ASP Isotopes Inc.
ASPI- Exchange
- Nasdaq
- Industry
- Miscellaneous Chemical Products
- SEC CIK
- 0001921865
In the last 90 days, ASP Isotopes Inc. insiders filed 0 open-market purchases and 8 sales; 185 institutions reported holding it in 13F filings for Q2 2026, worth $406.1M in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in ASP Isotopes Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 173
- +18 vs. Q3 2025
- Shares held
- 58.6M
- +5.67M (+10.7%) vs. Q3 2025
- Total value
- $313.2M
- −$195.4M (−38.4%) vs. Q3 2025
- New holders
- 49
- 77 more added
- Sold out
- 31
- 35 more reduced
2 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ASPI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 185 | $406.1M |
| Q1 2026 | 177 | $282.5M |
| Q4 2025 | 173 | $313.2M |
| Q3 2025 | 157 | $508.9M |
| Q2 2025 | 130 | $305.5M |
| Q1 2025 | 100 | $152.8M |
| Q4 2024 | 95 | $147.3M |
| Q3 2024 | 69 | $62.4M |
| Q2 2024 | 51 | $26.9M |
| Q1 2024 | 31 | $15.6M |
| Q4 2023 | 19 | $3.01M |
| Q3 2023 | 11 | $292.9K |
| Q2 2023 | 4 | $1.02M |
| Q1 2023 | 6 | $2.77M |
| Q4 2022 | 3 | $75.3K |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding ASP Isotopes Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Cetera Investment Advisers | 71,307 | $381.5K | 0.00% | +58,434+453.9% | Added |
| Brevan Howard Capital Management LP | 72,000 | $385.6K | 0.01% | +10,880+17.8% | Added |
| Citigroup Inc | 75,352 | $403.1K | 0.00% | +60,599+410.8% | Added |
| Legal & General Group Plc | 76,511 | $409.3K | 0.00% | +68,134+813.3% | Added |
| SEI Investments Co | 77,004 | $412.0K | 0.00% | +77,004 | New |
| California State Teachers Retirement System | 77,208 | $413.1K | 0.00% | +73,441+1,949.6% | Added |
| Moore Capital Management, LP | 80,000 | $428.0K | 0.01% | −120,000−60.0% | Reduced |
| Balyasny Asset Management LLC | 80,527 | $430.8K | 0.00% | +37,639+87.8% | Added |
| Southport Management, L.L.C. | 85,000 | $454.8K | 1.59% | +55,000+183.3% | Added |
| FNY Investment Advisers, LLC | 85,100 | $455.0K | 0.13% | +72,600+580.8% | Added |
| Marex Group plc | 85,201 | $455.8K | 0.00% | +16,701+24.4% | Added |
| Jefferies Financial Group Inc. | 87,260 | $466.8K | 0.00% | +47,734+120.8% | Added |
| Quest Partners LLC | 88,177 | $471.7K | 0.03% | +59,905+211.9% | Added |
| Simplex Trading, LLC | 93,716 | $501.4K | 0.01% | +80,319+599.5% | Added |
| Canal Insurance CO | 100,000 | $535.0K | 0.13% | +70,000+233.3% | Added |
| Rhumbline Advisers | 101,537 | $543.2K | 0.00% | −750−0.7% | Reduced |
| UBS Asset Management Americas Inc | 102,376 | $547.7K | 0.00% | +102,376 | New |
| Stifel Financial Corp | 109,852 | $587.7K | 0.00% | −8,100−6.9% | Reduced |
| Bank of Montreal | 117,886 | $630.7K | 0.00% | +13,514+12.9% | Added |
| Farther Finance Advisors, LLC | 124,563 | $666.4K | 0.01% | +13,387+12.0% | Added |
| Penn Capital Management Co Inc | 126,916 | $679.0K | 0.05% | −75,228−37.2% | Reduced |
| Wells Fargo & Company | 131,671 | $704.4K | 0.00% | +84,605+179.8% | Added |
| Tudor Investment Corp Et Al | 132,936 | $711.2K | 0.00% | −327,749−71.1% | Reduced |
| Empowered Funds, LLC | 134,602 | $720.1K | 0.01% | +134,602 | New |
| Polen Capital Management LLC | 139,511 | $746.4K | 0.00% | −93,402−40.1% | Reduced |
| Russell Investments Group, Ltd. | 145,463 | $778.2K | 0.00% | +18,885+14.9% | Added |
| Massar Capital Management, LP | 147,376 | $788.5K | 0.16% | +147,376 | New |
| SBI Securities Co., Ltd. | 152,120 | $813.8K | 0.02% | +100,769+196.2% | Added |
| PFG Investments, LLC | 181,800 | $972.6K | 0.05% | +158,000+663.9% | Added |
| Nuveen, LLC | 182,725 | $977.6K | 0.00% | +15,350+9.2% | Added |
| Verition Fund Management LLC | 187,728 | $1.00M | 0.01% | −176,037−48.4% | Reduced |
| VARCOV Co. | 188,649 | $1.01M | 0.40% | +188,649 | New |
| JPMorgan Chase & Co | 194,479 | $1.04M | 0.00% | −180,237−48.1% | Reduced |
| Arosa Capital Management LP | 200,000 | $1.07M | 0.69% | +200,000 | New |
| Swiss National Bank | 210,100 | $1.12M | 0.00% | +210,100 | New |
| Prelude Capital Management, LLC | 228,487 | $1.22M | 0.09% | +130,091+132.2% | Added |
| Bank of America Corp | 230,856 | $1.24M | 0.00% | +102,573+80.0% | Added |
| Bank of New York Mellon Corp | 243,987 | $1.31M | 0.00% | +32,383+15.3% | Added |
| Burkehill Global Management, LP | 250,000 | $1.34M | 0.09% | +250,000 | New |
| IMC-Chicago, LLC | 294,502 | $1.58M | 0.03% | +261,274+786.3% | Added |
| CAPROCK Group, Inc. | 322,314 | $1.72M | 0.04% | +26,314+8.9% | Added |
| Gsa Capital Partners LLP | 329,488 | $1.76M | 0.15% | +9,252+2.9% | Added |
| Two Sigma Investments, LP | 356,237 | $1.91M | 0.00% | +18,992+5.6% | Added |
| Saba Capital Management, L.P. | 356,377 | $1.91M | 0.06% | +356,377 | New |
| Quantbot Technologies LP | 396,599 | $2.12M | 0.07% | +393,039+11,040.4% | Added |
| Rathbone Brothers plc | 399,599 | $2.14M | 0.01% | +162,535+68.6% | Added |
| Pacer Advisors, Inc. | 404,372 | $2.16M | 0.01% | +404,372 | New |
| Schonfeld Strategic Advisors LLC | 414,875 | $2.22M | 0.01% | +215,028+107.6% | Added |
| Group One Trading, L.P. | 444,345 | $2.38M | 0.07% | −183,898−29.3% | Reduced |
| HITE Hedge Asset Management LLC | 449,883 | $2.41M | 0.15% | +449,883 | New |
| Barclays PLC | 506,788 | $2.71M | 0.00% | +274,424+118.1% | Added |
| Shay Capital LLC | 579,000 | $3.10M | 0.50% | +431,000+291.2% | Added |
| Wim Investment Management Ltd | 601,400 | $3.22M | 0.83% | +601,400 | New |
| Diametric Capital, LP | 737,304 | $3.94M | 1.06% | +381,624+107.3% | Added |
| Northern Trust Corp | 745,909 | $3.99M | 0.00% | +145,860+24.3% | Added |
| Marshall Wace, LLP | 818,129 | $4.38M | 0.00% | −460,992−36.0% | Reduced |
| Telemark Asset Management, LLC | 825,000 | $4.41M | 0.44% | −500,000−37.7% | Reduced |
| Charles Schwab Investment Management Inc | 885,739 | $4.74M | 0.00% | +223,778+33.8% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 944,326 | $5.05M | 0.01% | +280,387+42.2% | Added |
| Exchange Traded Concepts, LLC | 1,400,314 | $7.49M | 0.06% | +194,034+16.1% | Added |
| Susquehanna International Group, LLP | 1,516,643 | $8.11M | 0.01% | +174,860+13.0% | Added |
| Jane Street Group, LLC | 1,586,961 | $8.49M | 0.01% | +368,244+30.2% | Added |
| Morgan Stanley | 1,709,783 | $9.15M | 0.00% | +1,270,030+288.8% | Added |
| Goldman Sachs Group Inc | 1,715,292 | $9.18M | 0.00% | +1,306,540+319.6% | Added |
| Citadel Advisors LLC | 1,725,553 | $9.23M | 0.01% | +559,788+48.0% | Added |
| State Street Corp | 1,844,405 | $9.87M | 0.00% | +438,673+31.2% | Added |
| AWM Investment Company, Inc. | 2,124,496 | $11.4M | 1.10% | −834,100−28.2% | Reduced |
| Geode Capital Management, LLC | 2,384,066 | $12.8M | 0.00% | +521,611+28.0% | Added |
| UBS Group AG | 2,406,457 | $12.9M | 0.00% | +1,445,165+150.3% | Added |
| Rovida Investment Management Ltd | 4,100,000 | $21.9M | 2.98% | +900,000+28.1% | Added |
| Alyeska Investment Group, L.P. | 4,895,546 | $26.2M | 0.07% | +2,072,851+73.4% | Added |
| Vanguard Group Inc | 6,406,244 | $34.3M | 0.00% | +1,889,481+41.8% | Added |
| BlackRock, Inc. | 6,789,417 | $36.3M | 0.00% | +1,328,425+24.3% | Added |
| Capital Research Global Investors | 0 | $0 | 0.00% | −2,043,567−100.0% | Sold out |
| Philadelphia Financial Management of San Francisco, LLC | 0 | $0 | 0.00% | −1,661,494−100.0% | Sold out |
| Driehaus Capital Management LLC | 0 | $0 | 0.00% | −1,419,837−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −940,500−100.0% | Sold out |
| Sara-Bay Financial | 0 | $0 | 0.00% | −903,103−100.0% | Sold out |
| Encompass Capital Advisors LLC | 0 | $0 | 0.00% | −500,000−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −417,908−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −245,985−100.0% | Sold out |
| Concentric Capital Strategies, LP | 0 | $0 | 0.00% | −218,054−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −201,200−100.0% | Sold out |
| Baird Financial Group, Inc. | 0 | $0 | 0.00% | −192,308−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −139,782−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −120,131−100.0% | Sold out |
| SPX Equities Gestao de Recursos Ltda | 0 | $0 | 0.00% | −109,600−100.0% | Sold out |
| Alliancebernstein L.P. | 0 | $0 | 0.00% | −98,870−100.0% | Sold out |
| EAM Investors, LLC | 0 | $0 | 0.00% | −68,148−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −54,714−100.0% | Sold out |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0 | $0 | 0.00% | −45,000−100.0% | Sold out |
| Mariner, LLC | 0 | $0 | 0.00% | −41,030−100.0% | Sold out |
| Omers Administration Corp | 0 | $0 | 0.00% | −32,600−100.0% | Sold out |
| Belvedere Trading LLC | 0 | $0 | 0.00% | −23,822−100.0% | Sold out |
| Flow Traders U.S. LLC | 0 | $0 | 0.00% | −23,703−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −23,371−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −21,900−100.0% | Sold out |
| Sig Brokerage, LP | 0 | $0 | 0.00% | −20,912−100.0% | Sold out |
| Once Capital Management, LLC | 0 | $0 | 0.00% | −9,600−100.0% | Sold out |
| Clear Street Markets LLC | 0 | $0 | 0.00% | −2,778−100.0% | Sold out |