Platform Features
Platform Features
Features
Investment Products
Private Wealth Management
Trading Tools
Market Data Services
Analysis Tools
News Services
For Developers
Account Types
For Individuals
For Institutions
Café
More
Log in / Sign up
© 2026 Longbridge|
Terms of Service
Privacy Policy
Disclaimer
ASP Isotopes
ASPI
--
--
Start trading
Overview
Overview
News
News
Posts
Posts
Financials
Financials
Forecast
Forecast
Valuation
Valuation
Shareholders
Shareholders
Profile
Profile
All Shareholders
Institutional Holders
Insiders
All Shareholders
Shareholder Type
Public and others
43.46%
Institutions
43.11%
Individuals & Insiders
13.43%
Major Shareholders
Latest
Major Shareholders Latest
Shareholder
% Held
Shares Held
Change %
Shares Changed
Report Date
Paul Elliot Mann
Executive Chairman & CEO
6.25%
9.58M
0.21%
+1.98M
06/03/2026
BlackRock, Inc.
5.43%
8.33M
0.65%
+1.54M
03/31/2026
Encompass Capital Advisors LLC
4.51%
6.91M
4.06%
+6.41M
03/31/2026
Vanguard Capital Management, LLC
3.30%
5.06M
--
+5.06M
03/31/2026
AK Jensen Investment Management Limited
3.23%
4.96M
1.20%
+0
09/30/2025
Rovida Investment Management Limited
2.67%
4.10M
1.00%
+0
03/31/2026
Sergey Vasnetsov
Former Vice-Chairman of the Board
2.50%
3.84M
0.93%
+0
04/29/2025
UBS Asset Management AG
1.93%
2.95M
0.32%
+445.35K
03/31/2026
Geode Capital Management, LLC
1.79%
2.74M
0.35%
+356.40K
03/31/2026
Alyeska Investment Group, L.P.
1.76%
2.69M
2.63%
-2.20M
03/31/2026
State Street Global Advisors, Inc.
1.51%
2.32M
0.14%
+477.75K
03/31/2026
Robert Ainscow
Chief Operating Officer
1.49%
2.28M
0.29%
+769.06K
06/08/2026
Exchange Traded Concepts, LLC
1.42%
2.18M
0.17%
+783.24K
03/31/2026
AWM Investment Company Inc
1.39%
2.12M
0.52%
+0
03/31/2026
Morgan Stanley
1.01%
1.55M
0.50%
-135.92K
03/31/2026
Heather Kiessling
Chief Financial Officer
1.00%
1.53M
0.41%
+793.75K
07/01/2026
Susquehanna International Group, LLP
0.69%
1.06M
0.67%
-459.30K
03/31/2026
Duncan Moore
Independent Director
0.68%
1.04M
0.11%
+50.38K
04/29/2026
Vanguard Portfolio Management, LLC
0.64%
977.17K
--
+977.17K
03/31/2026
Diametric Capital, LP
0.62%
953.51K
0.04%
+216.20K
03/31/2026