Market Cap

$259.63M

Current · Retrieved: Oct 23, 2026 · USD

QSI Market Cap

Current$259.63MretrievedOct 23, 2026

QSI Market Cap ($1.97B → $259.63M · CAGR -28.9%)

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
Apr 3, 2024	366,061,399
Apr 2, 2024	358,103,542
Apr 1, 2024	368,050,863
Mar 28, 2024	391,924,432
Mar 27, 2024	376,008,719
Mar 26, 2024	352,135,150
Mar 25, 2024	354,124,614
Mar 22, 2024	356,114,078
Mar 21, 2024	377,998,183
Mar 20, 2024	377,998,183
Mar 19, 2024	376,008,719
Mar 18, 2024	379,987,647
Mar 15, 2024	344,177,293
Mar 14, 2024	352,135,150
Mar 13, 2024	362,082,470
Mar 12, 2024	372,029,791
Mar 11, 2024	391,924,432
Mar 8, 2024	443,650,499
Mar 7, 2024	415,798,002
Mar 6, 2024	320,303,724
Mar 5, 2024	320,303,724
Mar 4, 2024	368,050,863
Mar 1, 2024	368,050,863
Feb 29, 2024	332,240,508
Feb 28, 2024	346,166,757
Feb 27, 2024	352,135,150
Feb 26, 2024	334,229,973
Feb 23, 2024	310,356,403
Feb 22, 2024	310,356,403
Feb 21, 2024	314,335,331
Feb 20, 2024	318,314,260
Feb 16, 2024	338,208,901
Feb 15, 2024	358,103,542
Feb 14, 2024	330,251,044
Feb 13, 2024	308,366,939
Feb 12, 2024	350,145,686
Feb 9, 2024	306,377,475
Feb 8, 2024	286,482,834
Feb 7, 2024	284,493,370
Feb 6, 2024	308,366,939
Feb 5, 2024	296,430,154
Feb 2, 2024	302,398,547
Feb 1, 2024	314,335,331
Jan 31, 2024	310,356,403
Jan 30, 2024	328,261,580
Jan 29, 2024	348,156,221
Jan 26, 2024	328,261,580
Jan 25, 2024	338,208,901
Jan 24, 2024	340,198,365
Jan 23, 2024	362,082,470
Jan 22, 2024	348,156,221
Jan 19, 2024	316,324,795
Jan 18, 2024	310,356,403
Jan 17, 2024	320,303,724
Jan 16, 2024	338,208,901
Jan 12, 2024	344,177,293
Jan 11, 2024	358,103,542
Jan 10, 2024	389,934,968
Jan 9, 2024	387,945,504
Jan 8, 2024	407,840,145
Jan 5, 2024	372,029,791
Jan 4, 2024	374,019,255
Jan 3, 2024	376,008,719
Jan 2, 2024	403,861,217
Dec 29, 2023	399,882,289
Dec 28, 2023	451,608,356
Dec 27, 2023	413,808,538
Dec 26, 2023	385,956,040
Dec 22, 2023	374,019,255
Dec 21, 2023	362,082,470
Dec 20, 2023	346,166,757
Dec 19, 2023	374,019,255
Dec 18, 2023	332,240,508
Dec 15, 2023	338,208,901
Dec 14, 2023	358,103,542
Dec 13, 2023	342,187,829
Dec 12, 2023	306,377,475
Dec 11, 2023	300,409,083
Dec 8, 2023	312,345,867
Dec 7, 2023	308,366,939
Dec 6, 2023	312,345,867
Dec 5, 2023	316,324,795
Dec 4, 2023	350,145,686
Dec 1, 2023	346,166,757
Nov 30, 2023	320,303,724
Nov 29, 2023	322,293,188
Nov 28, 2023	300,409,083
Nov 27, 2023	296,430,154
Nov 24, 2023	304,388,011
Nov 23, 2023	302,398,547
Nov 22, 2023	302,398,547
Nov 21, 2023	308,366,939
Nov 20, 2023	314,335,331
Nov 17, 2023	328,261,580
Nov 16, 2023	315,330,063
Nov 15, 2023	330,251,044
Nov 14, 2023	318,314,260
Nov 13, 2023	268,577,657
Nov 10, 2023	282,503,905
Nov 9, 2023	264,598,728