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 — 2020

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2020-12-31$10.15$10.150
2020-12-30$10.15$10.15700
2020-12-29$10.13$10.1329,600
2020-12-28$10.40$10.409,900
2020-12-24$10.18$10.181,600
2020-12-23$10.15$10.152,000
2020-12-22$10.00$10.0022,400
2020-12-21$10.11$10.114,600
2020-12-18$10.00$10.000
2020-12-17$10.00$10.00100
2020-12-16$9.99$9.990
2020-12-15$9.99$9.990
2020-12-14$9.99$9.9916,900
2020-12-11$10.15$10.1534,900
2020-12-10$10.18$10.186,100
2020-12-09$10.18$10.1824,900
2020-12-08$10.18$10.1816,000
2020-12-07$10.24$10.249,000
2020-12-04$11.50$11.50900
2020-12-03$9.95$9.950
2020-12-02$9.95$9.950
2020-12-01$9.95$9.950
2020-11-30$9.95$9.953,700
2020-11-27$9.90$9.900
2020-11-25$9.90$9.900
2020-11-24$9.90$9.90600
2020-11-23$9.90$9.90300
2020-11-20$9.90$9.90500
2020-11-19$9.90$9.900
2020-11-18$9.90$9.90200
2020-11-17$9.90$9.90300
2020-11-16$9.90$9.90100
2020-11-13$9.88$9.88100