Quantum-Si (QSI.US) Shareholders - Institutional Holders, Major Shareholders & Insiders | Longbridge

Shareholder Type

Public and others59.82%
Institutions22.52%
Individuals & Insiders17.32%
Private companies0.34%

Major Shareholders

Major Shareholders Latest
Shareholder
Jonathan RothbergFounder & Executive Director	15.37%	33.64M	0.00%	+0	08/26/2026
Vanguard Capital Management, LLC	3.97%	8.69M	0.22%	+555.73K	06/30/2026
ARK Investment Management LLC	3.27%	7.17M	0.11%	+288.84K	06/30/2026
BlackRock, Inc.	2.39%	5.23M	3.79%	-8.19M	06/30/2026
Amova Asset Management Co., Ltd.	1.78%	3.89M	0.25%	-506.44K	06/30/2026
Millennium Management LLC	1.43%	3.13M	1.43%	+3.13M	06/30/2026
UBS Asset Management AG	1.17%	2.56M	0.39%	+859.37K	06/30/2026
AQR Capital Management, LLC	1.04%	2.28M	0.01%	-10.95K	06/30/2026
Geode Capital Management, LLC	1.02%	2.24M	0.74%	-1.60M	06/30/2026
Jane Street Group, LLC	0.98%	2.14M	0.98%	+2.14M	06/30/2026
HighCape Partners Management, L.P.	0.55%	1.20M	0.79%	-1.70M	05/18/2026
Susquehanna International Group, LLP	0.51%	1.12M	0.16%	-347.82K	06/30/2026
State Street Investment Management	0.41%	890.74K	1.33%	-2.88M	06/30/2026
Charles KummethIndependent Chairman	0.39%	855.00K	<0.01%	+0	05/18/2026
Fosun International Holdings Ltd.	0.34%	743.94K	<0.01%	+0	06/30/2026
Jeffrey HawkinsPresident, CEO & Director	0.33%	726.69K	0.01%	+29.76K	09/22/2026
Todd BennettFormer Chief Commercial Officer	0.31%	681.52K	<0.01%	+0	09/23/2025
Christian LapointeGeneral Counsel & Corporate Secretary	0.26%	570.64K	0.02%	+45.91K	09/22/2026
Renaissance Technologies LLC	0.25%	553.87K	0.20%	+435.97K	06/30/2026
Vanguard Portfolio Management, LLC	0.23%	497.10K	0.47%	-1.02M	06/30/2026