Market Cap

$278.52M

Current · Retrieved: Oct 24, 2026 · USD

QSI Market Cap

Current$278.52MretrievedOct 24, 2026

QSI Market Cap ($1.97B → $278.52M · CAGR -28.0%)

Latest values, visible window

High-resolution chart · PNG

QSI market cap history

Daily history. Dates identify market observations.

Quantum Si Inc Class A Market Cap — Daily history
Date	Market Cap
Jun 20, 2023	286,482,833
Jun 19, 2023	290,461,762
Jun 16, 2023	290,461,762
Jun 15, 2023	318,314,259
Jun 14, 2023	320,303,724
Jun 13, 2023	334,229,972
Jun 12, 2023	320,303,724
Jun 9, 2023	318,314,259
Jun 8, 2023	336,219,437
Jun 7, 2023	352,135,149
Jun 6, 2023	364,071,934
Jun 5, 2023	330,251,044
Jun 2, 2023	336,219,437
Jun 1, 2023	306,377,475
May 31, 2023	300,409,082
May 30, 2023	316,324,795
May 26, 2023	324,282,652
May 25, 2023	312,345,867
May 24, 2023	332,240,508
May 23, 2023	342,187,829
May 22, 2023	348,156,221
May 19, 2023	302,398,546
May 18, 2023	288,472,298
May 17, 2023	286,482,833
May 16, 2023	274,546,049
May 15, 2023	282,503,905
May 12, 2023	280,514,441
May 11, 2023	306,377,475
May 10, 2023	324,282,652
May 9, 2023	282,503,905
May 8, 2023	286,482,833
May 5, 2023	288,472,298
May 4, 2023	280,514,441
May 3, 2023	290,461,762
May 2, 2023	282,503,905
May 1, 2023	290,461,762
Apr 28, 2023	292,451,226
Apr 27, 2023	292,451,226
Apr 26, 2023	304,388,011
Apr 25, 2023	328,261,580
Apr 24, 2023	328,261,580
Apr 21, 2023	318,314,259
Apr 20, 2023	314,335,331
Apr 19, 2023	306,377,475
Apr 18, 2023	302,398,546
Apr 17, 2023	306,377,475
Apr 14, 2023	302,398,546
Apr 13, 2023	306,377,475
Apr 12, 2023	296,430,154
Apr 11, 2023	320,303,724
Apr 10, 2023	308,366,939
Apr 6, 2023	314,335,331
Apr 5, 2023	310,356,403
Apr 4, 2023	320,303,724
Apr 3, 2023	344,177,293
Mar 31, 2023	350,145,685
Mar 30, 2023	328,261,580
Mar 29, 2023	330,251,044
Mar 28, 2023	318,314,259
Mar 27, 2023	328,261,580
Mar 24, 2023	318,314,259
Mar 23, 2023	316,324,795
Mar 22, 2023	328,261,580
Mar 21, 2023	348,156,221
Mar 20, 2023	340,198,365
Mar 17, 2023	344,177,293
Mar 16, 2023	352,135,149
Mar 15, 2023	352,135,149
Mar 14, 2023	354,124,614
Mar 13, 2023	334,229,972
Mar 10, 2023	316,324,795
Mar 9, 2023	336,219,437
Mar 8, 2023	356,114,078
Mar 7, 2023	376,008,719
Mar 6, 2023	374,019,255
Mar 3, 2023	429,724,250
Mar 2, 2023	385,956,040
Mar 1, 2023	356,114,078
Feb 28, 2023	362,082,470
Feb 27, 2023	360,093,006
Feb 24, 2023	366,061,398
Feb 23, 2023	381,977,111
Feb 22, 2023	381,977,111
Feb 21, 2023	383,966,575
Feb 17, 2023	403,861,217
Feb 16, 2023	401,871,753
Feb 15, 2023	429,724,250
Feb 14, 2023	417,787,466
Feb 13, 2023	411,819,073
Feb 10, 2023	423,755,858
Feb 9, 2023	429,724,250
Feb 8, 2023	453,597,820
Feb 7, 2023	471,502,997
Feb 6, 2023	469,513,533
Feb 3, 2023	487,418,710
Feb 2, 2023	513,281,743
Feb 1, 2023	431,713,714
Jan 31, 2023	441,661,035
Jan 30, 2023	427,734,786
Jan 27, 2023	435,692,643