Skip to main content
Quantum-Si incorporated (QSI)
NASDAQ: QSI · Real-Time Price · USD
1.440
-0.030 (-2.04%)
Dec 5, 2025, 4:00 PM EST - Market closed

Quantum-Si incorporated Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Dec 5, 20251.481.491.411.441.44-2.04%3,650,363
Dec 4, 20251.341.491.341.471.478.09%5,855,625
Dec 3, 20251.281.361.261.361.367.09%4,045,043
Dec 2, 20251.301.341.271.271.27-1.55%3,300,053
Dec 1, 20251.361.361.281.291.29-8.51%3,377,529
Nov 28, 20251.361.431.361.411.414.44%2,359,866
Nov 26, 20251.361.391.311.351.35-4,443,550
Nov 25, 20251.361.371.291.351.35-3,520,439
Nov 24, 20251.271.351.261.351.356.30%4,637,084
Nov 21, 20251.221.281.191.271.272.42%5,187,663
Nov 20, 20251.371.401.231.241.24-3.13%6,750,856
Nov 19, 20251.271.381.251.281.280.79%5,939,770
Nov 18, 20251.281.351.231.271.27-2.31%5,006,762
Nov 17, 20251.371.411.261.301.30-5.11%4,656,763
Nov 14, 20251.271.451.271.371.37-1.44%7,297,913
Nov 13, 20251.501.521.381.391.39-8.55%7,063,552
Nov 12, 20251.581.621.521.521.52-3.80%5,462,113
Nov 11, 20251.591.651.551.581.58-0.94%4,498,553
Nov 10, 20251.731.741.591.601.601.27%5,590,422
Nov 7, 20251.551.621.461.581.58-4.55%9,690,597
Nov 6, 20251.771.771.591.651.65-8.33%9,785,114
Nov 5, 20251.851.891.771.801.80-2.17%8,577,197
Nov 4, 20251.861.951.821.841.84-8.00%7,175,474
Nov 3, 20252.152.191.952.002.00-6.98%9,521,727
Oct 31, 20252.042.162.032.152.155.91%6,172,895
Oct 30, 20252.052.122.022.032.03-5.14%6,739,675
Oct 29, 20252.142.232.092.142.14-1.83%7,171,252
Oct 28, 20252.312.322.142.182.18-6.84%9,163,726
Oct 27, 20252.382.422.222.342.342.18%10,282,659
Oct 24, 20252.322.442.262.292.294.09%11,745,557
Oct 23, 20252.382.382.172.202.20-12,164,767
Oct 22, 20252.222.342.002.202.20-5.98%18,410,361
Oct 21, 20252.482.522.272.342.34-9.48%15,333,668
Oct 20, 20252.422.732.392.592.5913.38%22,176,467
Oct 17, 20252.382.532.262.282.28-10.24%20,988,672
Oct 16, 20252.813.102.502.542.54-3.42%49,550,529
Oct 15, 20252.452.752.362.632.6322.33%53,572,323
Oct 14, 20252.012.261.962.152.153.37%23,794,582
Oct 13, 20251.752.131.732.082.0824.55%33,370,615
Oct 10, 20251.811.951.661.671.67-4.02%21,776,904
Oct 9, 20251.771.801.691.741.74-1.69%6,852,637
Oct 8, 20251.761.821.701.771.77-8,810,728
Oct 7, 20251.851.921.681.771.77-2.21%18,189,350
Oct 6, 20251.711.871.661.811.815.23%17,235,682
Oct 3, 20251.571.761.561.721.7211.69%19,291,713
Oct 2, 20251.491.561.461.541.545.48%8,024,442
Oct 1, 20251.421.501.411.461.463.55%5,506,554
Sep 30, 20251.361.441.351.411.411.44%5,733,688
Sep 29, 20251.401.431.351.391.39-6.71%9,550,045
Sep 26, 20251.541.611.471.491.49-1.32%7,793,707
Sep 25, 20251.521.551.441.511.51-6.21%10,700,557
Sep 24, 20251.641.751.591.611.610.63%13,282,695
Sep 23, 20251.781.791.561.601.60-5.88%21,284,357
Sep 22, 20251.531.731.431.701.7013.33%24,913,430
Sep 19, 20251.471.601.451.501.50-1.96%23,200,207
Sep 18, 20251.311.641.301.531.5321.43%37,180,141
Sep 17, 20251.301.341.241.261.26-5.26%10,309,325
Sep 16, 20251.291.341.251.331.335.56%7,290,684
Sep 15, 20251.201.291.181.261.266.78%8,873,031
Sep 12, 20251.221.261.171.181.18-1.67%6,110,612
Sep 11, 20251.111.221.111.201.207.14%7,399,164
Sep 10, 20251.151.161.081.121.12-2.61%4,230,873
Sep 9, 20251.061.161.061.151.158.49%3,994,125
Sep 8, 20251.091.101.041.061.06-1.85%4,089,700
Sep 5, 20251.071.101.031.081.080.93%3,433,260
Sep 4, 20251.071.081.031.071.07-3,698,750
Sep 3, 20251.081.111.031.071.07-0.93%3,838,592
Sep 2, 20251.101.131.071.081.08-3.57%4,078,682
Aug 29, 20251.141.151.101.121.12-2.61%3,471,787
Aug 28, 20251.191.221.131.151.15-0.86%4,261,908
Aug 27, 20251.161.221.151.161.16-0.85%5,191,520
Aug 26, 20251.131.181.111.171.172.63%3,624,365
Aug 25, 20251.131.171.111.141.14-3,877,413
Aug 22, 20251.101.161.061.141.142.70%6,872,459
Aug 21, 20250.981.140.981.111.1111.00%9,296,919
Aug 20, 20251.011.020.951.001.00-2.91%11,048,277
Aug 19, 20251.131.141.021.031.03-5.50%7,997,647
Aug 18, 20251.111.121.091.091.09-0.91%4,931,097
Aug 15, 20251.131.141.091.101.10-1.79%5,863,645
Aug 14, 20251.181.191.081.121.12-4.27%9,810,755
Aug 13, 20251.191.211.141.171.170.86%7,961,070
Aug 12, 20251.201.221.141.161.16-3.33%9,882,629
Aug 11, 20251.271.281.181.201.20-5.51%8,681,807
Aug 8, 20251.331.351.261.271.27-4.51%6,536,088
Aug 7, 20251.361.381.311.331.33-2.92%4,185,198
Aug 6, 20251.361.391.271.371.37-4.86%8,481,578
Aug 5, 20251.461.481.401.441.44-7,832,861
Aug 4, 20251.491.491.431.441.44-1.37%4,385,133
Aug 1, 20251.421.491.401.461.46-1.35%4,434,681
Jul 31, 20251.621.621.471.481.48-8.64%11,156,626
Jul 30, 20251.701.701.611.621.62-0.92%4,441,658
Jul 29, 20251.801.801.601.641.64-8.66%9,424,027
Jul 28, 20251.931.951.761.791.79-7.25%6,785,434
Jul 25, 20251.971.981.851.931.93-2.53%7,424,730
Jul 24, 20251.951.991.861.981.985.32%10,677,478
Jul 23, 20251.831.901.771.881.884.44%8,536,946
Jul 22, 20251.741.811.681.801.804.65%5,848,755
Jul 21, 20251.781.801.711.721.72-2.27%5,667,910
Jul 18, 20251.841.861.751.761.76-3.30%6,449,250
Jul 17, 20251.811.851.791.821.821.11%6,462,155