Asp IsotopesASPI
13F holders, Q2 2026 (June 30)185holders +8
37new positions
28sold out
3famous investors
$6.21avg. 13F price*
At the end of Q2 2026, 185 institutions reported holding Asp Isotopes Inc. (ASPI) in their 13F filings, up 8 from Q1 2026. 37 opened new positions and 28 sold out. The largest holders were BlackRock, Inc. ($57.3M), Encompass Capital Advisors LLC ($40.8M) and Vanguard Capital Management LLC ($31.0M). 3 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Steve Cohen (0.0% of Point72 Asset Management's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Asp Isotopes Inc.
- CUSIP
- 00218A105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 37 | $17.1M |
| Exits | 28 | $11.0M |
All 13F filers, Q1 2026 → Q2 2026: 8,889,482 shares bought and 7,291,324 shares sold, net +1,598,158 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 185 holders
| BlackRock, Inc. | 0.00% | Add +10.7% | 9,217,198 | $57.3M |
| Encompass Capital Advisors LLC | 1.76% | Reduce -5.1% | 6,561,754 | $40.8M |
| Vanguard Capital Management LLC | 0.00% | Reduce -1.5% | 4,982,953 | $31.0M |
| Rovida Investment Management Ltd | 1.74% | No change | 4,100,000 | $25.5M |
| UBS Group AG | 0.00% | Add +14.3% | 3,247,633 | $20.2M |
| Geode Capital Management, LLC | 0.00% | Add +7.5% | 2,945,901 | $18.3M |
| Alyeska Investment Group, L.P. | 0.05% | Add +5.6% | 2,843,503 | $17.7M |
| State Street Corp. | 0.00% | Add +11.8% | 2,595,573 | $16.1M |
| Exchange Traded Concepts, LLC | 0.07% | Add +3.3% | 2,255,509 | $14.0M |
| AWM Investment Company, Inc. | 0.85% | Reduce -25.6% | 1,581,490 | $9.8M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.01% | Add +77.7% | 1,577,016 | $9.8M |
| Philadelphia Financial Management of San Francisco, LLC | 2.29% | Add +107.2% | 1,343,007 | $8.4M |
| Morgan Stanley | 0.00% | Reduce -26.3% | 1,162,320 | $7.2M |
| Vanguard Portfolio Management LLC | 0.00% | Add +14.2% | 1,115,391 | $6.9M |
| Northern Trust Corp. | 0.00% | Add +7.4% | 1,007,214 | $6.3M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +4.3% | 935,352 | $5.8M |
| Barclays PLC | 0.00% | Reduce -16.3% | 847,781 | $5.3M |
| Marshall Wace, LLP | 0.00% | New | 835,656 | $5.2M |
| Man Group plc | 0.01% | New | 828,377 | $5.2M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +4.7% | 788,561 | $4.9M |
| Pacer Advisors, Inc. | 0.01% | Add +45.9% | 734,960 | $4.6M |
| Bank of America Corp. | 0.00% | Add +319.6% | 709,057 | $4.4M |
| Susquehanna International Group, LLP | 0.00% | Reduce -33.3% | 705,153 | $4.4M |
| Goldman Sachs Group Inc. | 0.00% | Add +9.4% | 576,276 | $3.6M |
| WIM INVESTMENT MANAGEMENT Ltd | 1.10% | Reduce -10.0% | 541,400 | $3.4M |
| Diametric Capital, LP | 0.36% | Reduce -43.5% | 538,517 | $3.3M |
| Nuveen, LLC | 0.00% | Add +137.9% | 493,421 | $3.1M |
| Group One Trading LLC | 0.08% | Reduce -23.0% | 458,383 | $2.9M |
| Shay Capital LLC | 0.28% | Reduce -3.8% | 413,000 | $2.6M |
| Rathbones Group PLC | 0.01% | Reduce -1.3% | 381,619 | $2.4M |
| Citadel Advisors | 0.00% | Reduce -53.4% | 357,591 | $2.2M |
| Bank of New York Mellon Corp | 0.00% | Add +23.5% | 356,872 | $2.2M |
| Caprock Group, LLC | 0.04% | Add +0.1% | 321,365 | $2.0M |
| HITE Hedge Asset Management LLC | 0.10% | Reduce -7.5% | 301,837 | $1.9M |
| Bank of Montreal | 0.00% | Add +13.3% | 262,560 | $1.6M |
| Saba Capital Management, L.P. | 0.05% | Reduce -26.9% | 261,470 | $1.6M |
| JPMorgan Chase & Co. | 0.00% | Reduce -11.8% | 241,054 | $1.5M |
| Headlands Technologies LLC | 0.16% | Add +219.6% | 240,197 | $1.5M |
| Empowered Funds, LLC | 0.01% | Add +21.1% | 225,089 | $1.4M |
| DNB Asset Management AS | 0.00% | Add +259.4% | 214,880 | $1.3M |
| Swiss National Bank | 0.00% | Add +2.2% | 214,700 | $1.3M |
| Invesco Ltd. | 0.00% | Add +260.2% | 203,976 | $1.3M |
| Purewater Capital LLC | 0.87% | Reduce -8.2% | 194,387 | $1.2M |
| Russell Investments Group, Ltd. | 0.00% | Add +24.8% | 181,776 | $1.1M |
| Chicago Partners Investment Group LLC | 0.02% | Reduce -29.0% | 265,459 | $1.1M |
| Stifel Financial Corp. | 0.00% | Add +37.8% | 166,034 | $1.0M |
| Aquatic Capital Management LLC | 0.04% | New | 163,978 | $1.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +43.3% | 161,219 | $1.0M |
| SBI Securities Co., Ltd. | 0.02% | Reduce -3.2% | 159,346 | $991K |
| Cetera Investment Advisers | 0.00% | Add +33.2% | 152,965 | $951K |
| Polen Capital Management LLC | 0.01% | Add +21.6% | 149,559 | $930K |
| Rhumbline Advisers | 0.00% | Add +20.1% | 141,284 | $879K |
| Squarepoint Ops LLC | 0.00% | Add +75.6% | 123,951 | $771K |
| Citigroup Inc. | 0.00% | Add +61.4% | 121,309 | $755K |
| California State Teachers Retirement System | 0.00% | Add +55.0% | 121,243 | $754K |
| Deutsche Bank AG | 0.00% | Add +28.5% | 120,367 | $749K |
| Point72 Asset Management | 0.00% | New | 120,159 | $747K |
| Wells Fargo & Company | 0.00% | Add +133.5% | 116,119 | $722K |
| Polymer Capital Management (US) LLC | 0.10% | New | 105,494 | $656K |
| Marex Group Ltd | 0.00% | Add +9.2% | 100,100 | $623K |
| Canal Insurance CO | 0.14% | No change | 100,000 | $622K |
| National Bank of Canada | 0.00% | Add +16.1% | 100,000 | $622K |
| T. Rowe Price Associates Inc. | 0.00% | Add +20.2% | 96,913 | $603K |
| WINTON GROUP Ltd | 0.02% | New | 94,512 | $588K |
| Osaic Holdings, Inc. | 0.00% | Add +66.5% | 89,876 | $559K |
| Legal & General Group Plc | 0.00% | Add +56.9% | 86,951 | $541K |
| FNY Investment Advisers, LLC | 0.18% | Reduce -7.5% | 80,100 | $498K |
| Alliancebernstein L.P. | 0.00% | Add +178.1% | 107,790 | $476K |
| Pekin Hardy Strauss, Inc. | 0.04% | Reduce -15.8% | 74,450 | $463K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | No change | 74,308 | $462K |
| Penn Capital Management Company, LLC | 0.03% | Reduce -10.2% | 70,757 | $440K |
| Sei Investments Co. | 0.00% | Reduce -53.0% | 69,796 | $434K |
| MetLife Investment Management, LLC | 0.00% | Add +9.7% | 69,727 | $434K |
| Fort Washington Investment Advisors Inc. | 0.00% | New | 67,136 | $418K |
| Prelude Capital Management, LLC | 0.03% | Reduce -56.7% | 66,505 | $414K |
| Farther Finance Advisors, LLC | 0.00% | Reduce -58.3% | 62,618 | $389K |
| MH & Associates Securities Management Corp. | 0.35% | Add +24.3% | 62,265 | $387K |
| Creative Planning | 0.00% | Add +34.1% | 55,779 | $347K |
| Kingsview Wealth Management, LLC | 0.00% | New | 54,102 | $337K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +0.6% | 53,638 | $334K |
| Bleakley Financial Group, LLC | 0.00% | New | 49,954 | $311K |
| American Century Companies Inc. | 0.00% | New | 48,021 | $299K |
| Vanguard Global Advisers, LLC | 0.00% | No change | 43,019 | $268K |
| Ninety One SA (Pty) Ltd | 0.01% | New | 40,489 | $252K |
| Brevan Howard Capital Management LP | 0.00% | Add +126.6% | 39,576 | $246K |
| Jupiter Topco LLC | 0.00% | — | 39,000 | $243K |
| PFG Investments, LLC | 0.01% | Reduce -74.8% | 38,400 | $239K |
| Royal Bank of Canada | 0.00% | Add +0.7% | 38,232 | $238K |
| Advisory Services Network, LLC | 0.00% | Reduce -15.1% | 34,162 | $212K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 33,888 | $211K |
| Sanctuary Advisors, LLC | 0.00% | Add +30.8% | 32,195 | $200K |
| KLP Kapitalforvaltning As | 0.00% | No change | 31,600 | $197K |
| Centiva Capital, LP | 0.01% | Reduce -13.7% | 31,526 | $196K |
| Quantinno Capital Management LP | 0.00% | Reduce -6.0% | 31,087 | $193K |
| CenterBook Partners LP | 0.01% | New | 30,907 | $192K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +0.5% | 30,656 | $191K |
| Intech Investment Management LLC | 0.00% | Add +15.9% | 30,655 | $191K |
| LPL Financial LLC | 0.00% | Reduce -31.9% | 30,084 | $187K |
| Valeo Financial Advisors, LLC | 0.00% | New | 30,000 | $187K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | New | 30,000 | $187K |
"% of holder's portfolio" is ASPI's weight in each manager's 13F, not the share of Asp Isotopes Inc. the manager owns.