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 |
| Arizona State Retirement System | 0.00% | Add +1.1% | 29,529 | $184K |
| New York State Common Retirement Fund | 0.00% | No change | 29,200 | $182K |
| Neuberger Berman Group LLC | 0.00% | Add +45.8% | 29,119 | $181K |
| Integrated Wealth Concepts LLC | 0.00% | New | 28,316 | $176K |
| Vanguard Investments Australia, Ltd. | 0.00% | No change | 28,118 | $175K |
| Belpointe Asset Management LLC | 0.01% | Reduce -72.5% | 27,902 | $174K |
| Cresset Asset Management, LLC | 0.00% | Add +0.1% | 27,304 | $170K |
| XTX Topco Ltd | 0.00% | Add +124.7% | 26,789 | $167K |
| Fortitude Advisory Group L.L.C. | 0.06% | Add +1.0% | 26,286 | $163K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | No change | 23,600 | $147K |
| Allstate Corp. | 0.00% | New | 23,365 | $145K |
| Voya Investment Management LLC | 0.00% | Add +15.4% | 22,091 | $137K |
| Jane Street Group, LLC | 0.00% | Reduce -96.9% | 21,094 | $131K |
| MML Investors Services, LLC | 0.00% | New | 20,859 | $130K |
| Massar Capital Management, LP | 0.04% | Reduce -86.2% | 20,334 | $126K |
| Tocqueville Asset Management L.P. | 0.00% | No change | 20,000 | $124K |
| BNP Paribas Financial Markets | 0.00% | Reduce -30.7% | 19,156 | $119K |
| Pictet Asset Management Holding SA | 0.00% | Add +68.1% | 19,056 | $119K |
| Olympiad Research LP | 0.24% | New | 18,606 | $116K |
| Prudential Financial Inc. | 0.00% | Add +9.1% | 18,370 | $114K |
| Persistent Asset Partners Ltd | 0.04% | New | 18,363 | $114K |
| Fielder Capital Group LLC | 0.02% | No change | 18,083 | $112K |
| Capital Asset Advisory Services LLC | 0.00% | New | 18,045 | $112K |
| Brookwood Investment Group LLC | 0.01% | No change | 18,000 | $112K |
| FMR LLC | 0.00% | Add +24.1% | 17,825 | $111K |
| Amundi | 0.00% | New | 17,212 | $107K |
| Jain Global LLC | 0.00% | New | 17,105 | $106K |
| Guggenheim Capital LLC | 0.00% | Reduce -9.7% | 16,464 | $102K |
| Captrust Financial Advisors | 0.00% | Add +24.6% | 15,340 | $95K |
| ProShare Advisors LLC | 0.00% | Reduce -7.5% | 15,251 | $95K |
| Jump Financial, LLC | 0.00% | Reduce -42.5% | 15,102 | $94K |
| State of Wisconsin Investment Board | 0.00% | New | 14,383 | $89K |
| Blueshift Asset Management, LLC | 0.02% | New | 14,178 | $88K |
| Calton & Associates, Inc. | 0.01% | Add +33.3% | 14,000 | $87K |
| Simplex Trading, LLC | 0.00% | Reduce -77.8% | 13,664 | $85K |
| AQR Capital Management | 0.00% | Reduce -42.9% | 13,588 | $85K |
| Wealthfront Advisers LLC | 0.00% | Add +29.9% | 13,188 | $82K |
| Victory Capital Management Inc. | 0.00% | Add +2.0% | 13,059 | $81K |
| Axq Capital, LP | 0.01% | New | 12,922 | $80K |
| Silverberg Bernstein Capital Management LLC | 0.03% | New | 12,440 | $77K |
| KKM Financial LLC | 0.01% | New | 12,000 | $75K |
| Chicago Capital, LLC | 0.00% | No change | 12,000 | $75K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -28.9% | 11,784 | $73K |
| Axxcess Wealth Management, LLC | 0.00% | New | 11,715 | $73K |
| Balyasny Asset Management L.P. | 0.00% | Reduce -84.8% | 11,636 | $72K |
| Xponance LLC | 0.00% | New | 11,189 | $70K |
| SG Americas Securities, LLC | 0.00% | Reduce -88.8% | 10,943 | $68K |
| Ameritas Investment Partners, Inc. | 0.00% | Add +13.6% | 10,570 | $66K |
| Nisa Investment Advisors, LLC | 0.00% | Add +30.3% | 10,018 | $62K |
| Steward Partners Investment Advisory, LLC | 0.00% | Add +8.0% | 9,895 | $62K |
| Quantbot Technologies LP | 0.00% | Reduce -45.5% | 9,707 | $60K |
| Allworth Financial LP | 0.00% | Reduce -33.9% | 8,221 | $51K |
| TrinityBridge Ltd | 0.00% | No change | 7,500 | $47K |
| Federation des caisses Desjardins du Quebec | 0.00% | Add +22.2% | 7,550 | $47K |
| Rockefeller Capital Management L.P. | 0.00% | Add +24.4% | 6,245 | $39K |
| Smartleaf Asset Management LLC | 0.00% | No change | 6,000 | $37K |
| Caitong International Asset Management Co., Ltd | 0.01% | Reduce -76.3% | 5,990 | $37K |
| Jones Financial Companies LLLP | 0.00% | Add +103.4% | 5,801 | $36K |
| Evelyn Partners Group Ltd | 0.00% | — | 5,000 | $31K |
| Bank of New Hampshire | 0.00% | No change | 3,000 | $19K |
| Parallel Advisors, LLC | 0.00% | Reduce -0.1% | 1,871 | $12K |
| Rothschild Investment LLC | 0.00% | No change | 1,695 | $11K |
| Copia Wealth Management | 0.01% | Add +127.1% | 1,658 | $10K |
| PNC Financial Services Group, Inc. | 0.00% | Add +174.3% | 1,481 | $9K |
| Signaturefd, LLC | 0.00% | Add +29.0% | 1,290 | $8K |
| Global Retirement Partners, LLC | 0.00% | — | 1,000 | $6K |
| Adirondack Trust Co. | 0.00% | No change | 986 | $6K |
| Larson Financial Group LLC | 0.00% | Reduce -21.3% | 977 | $6K |
| Sterling Capital Management LLC | 0.00% | Reduce -2.7% | 718 | $4K |
| Wilmington Savings Fund Society, FSB | 0.00% | No change | 629 | $4K |
| Quarry LP | 0.00% | New | 591 | $4K |
| Optiver Holding B.V. | 0.00% | Reduce -42.8% | 406 | $3K |
| Arax Advisory Partners | 0.00% | New | 373 | $2K |
| GAMMA Investing LLC | 0.00% | Reduce -54.6% | 248 | $2K |
| Pinnacle Wealth Planning Services, Inc. | 0.00% | New | 242 | $2K |
| EverSource Wealth Advisors, LLC | 0.00% | Add +2027.3% | 234 | $1K |
| Rialto Wealth Management, LLC | 0.00% | New | 91 | $567 |
| Bare Financial Services, Inc | 0.00% | New | 91 | $566 |
| State of Wyoming | 0.00% | Reduce -98.7% | 86 | $535 |
| SJS Investment Consulting Inc. | 0.00% | New | 76 | $473 |
| MassMutual Private Wealth & Trust, FSB | 0.00% | Add +620.0% | 72 | $448 |
| US Bancorp \de | 0.00% | Reduce -8.3% | 55 | $342 |
| Islay Capital Management, LLC | 0.00% | No change | 39 | $243 |
| Clearstead Advisors, LLC | 0.00% | New | 2 | $13 |
| Hughes Financial Services, LLC | 0.00% | New | 2 | $12 |
"% of holder's portfolio" is ASPI's weight in each manager's 13F, not the share of Asp Isotopes Inc. the manager owns.