DALLAS, TX
ASP ISOTOPES INC.ASPI— Latest position per institution from SEC 13F filings
15
Institutional holders
68.15M
Total shares held
317.38M
Estimated value
3.41M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
8.33M
Value
36.81M
Filed
Mar 31, 2026
ENCOMPASS CAPITAL ADVISORS LLC
CIK 1541901
Shares
6.91M
Value
30.55M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
6.41M
Value
34.27M
Filed
Dec 31, 2025
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
5.33M
Value
23.57M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
5.06M
Value
22.37M
Filed
Mar 31, 2026
ROVIDA INVESTMENT MANAGEMENT LTD
CIK 2053064
Shares
4.10M
Value
18.08M
Filed
Mar 31, 2026
ARMISTICE CAPITAL, LLC
CIK 1601086
Shares
3.16M
Value
2.70M
Filed
Mar 31, 2023
UBS GROUP AG
CIK 1610520
Shares
2.99M
Value
13.22M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
2.74M
Value
12.12M
Filed
Mar 31, 2026
ALYESKA INVESTMENT GROUP, L.P.
CIK 1453072
Shares
2.69M
Value
11.90M
Filed
Mar 31, 2026
CITADEL ADVISORS LLC
CIK 1423053
Shares
2.64M
Value
11.68M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
2.32M
Value
10.26M
Filed
Mar 31, 2026
ROVIDA ADVISORS INC.
CIK 1653857
Shares
2.20M
Value
16.15M
Filed
Jun 30, 2025
EXCHANGE TRADED CONCEPTS, LLC
CIK 1457320
Shares
2.18M
Value
9.65M
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
2.14M
Value
6.55M
Filed
Jun 30, 2024
AWM INVESTMENT COMPANY, INC.
CIK 1535264
Shares
2.12M
Value
9.39M
Filed
Mar 31, 2026
CAPITAL RESEARCH GLOBAL INVESTORS
CIK 1422848
Shares
2.04M
Value
19.66M
Filed
Sep 30, 2025
PEAK6 LLC
CIK 1389958
Shares
1.77M
Value
7.81M
Filed
Mar 31, 2026
MORGAN STANLEY
CIK 895421
Shares
1.58M
Value
6.97M
Filed
Mar 31, 2026
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 938206
Shares
1.42M
Value
13.66M
Filed
Sep 30, 2025
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 8.33M | 36.81M | Mar 31, 2026 |
| 2 | ENCOMPASS CAPITAL ADVISORS LLC | 1541901 | 6.91M | 30.55M | Mar 31, 2026 |
| 3 | VANGUARD GROUP INC | 102909 | 6.41M | 34.27M | Dec 31, 2025 |
| 4 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 5.33M | 23.57M | Mar 31, 2026 |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 5.06M | 22.37M | Mar 31, 2026 |
| 6 | ROVIDA INVESTMENT MANAGEMENT LTD | 2053064 | 4.10M | 18.08M | Mar 31, 2026 |
| 7 | ARMISTICE CAPITAL, LLC | 1601086 | 3.16M | 2.70M | Mar 31, 2023 |
| 8 | UBS GROUP AG | 1610520 | 2.99M | 13.22M | Mar 31, 2026 |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 2.74M | 12.12M | Mar 31, 2026 |
| 10 | ALYESKA INVESTMENT GROUP, L.P. | 1453072 | 2.69M | 11.90M | Mar 31, 2026 |
| 11 | CITADEL ADVISORS LLC | 1423053 | 2.64M | 11.68M | Mar 31, 2026 |
| 12 | STATE STREET CORP | 93751 | 2.32M | 10.26M | Mar 31, 2026 |
| 13 | ROVIDA ADVISORS INC. | 1653857 | 2.20M | 16.15M | Jun 30, 2025 |
| 14 | EXCHANGE TRADED CONCEPTS, LLC | 1457320 | 2.18M | 9.65M | Mar 31, 2026 |
| 15 | BLACKROCK FINANCE, INC. | 1364742 | 2.14M | 6.55M | Jun 30, 2024 |
| 16 | AWM INVESTMENT COMPANY, INC. | 1535264 | 2.12M | 9.39M | Mar 31, 2026 |
| 17 | CAPITAL RESEARCH GLOBAL INVESTORS | 1422848 | 2.04M | 19.66M | Sep 30, 2025 |
| 18 | PEAK6 LLC | 1389958 | 1.77M | 7.81M | Mar 31, 2026 |
| 19 | MORGAN STANLEY | 895421 | 1.58M | 6.97M | Mar 31, 2026 |
| 20 | DRIEHAUS CAPITAL MANAGEMENT LLC | 938206 | 1.42M | 13.66M | Sep 30, 2025 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.