Quantum-Si Incorporated (QSI)
NASDAQ:QSI
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Time Period
1Y
Events
Historical Prices
Rows:
May 28, 2026
1.11
1.21
1.08
1.20
1.20
+6.19%
7,411,582
1.49
May 27, 2026
1.06
1.19
1.03
1.13
1.13
+4.63%
8,573,709
1.76
May 26, 2026
1.08
1.09
1.01
1.08
1.08
+1.89%
7,550,891
1.58
May 22, 2026
1.00
1.09
1.00
1.06
1.06
+7.07%
8,816,195
1.89
May 21, 2026
0.87
0.99
0.87
0.99
0.99
+13.14%
11,368,930
2.52
May 20, 2026
0.87
0.88
0.84
0.88
0.88
+1.63%
4,706,237
1.05
May 19, 2026
0.85
0.87
0.82
0.86
0.86
+0.94%
3,116,017
0.69
May 18, 2026
0.90
0.90
0.83
0.85
0.85
-4.16%
4,577,467
1.02
May 15, 2026
0.91
0.91
0.88
0.89
0.89
-4.51%
3,706,076
0.83
May 14, 2026
0.93
0.96
0.91
0.93
0.93
+0.32%
4,436,223
1.00
May 13, 2026
0.93
0.96
0.90
0.93
0.93
-1.59%
4,868,987
1.11
May 12, 2026
0.92
1.03
0.90
0.94
0.94
+2.39%
10,063,500
2.33
May 11, 2026
0.90
0.95
0.89
0.92
0.92
+1.77%
5,745,078
1.34
May 08, 2026
0.95
0.97
0.88
0.91
0.91
-7.55%
13,192,850
3.18
May 07, 2026
1.03
1.03
0.96
0.98
0.98
-4.85%
7,220,967
1.77
May 06, 2026
0.97
1.04
0.96
1.03
1.03
+7.18%
8,075,250
1.98
May 05, 2026
0.98
0.98
0.95
0.96
0.96
-1.03%
2,515,970
0.60
May 04, 2026
0.95
0.99
0.94
0.97
0.97
+1.36%
2,873,511
0.68
May 01, 2026
0.98
1.00
0.94
0.96
0.96
-2.24%
3,590,011
0.85
Apr 30, 2026
0.88
1.02
0.88
0.98
0.98
+13.43%
11,918,780
2.90
Apr 29, 2026
0.90
0.91
0.86
0.86
0.86
-5.26%
3,417,720
0.82
Apr 28, 2026
0.89
0.94
0.89
0.91
0.91
+1.33%
3,159,350
0.75
Apr 27, 2026
0.91
0.94
0.87
0.90
0.90
-0.55%
3,118,018
0.74
Apr 24, 2026
0.98
0.98
0.90
0.91
0.91
-3.72%
7,282,600
1.76
Apr 23, 2026
1.03
1.04
0.92
0.94
0.94
-11.32%
7,311,019
1.80
Apr 22, 2026
0.99
1.07
0.96
1.06
1.06
+8.50%
11,054,680
2.79
Apr 21, 2026
1.00
1.05
0.98
0.98
0.98
-3.27%
5,203,062
1.31
Apr 20, 2026
1.02
1.06
0.98
1.01
1.01
-5.61%
7,820,642
1.99
Apr 17, 2026
1.07
1.14
1.06
1.07
1.07
+2.88%
7,021,500
1.80
Apr 16, 2026
1.08
1.09
1.00
1.04
1.04
-0.95%
7,641,472
2.02
Apr 15, 2026
0.90
1.06
0.90
1.05
1.05
+25.00%
17,707,471
4.92
Apr 14, 2026
0.80
0.86
0.80
0.84
0.84
+6.60%
3,070,566
0.85
Apr 13, 2026
0.74
0.79
0.72
0.79
0.79
+6.49%
2,650,507
0.73
Apr 10, 2026
0.75
0.77
0.73
0.74
0.74
-0.80%
1,881,862
0.51
Apr 09, 2026
0.75
0.76
0.73
0.75
0.75
-0.53%
2,638,571
0.71
Apr 08, 2026
0.78
0.78
0.74
0.75
0.75
+5.49%
3,149,017
0.84
Apr 07, 2026
0.73
0.73
0.69
0.71
0.71
-2.47%
3,515,255
0.93
Apr 06, 2026
0.74
0.77
0.73
0.73
0.73
-2.41%
1,890,500
0.50
Apr 03, 2026
0.74
0.76
0.72
0.75
0.75
0.00%
0
0.00
Apr 02, 2026
0.74
0.76
0.72
0.75
0.75
0.00%
2,571,803
0.64
Apr 01, 2026
0.79
0.80
0.75
0.75
0.75
-3.49%
2,354,460
0.58
Mar 31, 2026
0.76
0.80
0.76
0.77
0.77
+5.02%
2,872,471
0.70
Mar 30, 2026
0.76
0.78
0.73
0.74
0.74
-3.53%
3,758,169
0.90
Mar 27, 2026
0.80
0.82
0.76
0.76
0.76
-5.45%
3,155,727
0.74
Mar 26, 2026
0.86
0.86
0.81
0.81
0.81
-6.59%
2,607,174
0.61
Mar 25, 2026
0.86
0.90
0.86
0.87
0.87
+1.65%
2,540,150
0.59
Mar 24, 2026
0.89
0.90
0.83
0.85
0.85
-5.23%
2,639,799
0.61
Mar 23, 2026
0.85
0.91
0.79
0.90
0.90
+6.27%
4,548,043
1.05
Mar 20, 2026
0.87
0.88
0.83
0.85
0.85
-1.86%
3,803,370
0.87
Mar 19, 2026
0.88
0.89
0.85
0.86
0.86
-2.38%
2,413,378
0.55
Rows: