Security key
00218A105
- Type / Class
- Equity / Common Stock
- Shares outstanding
- 125,375,197
- Total 13F shares
- 52,913,307
- Share change
- +11,401,639
- Total reported value
- $508,847,148
- Put/Call ratio
- 70%
- Price per share
- $9.62
- Number of holders
- 157
- Value change
- +$110,653,479
- Number of buys
- 113
- Number of sells
- 49
Report period
Q3 2025
Institutions
157
Top holders
10
ASPI full security history
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:
Top shareholders of ASPI - ASP Isotopes Inc. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| AK Jensen Investment Management Ltd |
13D/G
3/4/5
|
10%+ Owner |
5.4%
|
4,955,261
|
$47,669,611 | +$2,373,350 | 30 Sep 2025 | |
| Donald George Ainscow |
3/4/5
|
EVP, Gen Counsel, Secretary |
0.4%
|
500,000
|
$5,380,000 | — | 01 Aug 2025 | |
| Alyeska Investment Group, L.P. |
13F
|
Company |
3.3%
|
4,179,934
|
$30,764,314 | — | 30 Jun 2025 | |
| BlackRock, Inc. |
13F
|
Company |
3.2%
|
4,028,715
|
$29,651,343 | — | 30 Jun 2025 | |
| AWM Investment Company, Inc. |
13F
|
Company |
3.1%
|
3,931,186
|
$28,933,529 | — | 30 Jun 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
2.6%
|
3,275,739
|
$24,109,438 | — | 30 Jun 2025 | |
| Capital Research Global Investors |
13F
|
Company |
2.3%
|
2,868,062
|
$21,108,936 | — | 30 Jun 2025 | |
| Philadelphia Financial Management of San Francisco, LLC |
13F
|
Company |
2.1%
|
2,670,211
|
$19,652,753 | — | 30 Jun 2025 | |
| Rovida Investment Management Ltd |
13F
|
Company |
1.8%
|
2,200,000
|
$16,148,000 | — | 30 Jun 2025 | |
| BNP Paribas Asset Management Holding S.A. |
13F
|
Company |
1.6%
|
1,965,484
|
$14,466,000 | — | 30 Jun 2025 | |
| UBS Group AG |
13F
|
Company |
1.1%
|
1,428,276
|
$10,512,111 | — | 30 Jun 2025 | |
| Telemark Asset Management, LLC |
13F
|
Company |
1.1%
|
1,425,000
|
$10,488,000 | — | 30 Jun 2025 | |
| DRIEHAUS CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.1%
|
1,405,414
|
$10,343,847 | — | 30 Jun 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.1%
|
1,348,072
|
$9,923,689 | — | 30 Jun 2025 | |
| EXCHANGE TRADED CONCEPTS, LLC |
13F
|
Company |
1%
|
1,303,414
|
$9,593,127 | — | 30 Jun 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.89%
|
1,114,200
|
$8,200,512 | — | 30 Jun 2025 | |
| GROUP ONE TRADING LLC |
13F
|
Company |
0.56%
|
706,788
|
$5,201,960 | — | 30 Jun 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.38%
|
471,219
|
$3,468,172 | — | 30 Jun 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.36%
|
451,329
|
$3,321,781 | — | 30 Jun 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.35%
|
433,288
|
$3,188,999 | — | 30 Jun 2025 | |
| GSA CAPITAL PARTNERS LLP |
13F
|
Company |
0.31%
|
384,326
|
$2,829,000 | — | 30 Jun 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.27%
|
342,912
|
$2,523,832 | — | 30 Jun 2025 | |
| TUDOR INVESTMENT CORP ET AL |
13F
|
Company |
0.27%
|
334,998
|
$2,465,585 | — | 30 Jun 2025 | |
| Diametric Capital, LP |
13F
|
Company |
0.21%
|
269,527
|
$1,983,718 | — | 30 Jun 2025 | |
| SIMPLEX TRADING, LLC |
13F
|
Company |
0.19%
|
240,150
|
$1,767,000 | — | 30 Jun 2025 | |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.18%
|
225,249
|
$1,657,833 | — | 30 Jun 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.17%
|
219,105
|
$1,612,613 | — | 30 Jun 2025 | |
| Rathbones Group PLC |
13F
|
Company |
0.17%
|
208,149
|
$1,531,976 | — | 30 Jun 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.14%
|
175,948
|
$1,294,976 | — | 30 Jun 2025 | |
| POLEN CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.14%
|
175,138
|
$1,289,016 | — | 30 Jun 2025 | |
| BANTAMAC CAPITAL, LLC |
13F
|
Company |
0.14%
|
175,138
|
$1,285,513 | — | 30 Jun 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.14%
|
174,928
|
$1,287,470 | — | 30 Jun 2025 | |
| Creative Planning |
13F
|
Company |
0.14%
|
172,770
|
$1,271,587 | — | 30 Jun 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.12%
|
153,154
|
$1,127,215 | — | 30 Jun 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.12%
|
149,434
|
$1,099,834 | — | 30 Jun 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.12%
|
145,203
|
$1,068,694 | — | 30 Jun 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.11%
|
132,556
|
$975,613 | — | 30 Jun 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.11%
|
131,997
|
$971,498 | — | 30 Jun 2025 | |
| OMERS ADMINISTRATION Corp |
13F
|
Company |
0.1%
|
121,800
|
$896,448 | — | 30 Jun 2025 | |
| PRELUDE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.08%
|
105,452
|
$776,127 | — | 30 Jun 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.08%
|
102,291
|
$752,862 | — | 30 Jun 2025 | |
| ALLIANCEBERNSTEIN L.P. |
13F
|
Company |
0.08%
|
98,870
|
$727,683 | — | 30 Jun 2025 | |
| Farther Finance Advisors, LLC |
13F
|
Company |
0.08%
|
95,999
|
$706,553 | — | 30 Jun 2025 | |
| Virtu Financial LLC |
13F
|
Company |
0.07%
|
93,287
|
$687,000 | — | 30 Jun 2025 | |
| Steward Partners Investment Advisory, LLC |
13F
|
Company |
0.07%
|
81,700
|
$601,312 | — | 30 Jun 2025 | |
| RHUMBLINE ADVISERS |
13F
|
Company |
0.06%
|
78,994
|
$581,388 | — | 30 Jun 2025 | |
| Informed Momentum Co LLC |
13F
|
Company |
0.06%
|
76,716
|
$564,630 | — | 30 Jun 2025 | |
| IMC-Chicago, LLC |
13F
|
Company |
0.06%
|
75,277
|
$554,039 | — | 30 Jun 2025 | |
| Marex Group plc |
13F
|
Company |
0.06%
|
75,000
|
$552,000 | — | 30 Jun 2025 | |
| Verition Fund Management LLC |
13F
|
Company |
0.06%
|
70,259
|
$517,106 | — | 30 Jun 2025 |
Institutional Holders of ASP Isotopes Inc. - Common Stock (ASPI) as of Q3 2025
As of 30 Sep 2025,
ASP Isotopes Inc. - Common Stock (ASPI) was held by
157 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
52,913,307 shares.
The largest 10 holders included
BlackRock, Inc., VANGUARD GROUP INC, Rovida Investment Management Ltd, AWM Investment Company, Inc., Alyeska Investment Group, L.P., Capital Research Global Investors, GEODE CAPITAL MANAGEMENT, LLC, Philadelphia Financial Management of San Francisco, LLC, Driehaus Capital Management LLC, and STATE STREET CORP.
This page lists
157
institutional shareholders reporting positions in this security
for the Q3 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
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 Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.