NASDAQ:QSI | Historical Stock Price | Quantum-Si Inc

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2020-11-13 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$0.63$1.24$2.44$4.80$9.44$18.602020-11-132026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2024

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2024-12-31$2.70$2.7043,600,500
2024-12-30$3.33$3.3379,231,200
2024-12-27$3.60$3.60256,005,500
2024-12-26$2.15$2.1584,665,100
2024-12-24$1.30$1.305,609,600
2024-12-23$1.31$1.3110,142,200
2024-12-20$1.30$1.3015,831,000
2024-12-19$1.29$1.2916,371,900
2024-12-18$1.28$1.2833,642,100
2024-12-17$1.37$1.3727,058,400
2024-12-16$1.50$1.5024,655,700
2024-12-13$1.72$1.7211,834,100
2024-12-12$1.81$1.8115,034,500
2024-12-11$1.92$1.9237,720,000
2024-12-10$2.26$2.2630,757,800
2024-12-09$1.99$1.9941,510,000
2024-12-06$1.33$1.3310,019,900
2024-12-05$1.20$1.204,945,700
2024-12-04$1.24$1.248,067,900
2024-12-03$1.12$1.124,791,700
2024-12-02$1.14$1.146,692,300
2024-11-29$1.25$1.255,714,400
2024-11-27$1.14$1.146,856,500
2024-11-26$1.23$1.239,814,200
2024-11-25$1.37$1.3728,594,700
2024-11-22$1.62$1.6227,326,600
2024-11-21$1.21$1.2121,959,100
2024-11-20$1.39$1.39283,386,000
2024-11-19$0.63$0.631,400,300
2024-11-18$0.66$0.661,468,500
2024-11-15$0.73$0.73697,100
2024-11-14$0.78$0.78693,100
2024-11-13$0.79$0.79902,700
2024-11-12$0.78$0.781,478,000
2024-11-11$1.00$1.00918,100
2024-11-08$0.94$0.94530,500
2024-11-07$0.90$0.90519,000
2024-11-06$0.90$0.90724,500
2024-11-05$0.85$0.85688,900
2024-11-04$0.76$0.76324,800
2024-11-01$0.77$0.77598,500
2024-10-31$0.70$0.70751,400
2024-10-30$0.74$0.74489,500
2024-10-29$0.77$0.77713,400
2024-10-28$0.77$0.77647,600
2024-10-25$0.75$0.75574,500
2024-10-24$0.78$0.78460,700
2024-10-23$0.79$0.79350,500
2024-10-22$0.80$0.80301,800
2024-10-21$0.80$0.80633,600
2024-10-18$0.82$0.82569,800
2024-10-17$0.78$0.78871,800
2024-10-16$0.82$0.82602,900
2024-10-15$0.84$0.84422,300
2024-10-14$0.81$0.81339,400
2024-10-11$0.83$0.83478,600
2024-10-10$0.79$0.79373,800
2024-10-09$0.82$0.82258,900
2024-10-08$0.84$0.84260,600
2024-10-07$0.83$0.83194,300
2024-10-04$0.88$0.88299,000
2024-10-03$0.84$0.84312,000
2024-10-02$0.83$0.83363,400
2024-10-01$0.84$0.84541,000
2024-09-30$0.88$0.88387,400
2024-09-27$0.91$0.91439,100
2024-09-26$0.90$0.90330,600
2024-09-25$0.90$0.90350,300
2024-09-24$0.94$0.94330,600
2024-09-23$0.91$0.91527,600
2024-09-20$0.98$0.981,411,600
2024-09-19$1.06$1.06691,100
2024-09-18$1.00$1.00725,600
2024-09-17$0.98$0.98321,600
2024-09-16$0.91$0.91312,000
2024-09-13$0.92$0.92454,800
2024-09-12$0.90$0.90313,200
2024-09-11$0.92$0.92260,000
2024-09-10$0.94$0.94325,500
2024-09-09$0.95$0.95528,500
2024-09-06$0.91$0.91554,300
2024-09-05$0.91$0.91200,600
2024-09-04$0.92$0.91326,700
2024-09-03$0.90$0.90350,500
2024-08-30$0.95$0.95291,600
2024-08-29$0.97$0.97509,800
2024-08-28$0.95$0.95355,200
2024-08-27$0.98$0.98275,000
2024-08-26$0.95$0.951,008,900
2024-08-23$1.01$1.01503,700
2024-08-22$0.94$0.94326,600
2024-08-21$1.01$1.01699,900
2024-08-20$0.98$0.98311,400
2024-08-19$1.00$1.00329,300
2024-08-16$0.98$0.98469,800
2024-08-15$1.02$1.02860,300
2024-08-14$0.88$0.88291,400
2024-08-13$0.91$0.91994,300
2024-08-12$0.83$0.83567,600
2024-08-09$0.89$0.89592,100
2024-08-08$0.85$0.85479,100
2024-08-07$0.82$0.82782,000
2024-08-06$0.87$0.87417,300
2024-08-05$0.83$0.831,058,400
2024-08-02$0.89$0.89656,500
2024-08-01$0.99$0.99585,900
2024-07-31$1.09$1.09463,900
2024-07-30$1.04$1.04503,300
2024-07-29$1.06$1.06673,400
2024-07-26$1.11$1.11535,700
2024-07-25$1.15$1.15460,600
2024-07-24$1.04$1.04464,100
2024-07-23$1.13$1.13239,100
2024-07-22$1.12$1.12477,000
2024-07-19$1.03$1.03423,300
2024-07-18$1.09$1.09624,400
2024-07-17$1.16$1.16687,800
2024-07-16$1.22$1.221,031,200
2024-07-15$1.08$1.08762,800
2024-07-12$1.07$1.07706,300
2024-07-11$1.08$1.081,587,900
2024-07-10$0.90$0.90646,000
2024-07-09$0.92$0.92328,900
2024-07-08$0.96$0.96454,500
2024-07-05$0.93$0.93836,600
2024-07-03$0.96$0.96218,400
2024-07-02$0.95$0.95567,800
2024-07-01$0.93$0.931,286,800
2024-06-28$1.05$1.053,170,200
2024-06-27$0.94$0.943,620,700
2024-06-26$0.84$0.8410,084,200
2024-06-25$1.17$1.17633,300
2024-06-24$1.20$1.20488,400
2024-06-21$1.19$1.191,478,400
2024-06-20$1.31$1.31469,800
2024-06-18$1.31$1.31323,300
2024-06-17$1.33$1.33581,100
2024-06-14$1.37$1.37642,600
2024-06-13$1.44$1.44288,300
2024-06-12$1.52$1.52660,100
2024-06-11$1.46$1.46219,600
2024-06-10$1.45$1.45423,100
2024-06-07$1.48$1.48416,700
2024-06-06$1.55$1.55281,000
2024-06-05$1.58$1.58554,900
2024-06-04$1.51$1.51317,200
2024-06-03$1.50$1.50448,800
2024-05-31$1.52$1.521,003,100
2024-05-30$1.56$1.56474,400
2024-05-29$1.57$1.57446,000
2024-05-28$1.58$1.58419,100
2024-05-24$1.62$1.62564,000
2024-05-23$1.66$1.66552,800
2024-05-22$1.76$1.76400,000
2024-05-21$1.73$1.73348,200
2024-05-20$1.77$1.77300,100
2024-05-17$1.80$1.80290,900
2024-05-16$1.86$1.86483,500
2024-05-15$1.86$1.86462,000
2024-05-14$1.83$1.831,372,000
2024-05-13$1.72$1.72625,500
2024-05-10$1.70$1.70562,300
2024-05-09$1.83$1.83508,300
2024-05-08$1.80$1.80327,100
2024-05-07$1.78$1.78557,000
2024-05-06$1.84$1.84581,000
2024-05-03$1.84$1.84844,300
2024-05-02$1.76$1.76321,900
2024-05-01$1.80$1.80897,400
2024-04-30$1.61$1.61301,400
2024-04-29$1.68$1.68469,800
2024-04-26$1.65$1.65357,800
2024-04-25$1.61$1.61427,300
2024-04-24$1.67$1.67440,300
2024-04-23$1.70$1.70631,600
2024-04-22$1.62$1.62382,700
2024-04-19$1.57$1.57731,100
2024-04-18$1.51$1.51768,600
2024-04-17$1.53$1.53567,600
2024-04-16$1.64$1.64576,300
2024-04-15$1.66$1.66790,000
2024-04-12$1.69$1.69697,000
2024-04-11$1.82$1.82606,800
2024-04-10$1.83$1.83496,300
2024-04-09$1.89$1.89534,600
2024-04-08$1.82$1.82416,400
2024-04-05$1.82$1.82451,600
2024-04-04$1.80$1.80461,000
2024-04-03$1.84$1.84838,500
2024-04-02$1.80$1.80481,500
2024-04-01$1.85$1.85512,900
2024-03-28$1.97$1.97762,500
2024-03-27$1.89$1.89358,000
2024-03-26$1.77$1.77750,000
2024-03-25$1.78$1.78510,300
2024-03-22$1.79$1.79703,400
2024-03-21$1.90$1.90579,800
2024-03-20$1.90$1.90943,700
2024-03-19$1.89$1.89699,900
2024-03-18$1.91$1.911,482,200
2024-03-15$1.73$1.731,268,600
2024-03-14$1.77$1.77895,700
2024-03-13$1.82$1.821,016,600
2024-03-12$1.87$1.87975,800
2024-03-11$1.97$1.971,501,700
2024-03-08$2.23$2.233,056,300
2024-03-07$2.09$2.092,951,300
2024-03-06$1.61$1.61646,000
2024-03-05$1.61$1.611,133,000
2024-03-04$1.85$1.851,282,100
2024-03-01$1.85$1.851,170,300
2024-02-29$1.67$1.67987,900
2024-02-28$1.74$1.74559,000
2024-02-27$1.77$1.77753,100
2024-02-26$1.68$1.68582,900
2024-02-23$1.56$1.56240,500
2024-02-22$1.56$1.56475,900
2024-02-21$1.58$1.58354,700
2024-02-20$1.60$1.60456,000
2024-02-16$1.70$1.70698,900
2024-02-15$1.80$1.80779,900
2024-02-14$1.66$1.66514,000
2024-02-13$1.55$1.55791,600
2024-02-12$1.76$1.76939,300
2024-02-09$1.54$1.54508,900
2024-02-08$1.44$1.44844,100
2024-02-07$1.43$1.43720,600
2024-02-06$1.55$1.55381,700
2024-02-05$1.49$1.49442,800
2024-02-02$1.52$1.52614,200
2024-02-01$1.58$1.58597,600
2024-01-31$1.56$1.56624,500
2024-01-30$1.65$1.65527,600
2024-01-29$1.75$1.75466,200
2024-01-26$1.65$1.65415,200
2024-01-25$1.70$1.70619,600
2024-01-24$1.71$1.71586,300
2024-01-23$1.82$1.82503,100
2024-01-22$1.75$1.75608,000
2024-01-19$1.59$1.59445,600
2024-01-18$1.56$1.56551,500
2024-01-17$1.61$1.61742,600
2024-01-16$1.70$1.70467,800
2024-01-12$1.73$1.73646,500
2024-01-11$1.80$1.801,121,600
2024-01-10$1.96$1.96497,600
2024-01-09$1.95$1.95389,000
2024-01-08$2.05$2.05621,600
2024-01-05$1.87$1.87385,200
2024-01-04$1.88$1.88590,000
2024-01-03$1.89$1.89773,900
2024-01-02$2.03$2.03707,500