DOSSIER · 13F Holders · Q2 2026Healthcare · Miscellaneous Chemical Products
ASPI

ASP ISOTOPES INC

207 institutions still hold ASP ISOTOPES INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 00218A105·Miscellaneous Chemical Products·207 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$363M
visible holders
Holders
207
filers reporting
Concentration
15.79%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

207 institutions reported ASPI in Q2 2026. BlackRock, Inc. leads at 15.8% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$57M9.2M0.00%Q2 2026
02
Encompass Capital Advisors LLC
CIK 0001541901
$41M6.6M1.45%Q2 2026
03
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$31M5.0M0.00%Q2 2026
04
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$28M4.6M0.00%Q2 2026
05
Rovida Investment Management Ltd
CIK 0002053064
$26M4.1M1.74%Q2 2026
06
CITADEL ADVISORS LLC
CIK 0001423053
$24M4.6M0.00%Q4 2025
07
UBS Group AG
CIK 0001610520
$23M3.8M0.00%Q2 2026
08
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$18M2.9M0.00%Q2 2026
09
Alyeska Investment Group, L.P.
CIK 0001453072
$18M2.8M0.05%Q2 2026
10
STATE STREET CORP
CIK 0000093751
$16M2.6M0.00%Q2 2026
11
EXCHANGE TRADED CONCEPTS, LLC
CIK 0001457320
$14M2.3M0.06%Q2 2026
12
AWM Investment Company, Inc.
CIK 0001535264
$10M1.6M0.85%Q2 2026
13
BNP Paribas Asset Management Holding S.A.
CIK 0001520354
$10M1.6M0.01%Q2 2026
14
PEAK6 LLC
CIK 0001389958
$9M1.4M0.02%Q2 2026
15
MORGAN STANLEY
CIK 0000895421
$7M1.2M0.00%Q2 2026
16
Vanguard Portfolio Management
CIK 0002100121· Index
$7M1.1M0.00%Q2 2026
17
WOLVERINE TRADING, LLC
CIK 0000927337
$6M612K0.00%Q3 2025
18
NORTHERN TRUST CORP
CIK 0000073124· Index
$6M1.0M0.00%Q2 2026
19
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$6M935K0.00%Q2 2026
20
BARCLAYS PLC
CIK 0000312069
$5M848K0.00%Q2 2026
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Insiders at ASP ISOTOPES INC
Ainscow RobertMoore DuncanKiessling HeatherRyan Robert John AndrewHunter Ralph L. JrGorley MichaelWider ToddMann Paul Elliot