Security key
00218A105
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 52,913,307
- Total 13F value
- $508,847,148
- Share change
- +11,401,639
- Put/Call ratio
- 70%
- SEC-reported price per share
- $9.62
- Number of holders
- 157
- Value change
- +$110,653,479
- Number of buys
- 113
- Number of sells
- 49
- Shares outstanding
- 125,375,197
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
157
Top holders
10
ASPI full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2025
Previous quarter: Q2 2025
ASP Isotopes Inc. SEC filings
ASP Isotopes Inc. company facts
ASP Isotopes Inc. 13D/G history
Broader feeds
Reporting periods
Holder history for CUSIP 00218A105
Recent filing periods:
Ownership snapshot
Top reported holders of ASPI - ASP Isotopes Inc. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
AK Jensen Investment Mana...
Disclosed value leader
AK Jensen Investment Mana...
Comparable rows
15/15
Latest evidence
30 Sep 2025
13D/G
3/4/5
13F
Lead comparable stake: 5.4%
13D/G row: AK Jensen Investment Management Ltd
Showing 1-6 of 15 holder rows.
Quick read
AK Jensen Investment Management Ltd leads the comparable SEC ownership view at 5.4%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens AK Jensen Investment Management Ltd's linked filing trail.
Comparable ownership
Top 5
AK Jensen Investment Management Ltd
5.4%
Alyeska Investment Group, L.P.
3.3%
BlackRock, Inc.
3.2%
AWM Investment Company, Inc.
3.1%
VANGUARD GROUP INC
2.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| AK Jensen Investment Management Ltd |
13D/G
3/4/5
10%+ Owner
|
5.4%
|
$47,669,611
4,955,261 shares
|
+$2,373,350 | 30 Sep 2025 |
| Alyeska Investment Group, L.P. |
13F
Company
|
3.3%
|
$30,764,314
4,179,934 shares
|
— | 30 Jun 2025 |
| BlackRock, Inc. |
13F
Company
|
3.2%
|
$29,651,343
4,028,715 shares
|
— | 30 Jun 2025 |
| AWM Investment Company, Inc. |
13F
Company
|
3.1%
|
$28,933,529
3,931,186 shares
|
— | 30 Jun 2025 |
| VANGUARD GROUP INC |
13F
Company
|
2.6%
|
$24,109,438
3,275,739 shares
|
— | 30 Jun 2025 |
| Capital Research Global Investors |
13F
Company
|
2.3%
|
$21,108,936
2,868,062 shares
|
— | 30 Jun 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
157
Shares
52,913,307
Rows available
157
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
128
Q3 2025 holders
157
Holder diff
29
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend