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

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Shareholder Type

Public and others61.79%
Institutions20.50%
Individuals & Insiders17.37%
Private companies0.34%

Major Shareholders

Major Shareholders Latest
Shareholder
Jonathan RothbergFounder & Executive Director	15.45%	33.64M	0.04%	+0	05/18/2026
Vanguard Capital Management, LLC	3.99%	8.69M	0.24%	+555.73K	06/30/2026
ARK Investment Management LLC	3.16%	6.88M	0.10%	-142.67K	03/31/2026
BlackRock, Inc.	2.40%	5.23M	3.78%	-8.19M	06/30/2026
Amova Asset Management Co., Ltd.	1.78%	3.89M	0.24%	-506.44K	06/30/2026
UBS Asset Management AG	1.18%	2.56M	0.39%	+859.37K	06/30/2026
AQR Capital Management, LLC	1.05%	2.29M	1.01%	+2.21M	03/31/2026
Geode Capital Management, LLC	1.03%	2.24M	0.74%	-1.60M	06/30/2026
Susquehanna International Group, LLP	0.67%	1.46M	0.41%	-863.22K	03/31/2026
HighCape Partners Management, L.P.	0.55%	1.20M	<0.01%	+0	05/18/2026
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	0.32%	696.93K	0.13%	+286.23K	06/23/2026
Todd BennettFormer Chief Commercial Officer	0.31%	681.52K	<0.01%	+0	09/23/2025
Renaissance Technologies LLC	0.25%	553.87K	0.20%	+435.97K	06/30/2026
Christian LapointeGeneral Counsel & Corporate Secretary	0.24%	524.73K	0.02%	+44.84K	06/23/2026
Vanguard Portfolio Management, LLC	0.23%	497.10K	0.47%	-1.02M	06/30/2026
Charles Schwab Investment Management, Inc.	0.21%	457.57K	<0.01%	+0	06/30/2026
Northern Trust Global Investments	0.21%	450.53K	0.37%	-810.17K	06/30/2026