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Quantum-Si Incorporated - Class A Common Stock (NQ:QSI)

0.8613 -0.0211 (-2.39%)
Streaming Delayed Price Updated: 4:00 PM EDT, Mar 19, 2026 Add to My Watchlist
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Historical Prices

Month:
Year:
Range:
Date Open High Low Close Volume Change (%)
Mar 19, 2026 0.8800 0.8861 0.8517 0.8613 2,418,960 -0.02(-2.39%)
Mar 18, 2026 0.9288 0.9358 0.8811 0.8824 3,132,274 -0.05(-5.14%)
Mar 17, 2026 0.9455 0.9600 0.9235 0.9302 2,775,957 -0.01(-1.41%)
Mar 16, 2026 0.9500 0.9800 0.9408 0.9435 2,701,259 -0.01(-0.64%)
Mar 13, 2026 0.9846 1.010 0.9333 0.9496 2,835,010 -0.03(-2.70%)
Mar 12, 2026 1.020 1.020 0.9500 0.9760 3,975,009 -0.07(-7.05%)
Mar 11, 2026 1.050 1.070 1.000 1.050 3,568,758 +0.01(+0.96%)
Mar 10, 2026 0.9400 1.100 0.9352 1.040 8,454,545 +0.11(+12.32%)
Mar 09, 2026 0.8750 0.9326 0.8500 0.9259 4,933,230 +0.06(+7.44%)
Mar 06, 2026 0.8900 0.9000 0.8420 0.8618 5,636,905 -0.05(-5.24%)
Mar 05, 2026 0.9000 0.9735 0.8906 0.9095 4,155,313 -0.00(-0.05%)
Mar 04, 2026 0.9480 0.9750 0.9100 0.9100 2,953,642 -0.04(-4.01%)
Mar 03, 2026 0.9200 0.9747 0.8973 0.9480 3,165,030 +0.01(+1.56%)
Mar 02, 2026 0.9300 0.9553 0.9100 0.9334 1,815,453 -0.02(-2.40%)
Feb 27, 2026 0.9789 1.000 0.9500 0.9564 2,595,528 -0.05(-5.31%)
Feb 26, 2026 1.010 1.025 0.9687 1.010 2,263,031 +0.02(+2.01%)
Feb 25, 2026 0.9500 1.020 0.9302 0.9901 3,142,714 +0.06(+6.44%)
Feb 24, 2026 0.9100 0.9545 0.9100 0.9302 1,364,759 +0.02(+2.01%)
Feb 23, 2026 0.9400 0.9493 0.9020 0.9119 1,882,955 -0.03(-3.07%)
Feb 20, 2026 0.9577 0.9626 0.9323 0.9408 1,754,682 -0.02(-2.07%)
Feb 19, 2026 0.9000 0.9815 0.8870 0.9607 3,980,827 +0.05(+5.99%)
Feb 18, 2026 0.9620 0.9772 0.9000 0.9064 4,864,877 -0.03(-3.45%)
Feb 17, 2026 0.9900 0.9921 0.9353 0.9388 3,529,511 -0.05(-5.23%)
Feb 13, 2026 0.9900 1.050 0.9886 0.9906 3,127,839 +0.02(+1.59%)
Feb 12, 2026 1.050 1.060 0.9601 0.9751 5,874,162 -0.06(-6.24%)
Feb 11, 2026 1.120 1.120 1.010 1.040 4,034,466 -0.06(-5.45%)
Feb 10, 2026 1.100 1.110 1.060 1.100 3,659,962 +0.03(+2.80%)
Feb 09, 2026 1.090 1.090 1.020 1.070 3,140,443 +0.01(+0.47%)
Feb 06, 2026 1.020 1.090 0.9600 1.065 7,481,633 +0.13(+14.26%)
Feb 05, 2026 1.030 1.040 0.9248 0.9321 8,114,952 -0.10(-9.50%)
Feb 04, 2026 1.100 1.110 0.9953 1.030 6,345,937 -0.06(-5.50%)
Feb 03, 2026 1.110 1.125 1.050 1.090 5,027,221 -0.01(-0.91%)
Feb 02, 2026 1.110 1.130 1.090 1.100 3,751,957 -0.03(-2.65%)
Jan 30, 2026 1.160 1.186 1.110 1.130 5,467,548 -0.04(-3.42%)
Jan 29, 2026 1.200 1.205 1.130 1.170 6,138,480 -0.03(-2.50%)
Jan 28, 2026 1.230 1.240 1.170 1.200 3,911,235 -0.03(-2.44%)
Jan 27, 2026 1.220 1.260 1.200 1.230 2,809,875 +0.02(+1.65%)
Jan 26, 2026 1.250 1.270 1.210 1.210 3,118,048 -0.04(-3.20%)
Jan 23, 2026 1.310 1.320 1.240 1.250 4,117,588 -0.06(-4.58%)
Jan 22, 2026 1.230 1.330 1.220 1.310 6,396,102 +0.08(+6.50%)
Jan 21, 2026 1.200 1.235 1.140 1.230 4,895,503 +0.04(+3.36%)
Jan 20, 2026 1.210 1.240 1.180 1.190 5,726,996 -0.08(-6.30%)
Jan 16, 2026 1.250 1.320 1.230 1.270 5,462,749 +0.04(+3.25%)
Jan 15, 2026 1.290 1.300 1.230 1.230 3,674,652 -0.04(-3.15%)
Jan 14, 2026 1.270 1.310 1.240 1.270 4,422,866 +0.00(+0.00%)
Jan 13, 2026 1.250 1.320 1.200 1.270 5,739,645 +0.06(+4.96%)
Jan 12, 2026 1.210 1.250 1.180 1.210 4,899,286 -0.01(-0.82%)
Jan 09, 2026 1.270 1.280 1.210 1.220 4,460,523 -0.03(-2.40%)
Jan 08, 2026 1.250 1.310 1.240 1.250 4,872,602 -0.01(-0.79%)
Jan 07, 2026 1.290 1.316 1.255 1.260 4,095,276 -0.02(-1.56%)
Jan 06, 2026 1.260 1.340 1.260 1.280 7,608,645 +0.02(+1.59%)
Jan 05, 2026 1.190 1.310 1.185 1.260 8,299,843 +0.10(+8.62%)
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