Quantum-Si incorporated QSI

Set alert

1.30 USD +0.04 (+3.17%)

At closeNov 3, 2026, 7:40 PM EST

1.28 -0.02 -1.83%

After hours · Nov 3, 7:40 PM ET

1.24 Day range 1.34

0.69 52-week range 1.95

Held by insiders 19.85%

Held by institutions 36.00%

Float held by institutions 44.92%

Institutions 135

Top institutional holders
Holder	% held	Shares	Value	Reported
ARK Investment Management, LLC	9.65%	11,842,609	15.51M	Sep 29, 2024
Sumitomo Mitsui Trust Holdings, Inc.	6.15%	7,547,912	9.89M	Sep 29, 2024
Nikko Asset Management Americas, Inc.	6.13%	7,527,912	9.86M	Sep 29, 2024
Blackrock Inc.	5.62%	6,900,127	9.04M	Sep 29, 2024
Vanguard Group Inc	4.10%	5,037,258	6.60M	Sep 29, 2024
Geode Capital Management, LLC	1.89%	2,316,921	3.04M	Sep 29, 2024

Top mutual fund holders
Holder	% held	Shares	Value	Reported
ARK ETF Tr-ARK Genomic Revolution ETF	9.36%	11,497,793	15.06M	Oct 30, 2024
Vanguard Total Stock Market Index Fund	2.46%	3,017,586	3.95M	Sep 29, 2024
iShares Russell 2000 ETF	1.99%	2,441,722	3.20M	Oct 30, 2024
Vanguard Extended Market Index Fund	1.04%	1,276,774	1.67M	Sep 29, 2024
Fidelity Small Cap Index Fund	0.84%	1,027,584	1.35M	Aug 30, 2024
iShares Russell 2000 Value ETF	0.83%	1,023,701	1.34M	Oct 30, 2024

QSI insiders
Insider	Relation	Latest transaction	Date	Shares held
BENNETT TODD C	Officer	Stock Award(Grant)	Sep 16, 2024	510,152
DOWDY PAULA	Director	Stock Award(Grant)	Mar 21, 2024	159,217
HAWKINS JEFFREY ALAN	Chief Executive Officer	Purchase	Aug 8, 2024	1,003,760
JAFRI AMIR	Director	Stock Award(Grant)	Sep 24, 2023	115,942
JOHNSTON GRACE	Officer	Sale	Jun 23, 2024	295,940
KENNY JOHN P	Director	Stock Award(Grant)	May 21, 2023	114,285

Held by funds