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
Jan 27, 2023	435,692,643
Jan 26, 2023	441,661,035
Jan 25, 2023	453,597,820
Jan 24, 2023	425,745,322
Jan 23, 2023	447,629,427
Jan 20, 2023	447,629,427
Jan 19, 2023	441,661,035
Jan 18, 2023	455,587,284
Jan 17, 2023	471,502,997
Jan 13, 2023	439,671,571
Jan 12, 2023	433,703,178
Jan 11, 2023	417,787,466
Jan 10, 2023	391,924,432
Jan 9, 2023	372,029,791
Jan 6, 2023	342,187,829
Jan 5, 2023	346,166,757
Jan 4, 2023	376,008,719
Jan 3, 2023	366,061,398
Dec 30, 2022	364,071,934
Dec 29, 2022	362,082,470
Dec 28, 2022	366,061,398
Dec 27, 2022	376,008,719
Dec 23, 2022	411,819,073
Dec 22, 2022	415,798,001
Dec 21, 2022	399,882,288
Dec 20, 2022	372,029,791
Dec 19, 2022	372,029,791
Dec 16, 2022	387,945,504
Dec 15, 2022	427,734,786
Dec 14, 2022	435,692,643
Dec 13, 2022	443,650,499
Dec 12, 2022	443,650,499
Dec 9, 2022	445,639,963
Dec 8, 2022	477,471,389
Dec 7, 2022	459,566,212
Dec 6, 2022	457,576,748
Dec 5, 2022	469,513,533
Dec 2, 2022	495,376,566
Dec 1, 2022	497,366,030
Nov 30, 2022	473,492,461
Nov 29, 2022	477,471,389
Nov 28, 2022	513,281,743
Nov 25, 2022	537,155,313
Nov 24, 2022	523,229,064
Nov 23, 2022	523,229,064
Nov 22, 2022	529,197,456
Nov 21, 2022	572,965,667
Nov 18, 2022	600,818,165
Nov 17, 2022	600,818,165
Nov 16, 2022	598,828,701
Nov 15, 2022	622,702,270
Nov 14, 2022	614,744,414
Nov 11, 2022	630,660,126
Nov 10, 2022	565,007,810
Nov 9, 2022	477,471,389
Nov 8, 2022	513,281,743
Nov 7, 2022	503,334,423
Nov 4, 2022	497,366,030
Nov 3, 2022	507,313,351
Nov 2, 2022	570,976,203
Nov 1, 2022	590,870,844
Oct 31, 2022	602,807,629
Oct 28, 2022	610,765,485
Oct 27, 2022	600,818,165
Oct 26, 2022	608,776,021
Oct 25, 2022	596,839,236
Oct 24, 2022	523,229,064
Oct 21, 2022	527,207,992
Oct 20, 2022	509,302,815
Oct 19, 2022	507,313,351
Oct 18, 2022	553,071,026
Oct 17, 2022	553,071,026
Oct 14, 2022	521,239,600
Oct 13, 2022	535,165,849
Oct 12, 2022	535,165,849
Oct 11, 2022	548,097,365
Oct 10, 2022	561,028,882
Oct 8, 2022	566,997,275
Oct 7, 2022	566,997,275
Oct 6, 2022	628,670,662
Oct 5, 2022	598,828,701
Oct 4, 2022	650,554,768
Oct 3, 2022	549,092,098
Sep 30, 2022	547,102,633
Sep 29, 2022	543,123,705
Sep 28, 2022	565,007,810
Sep 27, 2022	525,218,528
Sep 26, 2022	517,260,672
Sep 23, 2022	527,207,992
Sep 22, 2022	549,092,098
Sep 21, 2022	561,028,882
Sep 20, 2022	582,912,988
Sep 19, 2022	572,965,667
Sep 17, 2022	582,912,988
Sep 16, 2022	582,912,988
Sep 15, 2022	610,765,485
Sep 14, 2022	628,670,662
Sep 13, 2022	626,681,198
Sep 12, 2022	694,322,978
Sep 9, 2022	656,523,160