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 — 2022

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2022-12-30$1.83$1.831,000,100
2022-12-29$1.82$1.821,402,100
2022-12-28$1.84$1.84960,300
2022-12-27$1.89$1.89476,400
2022-12-23$2.07$2.07511,100
2022-12-22$2.09$2.09538,000
2022-12-21$2.01$2.01569,500
2022-12-20$1.87$1.871,033,700
2022-12-19$1.87$1.871,005,700
2022-12-16$1.95$1.952,499,900
2022-12-15$2.15$2.15671,200
2022-12-14$2.19$2.19603,800
2022-12-13$2.23$2.23897,300
2022-12-12$2.23$2.23595,600
2022-12-09$2.24$2.24437,800
2022-12-08$2.40$2.40485,100
2022-12-07$2.31$2.31461,500
2022-12-06$2.30$2.30475,600
2022-12-05$2.36$2.36617,000
2022-12-02$2.49$2.49555,900
2022-12-01$2.50$2.50710,500
2022-11-30$2.38$2.381,535,700
2022-11-29$2.40$2.401,003,700
2022-11-28$2.58$2.582,691,400
2022-11-25$2.70$2.70102,000
2022-11-23$2.63$2.63357,700
2022-11-22$2.66$2.66697,900
2022-11-21$2.88$2.88922,200
2022-11-18$3.02$3.02299,400
2022-11-17$3.02$3.02376,800
2022-11-16$3.01$3.01348,700
2022-11-15$3.13$3.13657,400
2022-11-14$3.09$3.09485,000
2022-11-11$3.17$3.171,608,500
2022-11-10$2.84$2.841,022,800
2022-11-09$2.40$2.40515,200
2022-11-08$2.58$2.58610,700
2022-11-07$2.53$2.53720,200
2022-11-04$2.50$2.50557,800
2022-11-03$2.55$2.552,704,800
2022-11-02$2.87$2.87627,800
2022-11-01$2.97$2.97494,800
2022-10-31$3.03$3.03279,600
2022-10-28$3.07$3.07553,300
2022-10-27$3.02$3.02590,600
2022-10-26$3.06$3.06424,500
2022-10-25$3.00$3.00532,000
2022-10-24$2.63$2.63377,900
2022-10-21$2.65$2.65731,900
2022-10-20$2.56$2.56339,700
2022-10-19$2.55$2.55520,200
2022-10-18$2.78$2.78363,700
2022-10-17$2.78$2.78514,400
2022-10-14$2.62$2.62464,900
2022-10-13$2.69$2.69671,700
2022-10-12$2.69$2.69404,700
2022-10-11$2.76$2.76341,100
2022-10-10$2.82$2.82221,500
2022-10-07$2.85$2.85403,400
2022-10-06$3.16$3.16413,400
2022-10-05$3.01$3.01901,200
2022-10-04$3.27$3.271,945,800
2022-10-03$2.76$2.76267,000
2022-09-30$2.75$2.75410,300
2022-09-29$2.73$2.73537,400
2022-09-28$2.84$2.84462,300
2022-09-27$2.64$2.64243,600
2022-09-26$2.60$2.60479,700
2022-09-23$2.65$2.65425,400
2022-09-22$2.76$2.76578,800
2022-09-21$2.82$2.82360,300
2022-09-20$2.93$2.93368,900
2022-09-19$2.88$2.88390,500
2022-09-16$2.93$2.93727,000
2022-09-15$3.07$3.07414,500
2022-09-14$3.16$3.16610,600
2022-09-13$3.15$3.15484,400
2022-09-12$3.49$3.49333,200
2022-09-09$3.30$3.30244,600
2022-09-08$3.28$3.28229,600
2022-09-07$3.27$3.27244,000
2022-09-06$3.05$3.05292,700
2022-09-02$3.06$3.06345,300
2022-09-01$3.19$3.19229,900
2022-08-31$3.12$3.12313,900
2022-08-30$3.12$3.12304,600
2022-08-29$3.23$3.23285,400
2022-08-26$3.22$3.22409,500
2022-08-25$3.44$3.44300,000
2022-08-24$3.42$3.42255,200
2022-08-23$3.36$3.36244,500
2022-08-22$3.35$3.35451,000
2022-08-19$3.53$3.53389,900
2022-08-18$3.82$3.82381,100
2022-08-17$3.84$3.84435,800
2022-08-16$4.08$4.08491,800
2022-08-15$4.35$4.35384,300
2022-08-12$4.19$4.19373,800
2022-08-11$4.01$4.01785,900
2022-08-10$4.06$4.06603,900
2022-08-09$3.59$3.59761,700
2022-08-08$3.96$3.962,093,600
2022-08-05$3.82$3.82728,200
2022-08-04$3.60$3.60408,400
2022-08-03$3.48$3.48779,700
2022-08-02$3.27$3.27395,000
2022-08-01$3.21$3.21357,800
2022-07-29$3.25$3.25467,000
2022-07-28$3.23$3.23285,500
2022-07-27$3.20$3.20430,900
2022-07-26$2.98$2.98361,400
2022-07-25$2.95$2.95385,900
2022-07-22$3.03$3.03729,300
2022-07-21$3.37$3.37693,900
2022-07-20$3.36$3.36993,800
2022-07-19$3.00$3.00721,800
2022-07-18$2.78$2.78444,400
2022-07-15$2.89$2.89461,000
2022-07-14$2.80$2.80336,100
2022-07-13$2.92$2.92477,200
2022-07-12$2.78$2.78465,200
2022-07-11$2.71$2.71545,100
2022-07-08$2.92$2.92612,900
2022-07-07$2.95$2.951,448,600
2022-07-06$2.74$2.74942,400
2022-07-05$2.69$2.691,890,300
2022-07-01$2.40$2.401,041,700
2022-06-30$2.32$2.32823,600
2022-06-29$2.41$2.411,278,100
2022-06-28$2.34$2.343,053,200
2022-06-27$2.43$2.432,594,900
2022-06-24$2.89$2.8913,413,100
2022-06-23$3.02$3.021,872,500
2022-06-22$2.97$2.971,297,800
2022-06-21$2.78$2.781,774,400
2022-06-17$2.95$2.953,358,300
2022-06-16$3.00$3.002,046,600
2022-06-15$3.36$3.36971,400
2022-06-14$3.12$3.12679,100
2022-06-13$2.97$2.97853,900
2022-06-10$3.43$3.43411,700
2022-06-09$3.69$3.69659,000
2022-06-08$4.08$4.08598,200
2022-06-07$3.78$3.78987,900
2022-06-06$4.10$4.10779,100
2022-06-03$4.38$4.38865,200
2022-06-02$4.45$4.45732,600
2022-06-01$4.28$4.28639,200
2022-05-31$4.25$4.25638,700
2022-05-27$4.24$4.24802,200
2022-05-26$3.90$3.90773,800
2022-05-25$3.95$3.95370,500
2022-05-24$3.89$3.89784,100
2022-05-23$3.95$3.95537,000
2022-05-20$3.92$3.92565,700
2022-05-19$3.85$3.85493,500
2022-05-18$3.69$3.69677,900
2022-05-17$3.74$3.74759,200
2022-05-16$3.46$3.46703,000
2022-05-13$3.60$3.601,351,300
2022-05-12$3.22$3.221,170,200
2022-05-11$3.06$3.061,003,100
2022-05-10$3.37$3.371,178,900
2022-05-09$3.49$3.49793,800
2022-05-06$3.96$3.96690,500
2022-05-05$4.17$4.17480,700
2022-05-04$4.52$4.52799,900
2022-05-03$4.47$4.47520,100
2022-05-02$4.54$4.54548,300
2022-04-29$4.38$4.38433,200
2022-04-28$4.39$4.39972,700
2022-04-27$4.31$4.31495,700
2022-04-26$4.28$4.28497,100
2022-04-25$4.54$4.54708,600
2022-04-22$4.16$4.161,432,600
2022-04-21$4.27$4.27954,200
2022-04-20$4.40$4.40561,800
2022-04-19$4.31$4.31631,300
2022-04-18$4.12$4.12542,700
2022-04-14$4.23$4.23673,300
2022-04-13$4.29$4.29942,600
2022-04-12$4.28$4.28886,600
2022-04-11$4.16$4.16569,400
2022-04-08$4.07$4.07721,000
2022-04-07$4.35$4.35517,400
2022-04-06$4.35$4.35838,200
2022-04-05$4.79$4.79539,900
2022-04-04$4.88$4.88484,500
2022-04-01$4.90$4.90644,200
2022-03-31$4.68$4.68933,400
2022-03-30$5.00$5.00737,700
2022-03-29$5.24$5.241,121,400
2022-03-28$4.60$4.60455,500
2022-03-25$4.67$4.67528,700
2022-03-24$4.69$4.69926,900
2022-03-23$4.87$4.87493,100
2022-03-22$4.98$4.981,178,800
2022-03-21$4.56$4.561,098,100
2022-03-18$4.93$4.931,881,800
2022-03-17$4.84$4.842,457,200
2022-03-16$3.90$3.901,186,000
2022-03-15$3.86$3.86769,200
2022-03-14$3.86$3.861,901,800
2022-03-11$4.10$4.10922,600
2022-03-10$4.40$4.40841,100
2022-03-09$4.49$4.491,403,000
2022-03-08$4.02$4.021,067,900
2022-03-07$4.03$4.03918,100
2022-03-04$4.00$4.00759,100
2022-03-03$4.09$4.09580,100
2022-03-02$4.42$4.42845,400
2022-03-01$4.72$4.721,900,000
2022-02-28$4.16$4.161,348,400
2022-02-25$4.42$4.421,091,000
2022-02-24$4.46$4.461,144,100
2022-02-23$4.20$4.201,029,300
2022-02-22$4.06$4.062,295,700
2022-02-18$4.41$4.413,640,100
2022-02-17$3.95$3.95934,300
2022-02-16$4.22$4.22927,300
2022-02-15$4.06$4.062,076,500
2022-02-14$4.33$4.33658,800
2022-02-11$4.46$4.46512,700
2022-02-10$4.66$4.66989,700
2022-02-09$4.80$4.801,210,400
2022-02-08$4.30$4.30810,700
2022-02-07$4.30$4.30958,300
2022-02-04$4.43$4.431,561,000
2022-02-03$4.41$4.41846,900
2022-02-02$4.56$4.56779,600
2022-02-01$4.82$4.821,156,100
2022-01-31$4.79$4.791,782,100
2022-01-28$4.52$4.52944,300
2022-01-27$4.50$4.501,050,600
2022-01-26$4.99$4.991,253,800
2022-01-25$5.14$5.141,278,600
2022-01-24$5.16$5.163,061,700
2022-01-21$5.40$5.401,215,400
2022-01-20$5.60$5.601,505,600
2022-01-19$5.17$5.171,827,100
2022-01-18$5.38$5.381,049,400
2022-01-14$5.84$5.84780,600
2022-01-13$5.77$5.77736,800
2022-01-12$6.03$6.03720,800
2022-01-11$6.30$6.30971,700
2022-01-10$5.86$5.861,528,800
2022-01-07$6.45$6.45998,400
2022-01-06$6.59$6.591,166,500
2022-01-05$6.82$6.821,067,900
2022-01-04$7.68$7.68737,300
2022-01-03$8.22$8.22580,100