DALLAS, TX
ASP ISOTOPES INC.ASPI— Latest position per institution from SEC 13F filings
15
Institutional holders
67.43M
Total shares held
404.34M
Estimated value
3.37M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
9.22M
Value
57.33M
Filed
Jun 30, 2026
ENCOMPASS CAPITAL ADVISORS LLC
CIK 1541901
Shares
6.56M
Value
40.81M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
6.41M
Value
34.27M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
4.98M
Value
30.99M
Filed
Jun 30, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
4.55M
Value
28.32M
Filed
Jun 30, 2026
ROVIDA INVESTMENT MANAGEMENT LTD
CIK 2053064
Shares
4.10M
Value
25.50M
Filed
Jun 30, 2026
UBS GROUP AG
CIK 1610520
Shares
3.75M
Value
23.35M
Filed
Jun 30, 2026
ARMISTICE CAPITAL, LLC
CIK 1601086
Shares
3.16M
Value
2.70M
Filed
Mar 31, 2023
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
2.95M
Value
18.33M
Filed
Jun 30, 2026
ALYESKA INVESTMENT GROUP, L.P.
CIK 1453072
Shares
2.84M
Value
17.69M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
2.60M
Value
16.14M
Filed
Jun 30, 2026
EXCHANGE TRADED CONCEPTS, LLC
CIK 1457320
Shares
2.26M
Value
14.03M
Filed
Jun 30, 2026
ROVIDA ADVISORS INC.
CIK 1653857
Shares
2.20M
Value
16.15M
Filed
Jun 30, 2025
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
2.14M
Value
6.55M
Filed
Jun 30, 2024
CAPITAL RESEARCH GLOBAL INVESTORS
CIK 1422848
Shares
2.04M
Value
19.66M
Filed
Sep 30, 2025
CITADEL ADVISORS LLC
CIK 1423053
Shares
1.71M
Value
10.65M
Filed
Jun 30, 2026
AWM INVESTMENT COMPANY, INC.
CIK 1535264
Shares
1.58M
Value
9.84M
Filed
Jun 30, 2026
BNP PARIBAS ASSET MANAGEMENT HOLDING S.A.
CIK 1520354
Shares
1.58M
Value
9.81M
Filed
Jun 30, 2026
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 938206
Shares
1.42M
Value
13.66M
Filed
Sep 30, 2025
PEAK6 LLC
CIK 1389958
Shares
1.37M
Value
8.54M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 9.22M | 57.33M | Jun 30, 2026 |
| 2 | ENCOMPASS CAPITAL ADVISORS LLC | 1541901 | 6.56M | 40.81M | Jun 30, 2026 |
| 3 | VANGUARD GROUP INC | 102909 | 6.41M | 34.27M | Dec 31, 2025 |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 4.98M | 30.99M | Jun 30, 2026 |
| 5 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 4.55M | 28.32M | Jun 30, 2026 |
| 6 | ROVIDA INVESTMENT MANAGEMENT LTD | 2053064 | 4.10M | 25.50M | Jun 30, 2026 |
| 7 | UBS GROUP AG | 1610520 | 3.75M | 23.35M | Jun 30, 2026 |
| 8 | ARMISTICE CAPITAL, LLC | 1601086 | 3.16M | 2.70M | Mar 31, 2023 |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 2.95M | 18.33M | Jun 30, 2026 |
| 10 | ALYESKA INVESTMENT GROUP, L.P. | 1453072 | 2.84M | 17.69M | Jun 30, 2026 |
| 11 | STATE STREET CORP | 93751 | 2.60M | 16.14M | Jun 30, 2026 |
| 12 | EXCHANGE TRADED CONCEPTS, LLC | 1457320 | 2.26M | 14.03M | Jun 30, 2026 |
| 13 | ROVIDA ADVISORS INC. | 1653857 | 2.20M | 16.15M | Jun 30, 2025 |
| 14 | BLACKROCK FINANCE, INC. | 1364742 | 2.14M | 6.55M | Jun 30, 2024 |
| 15 | CAPITAL RESEARCH GLOBAL INVESTORS | 1422848 | 2.04M | 19.66M | Sep 30, 2025 |
| 16 | CITADEL ADVISORS LLC | 1423053 | 1.71M | 10.65M | Jun 30, 2026 |
| 17 | AWM INVESTMENT COMPANY, INC. | 1535264 | 1.58M | 9.84M | Jun 30, 2026 |
| 18 | BNP PARIBAS ASSET MANAGEMENT HOLDING S.A. | 1520354 | 1.58M | 9.81M | Jun 30, 2026 |
| 19 | DRIEHAUS CAPITAL MANAGEMENT LLC | 938206 | 1.42M | 13.66M | Sep 30, 2025 |
| 20 | PEAK6 LLC | 1389958 | 1.37M | 8.54M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.