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Quantum-Si (QSI)
NASDAQ:QSI
Time Period
1Y
Events
Historical Prices
Rows:
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
Mar 18, 2026
0.93
0.94
0.88
0.88
0.88
-5.16%
3,112,897
0.70
Mar 17, 2026
0.95
0.96
0.92
0.93
0.93
-1.38%
2,762,536
0.62
Mar 16, 2026
0.96
0.98
0.94
0.94
0.94
-0.63%
2,698,390
0.60
Mar 13, 2026
0.98
1.01
0.93
0.95
0.95
-2.77%
2,831,289
0.63
Mar 12, 2026
1.02
1.02
0.95
0.98
0.98
-7.05%
3,970,237
0.88
Mar 11, 2026
1.05
1.07
1.00
1.05
1.05
+0.96%
3,538,402
0.78
Mar 10, 2026
0.94
1.10
0.94
1.04
1.04
+12.43%
8,424,104
1.89
Mar 09, 2026
0.88
0.93
0.85
0.93
0.93
+7.43%
4,877,330
1.10
Mar 06, 2026
0.89
0.90
0.84
0.86
0.86
-5.28%
5,636,902
1.28
Mar 05, 2026
0.90
0.97
0.89
0.91
0.91
-0.11%
4,219,538
0.96
Mar 04, 2026
0.95
0.98
0.91
0.91
0.91
-4.01%
2,970,475
0.67
Mar 03, 2026
0.92
0.97
0.90
0.95
0.95
+1.61%
3,196,938
0.72
Mar 02, 2026
0.93
0.96
0.91
0.93
0.93
-2.41%
1,840,206
0.41
Feb 27, 2026
0.98
1.00
0.95
0.96
0.96
-5.35%
2,595,522
0.58
Feb 26, 2026
1.01
1.03
0.97
1.01
1.01
+2.02%
2,267,939
0.50
Feb 25, 2026
0.95
1.02
0.93
0.99
0.99
+6.45%
3,162,889
0.70
Feb 24, 2026
0.91
0.95
0.91
0.93
0.93
+2.09%
1,370,156
0.30
Feb 23, 2026
0.94
0.95
0.90
0.91
0.91
-3.09%
1,888,673
0.41
Feb 20, 2026
0.96
0.96
0.93
0.94
0.94
-2.08%
1,754,682
0.37
Feb 19, 2026
0.90
0.98
0.89
0.96
0.96
+5.96%
3,993,492
0.85
Feb 18, 2026
0.96
0.98
0.90
0.91
0.91
-3.41%
4,913,424
1.04
Feb 17, 2026
0.99
0.99
0.94
0.94
0.94
-5.25%
3,547,286
0.75
Feb 16, 2026
0.99
1.05
0.99
0.99
0.99
0.00%
0
0.00
Feb 13, 2026
0.99
1.05
0.99
0.99
0.99
+1.54%
3,127,829
0.64
Feb 12, 2026
1.05
1.06
0.96
0.98
0.98
-6.25%
5,890,675
1.20
Feb 11, 2026
1.12
1.12
1.01
1.04
1.04
-2.80%
4,048,955
0.82
Feb 10, 2026
1.10
1.11
1.06
1.10
1.10
+2.80%
3,669,788
0.74
Feb 09, 2026
1.09
1.09
1.02
1.07
1.07
+0.47%
3,147,984
0.62
Feb 06, 2026
1.02
1.09
0.96
1.07
1.07
+14.27%
7,481,632
1.47
Feb 05, 2026
1.03
1.04
0.92
0.93
0.93
-9.51%
8,157,489
1.60
Feb 04, 2026
1.10
1.11
1.00
1.03
1.03
-5.50%
6,342,860
1.24
Feb 03, 2026
1.11
1.13
1.05
1.09
1.09
-0.91%
5,044,796
0.97
Feb 02, 2026
1.11
1.13
1.09
1.10
1.10
-2.65%
3,771,977
0.72
Jan 30, 2026
1.16
1.19
1.11
1.13
1.13
-3.42%
5,467,545
1.04
Jan 29, 2026
1.20
1.21
1.13
1.17
1.17
-2.50%
6,195,553
1.18
Jan 28, 2026
1.23
1.24
1.17
1.20
1.20
-2.44%
3,995,857
0.75
Jan 27, 2026
1.22
1.26
1.20
1.23
1.23
+1.65%
2,862,494
0.53
Jan 26, 2026
1.25
1.27
1.21
1.21
1.21
-3.20%
3,159,298
0.57
Jan 23, 2026
1.31
1.32
1.24
1.25
1.25
-4.58%
4,082,434
0.71
Jan 22, 2026
1.23
1.33
1.22
1.31
1.31
+6.50%
6,410,600
1.09
Jan 21, 2026
1.20
1.24
1.14
1.23
1.23
+3.36%
4,912,116
0.81
Jan 20, 2026
1.21
1.24
1.18
1.19
1.19
-6.30%
5,676,539
0.90
Jan 19, 2026
1.25
1.32
1.23
1.27
1.27
0.00%
0
0.00
Jan 16, 2026
1.25
1.32
1.23
1.27
1.27
+3.25%
5,462,743
0.74
Jan 15, 2026
1.29
1.30
1.23
1.23
1.23
-3.15%
3,687,382
0.45
Jan 14, 2026
1.27
1.31
1.24
1.27
1.27
0.00%
4,428,131
0.52
Jan 13, 2026
1.25
1.32
1.20
1.27
1.27
+4.96%
5,767,924
0.65
Jan 12, 2026
1.21
1.25
1.18
1.21
1.21
-0.82%
4,925,431
0.54
Rows: