Market Cap

$228.79M

Current · Retrieved: Oct 23, 2026 · USD

QSI Market Cap

Current$228.79MretrievedOct 23, 2026

QSI Market Cap ($1.97B → $228.79M · CAGR -30.4%)

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 25, 2025	401,871,753
Jun 24, 2025	374,019,255
Jun 23, 2025	328,261,580
Jun 22, 2025	348,156,221
Jun 21, 2025	348,156,221
Jun 20, 2025	344,177,293
Jun 19, 2025	334,229,972
Jun 18, 2025	348,156,221
Jun 17, 2025	334,229,972
Jun 16, 2025	352,135,150
Jun 15, 2025	356,114,078
Jun 14, 2025	356,114,078
Jun 13, 2025	330,251,044
Jun 12, 2025	356,114,078
Jun 11, 2025	350,145,685
Jun 10, 2025	338,208,901
Jun 9, 2025	340,198,365
Jun 8, 2025	318,314,259
Jun 7, 2025	318,314,259
Jun 6, 2025	346,166,757
Jun 5, 2025	318,314,259
Jun 4, 2025	348,156,221
Jun 3, 2025	350,145,685
Jun 2, 2025	334,229,972
Jun 1, 2025	340,198,365
May 31, 2025	340,198,365
May 30, 2025	334,229,972
May 29, 2025	340,198,365
May 28, 2025	354,124,614
May 27, 2025	381,977,111
May 26, 2025	346,166,757
May 25, 2025	346,166,757
May 24, 2025	346,166,757
May 23, 2025	385,956,040
May 22, 2025	346,166,757
May 21, 2025	294,440,690
May 20, 2025	334,229,972
May 19, 2025	280,514,441
May 18, 2025	294,440,690
May 17, 2025	294,440,690
May 16, 2025	294,440,690
May 15, 2025	294,440,690
May 14, 2025	302,398,547
May 13, 2025	290,461,762
May 12, 2025	300,409,082
May 11, 2025	264,598,728
May 10, 2025	264,598,728
May 9, 2025	250,672,479
May 8, 2025	264,598,728
May 7, 2025	238,735,695
May 6, 2025	236,746,230
May 5, 2025	238,735,695
May 4, 2025	230,777,838
May 3, 2025	230,777,838
May 2, 2025	250,672,479
May 1, 2025	230,777,838
Apr 30, 2025	226,798,910
Apr 29, 2025	234,756,766
Apr 28, 2025	240,725,159
Apr 27, 2025	241,719,891
Apr 26, 2025	242,714,623
Apr 25, 2025	244,704,087
Apr 24, 2025	242,714,623
Apr 23, 2025	232,767,302
Apr 22, 2025	224,809,446
Apr 21, 2025	216,851,589
Apr 20, 2025	230,777,838
Apr 19, 2025	230,777,838
Apr 18, 2025	230,777,838
Apr 17, 2025	228,788,374
Apr 16, 2025	230,777,838
Apr 15, 2025	244,704,087
Apr 14, 2025	244,704,087
Apr 13, 2025	232,767,302
Apr 12, 2025	232,767,302
Apr 11, 2025	248,683,015
Apr 10, 2025	232,767,302
Apr 9, 2025	244,704,087
Apr 8, 2025	214,862,125
Apr 7, 2025	226,798,910
Apr 6, 2025	230,777,838
Apr 5, 2025	230,777,838
Apr 4, 2025	224,809,446
Apr 3, 2025	230,777,838
Apr 2, 2025	244,704,087
Apr 1, 2025	238,735,695
Mar 31, 2025	238,735,695
Mar 30, 2025	260,619,800
Mar 29, 2025	260,619,800
Mar 28, 2025	252,661,943
Mar 27, 2025	260,619,800
Mar 26, 2025	276,535,513
Mar 25, 2025	280,514,441
Mar 24, 2025	294,440,690
Mar 23, 2025	280,514,441
Mar 22, 2025	280,514,441
Mar 21, 2025	290,461,762
Mar 20, 2025	280,514,441
Mar 19, 2025	310,356,403
Mar 18, 2025	316,324,795