Quantum-Si incorporated (QSI)
NASDAQ: QSI · Real-Time Price · USD
1.740
-0.030 (-1.69%)
Oct 8, 2025, 10:03 AM EDT - Market open

Quantum-Si incorporated Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Oct 8, 20251.761.791.761.78-0.28%791,548
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%3,765,244
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