91-0.05%4,219,538
Mar 4, 20260.950.980.910.910.91-4.01%2,970,475
Mar 3, 20260.920.970.900.950.951.56%3,196,938
Mar 2, 20260.930.960.910.930.93-2.40%1,840,206
Feb 27, 20260.981.000.950.960.96-5.31%2,595,522
Feb 26, 20261.011.030.971.011.012.01%2,267,939
Feb 25, 20260.951.020.930.990.996.44%3,162,889
Feb 24, 20260.910.950.910.930.932.01%1,370,156
Feb 23, 20260.940.950.900.910.91-3.07%1,888,673
Feb 20, 20260.960.960.930.940.94-2.07%1,754,682
Feb 19, 20260.900.980.890.960.965.99%3,993,492
Feb 18, 20260.960.980.900.910.91-3.45%4,913,424
Feb 17, 20260.990.990.940.940.94-5.23%3,547,286
Feb 13, 20260.991.050.990.990.991.59%3,127,829
Feb 12, 20261.051.060.960.980.98-6.24%5,890,675
Feb 11, 20261.121.121.011.041.04-5.45%4,048,955
Feb 10, 20261.101.111.061.101.102.80%3,669,788
Feb 9, 20261.091.091.021.071.070.47%3,147,984
Feb 6, 20261.021.090.961.071.0714.26%7,481,632
Feb 5, 20261.031.040.920.930.93-9.50%8,157,489
Feb 4, 20261.101.111.001.031.03-5.50%6,372,623
Feb 3, 20261.111.131.051.091.09-0.91%5,044,796