ASP ISOTOPES INC (ASPI)
Institutional ownership reported to the SEC as of Q2 2026, across 16 quarters.
Institutions report 65,445,472 shares against 125,903,447 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $57.3M | 9,217,198 | 0.00% | 8q | +10.7%+$5.5M |
| Encompass Capital Advisors LLC | $40.8M | 6,561,754 | 1.45% | 2q | -5.1%-$2.2M |
| VANGUARD CAPITAL MANAGEMENT LLC | $31.0M | 4,982,953 | 0.00% | 2q | -1.5%-$482.1K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $28.3M incl. $23.9M options CALL+PUT | 705,153 | 0.00% | 9q | -33.3%-$14.1M |
| Rovida Investment Management Ltd | $25.5M | 4,100,000 | 1.74% | 7q | HELD |
| UBS Group AG | $23.4M incl. $3.2M options CALL | 3,247,633 | 0.00% | 9q | +14.3%+$2.9M |
| GEODE CAPITAL MANAGEMENT, LLC | $18.3M | 2,945,901 | 0.00% | 12q | +7.5%+$1.3M |
| Alyeska Investment Group, L.P. | $17.7M | 2,843,503 | 0.05% | 5q | +5.6%+$941.3K |
| STATE STREET CORP | $16.1M | 2,595,573 | 0.00% | 11q | +11.8%+$1.7M |
| EXCHANGE TRADED CONCEPTS, LLC | $14.0M | 2,255,509 | 0.06% | 5q | +3.3%+$447.6K |
| CITADEL ADVISORS LLC | $10.7M incl. $8.4M options CALL+PUT | 357,591 | 0.00% | 7q | -53.4%-$12.2M |
| AWM Investment Company, Inc. | $9.8M | 1,581,490 | 0.85% | 8q | -25.6%-$3.4M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $9.8M | 1,577,016 | 0.01% | 8q | +77.7%+$4.3M |
| GROUP ONE TRADING LLC | $9.7M incl. $6.8M options CALL+PUT | 458,383 | 0.01% | 7q | -23.0%-$2.9M |
| PEAK6 LLC | $8.5M CALL | options only | 0.02% | 6q | OPTIONS |
| Philadelphia Financial Management of San Francisco, LLC | $8.4M | 1,343,007 | 1.68% | 2q | +107.1%+$4.3M |
| JANE STREET GROUP, LLC | $8.3M incl. $8.2M options CALL+PUT | 21,094 | 0.00% | 10q | -96.9%-$262.2M |
| MORGAN STANLEY | $7.2M | 1,162,320 | 0.00% | 10q | -26.3%-$2.6M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $6.9M | 1,115,391 | 0.00% | 2q | +14.1%+$859.7K |
| NORTHERN TRUST CORP | $6.3M | 1,007,214 | 0.00% | 12q | +7.4%+$433.5K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $5.8M | 935,352 | 0.00% | 9q | +4.2%+$237.1K |
| BARCLAYS PLC | $5.3M | 847,781 | 0.00% | 9q | -16.3%-$1.0M |
| MARSHALL WACE, LLP | $5.2M | 835,656 | 0.00% | new | NEW |
| Man Group plc | $5.2M | 828,377 | 0.01% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $4.9M | 788,561 | 0.00% | 2q | +4.7%+$219.2K |
| IMC-Chicago, LLC | $4.6M CALL+PUT | options only | 0.00% | 3q | OPTIONS |
| Pacer Advisors, Inc. | $4.6M | 734,960 | 0.01% | 3q | +45.8%+$1.4M |
| BANK OF AMERICA CORP /DE/ | $4.4M | 709,057 | 0.00% | 9q | +319.6%+$3.4M |
| GOLDMAN SACHS GROUP INC | $3.6M | 576,276 | 0.00% | 10q | +9.4%+$307.8K |
| WIM INVESTMENT MANAGEMENT Ltd | $3.4M | 541,400 | 1.10% | 3q | -10.0%-$373.2K |
| Diametric Capital, LP | $3.3M | 538,517 | 0.35% | 8q | -43.5%-$2.6M |
| Nuveen, LLC | $3.1M | 493,421 | 0.00% | 6q | +137.9%+$1.8M |
| Creek Drive Management Group LLC | $2.6M CALL | options only | 1.28% | 2q | OPTIONS |
| SIMPLEX TRADING, LLC | $2.6M incl. $2.5M options CALL+PUT | 13,664 | 0.00% | 7q | -77.8%-$9.0M |
| Shay Capital LLC | $2.6M | 413,000 | 0.17% | 5q | -3.8%-$102.6K |
| Rathbones Group PLC | $2.4M | 381,619 | 0.01% | 11q | -50.6%-$2.4M |
| Bank of New York Mellon Corp | $2.2M | 356,872 | 0.00% | 9q | +23.5%+$422.1K |
| Caprock Group, LLC | $2.0M | 321,365 | 0.04% | 4q | HELD |
| Crawford Fund Management, LLC | $1.9M PUT | options only | 0.30% | 4q | OPTIONS |
| HITE Hedge Asset Management LLC | $1.9M | 301,837 | 0.10% | 3q | -7.5%-$151.7K |
| BANK OF MONTREAL /CAN/ | $1.6M | 262,560 | 0.00% | 7q | +13.3%+$191.5K |
| Saba Capital Management, L.P. | $1.6M | 261,470 | 0.04% | 3q | -26.9%-$598.1K |
| JPMORGAN CHASE & CO | $1.5M | 241,054 | 0.00% | 12q | -11.9%-$201.6K |
| Headlands Technologies LLC | $1.5M | 240,197 | 0.16% | 2q | +219.6%+$1.0M |
| Empowered Funds, LLC | $1.4M | 225,089 | 0.01% | 3q | +21.0%+$243.4K |
| DNB Asset Management AS | $1.3M | 214,880 | 0.00% | 2q | +259.4%+$964.7K |
| Swiss National Bank | $1.3M | 214,700 | 0.00% | 3q | +2.2%+$28.6K |
| Invesco Ltd. | $1.3M | 203,976 | 0.00% | 9q | +260.2%+$916.5K |
| NATIONAL BANK OF CANADA /FI/ | $1.2M incl. $622.0K options PUT | 100,000 | 0.00% | 7q | +16.1%+$172.7K |
| Purewater Capital LLC | $1.2M | 194,387 | 0.87% | 2q | -8.2%-$108.6K |
| Russell Investments Group, Ltd. | $1.1M | 181,776 | 0.00% | 8q | +24.8%+$224.8K |
| Chicago Partners Investment Group LLC | $1.1M incl. $808 options CALL | 265,459 | 0.02% | 3q | -29.0%-$439.2K |
| STIFEL FINANCIAL CORP | $1.0M | 166,034 | 0.00% | 5q | +37.8%+$283.1K |
| Point72 Asset Management, L.P. | $1.0M incl. $274.3K options CALL | 120,159 | 0.00% | 2q | HELD |
| Aquatic Capital Management LLC | $1.0M | 163,978 | 0.04% | new | NEW |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $1.0M | 161,219 | 0.00% | 3q | +43.3%+$303.2K |
| SBI Securities Co., Ltd. | $991.1K | 159,346 | 0.02% | 7q | -3.2%-$32.9K |
| Cetera Investment Advisers | $951.4K | 152,965 | 0.00% | 4q | +33.2%+$237.3K |
| POLEN CAPITAL MANAGEMENT LLC | $930.3K | 149,559 | 0.01% | 5q | +21.6%+$165.4K |
| RHUMBLINE ADVISERS | $878.8K | 141,284 | 0.00% | 9q | +20.1%+$146.8K |
| Squarepoint Ops LLC | $771.0K | 123,951 | 0.00% | 4q | +75.6%+$331.9K |
| CITIGROUP INC | $754.5K | 121,309 | 0.00% | 10q | +61.4%+$287.0K |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $754.1K | 121,243 | 0.00% | 9q | +55.0%+$267.7K |
| DEUTSCHE BANK AG\ | $748.7K | 120,367 | 0.00% | 9q | +28.5%+$166.1K |
| WELLS FARGO & COMPANY/MN | $722.3K | 116,119 | 0.00% | 12q | +133.5%+$412.9K |
| Centiva Capital, LP | $662.6K incl. $466.5K options CALL | 31,526 | 0.01% | 4q | -13.7%-$105.5K |
| Polymer Capital Management (US) LLC | $656.2K | 105,494 | 0.09% | new | NEW |
| Marex Group Ltd | $622.6K | 100,100 | 0.00% | 7q | +9.2%+$52.2K |
| Canal Insurance CO | $622.0K | 100,000 | 0.14% | 4q | HELD |
| PRICE T ROWE ASSOCIATES INC /MD/ | $603.0K | 96,913 | 0.00% | 8q | +20.2%+$101.2K |
| WINTON GROUP Ltd | $587.9K | 94,512 | 0.02% | new | NEW |
| D. E. Shaw & Co., Inc. | $580.9K CALL | options only | 0.00% | new | OPTIONS |
| OSAIC HOLDINGS, INC. | $570.5K incl. $11.5K options CALL | 89,876 | 0.00% | 6q | +66.5%+$227.9K |
| Legal & General Group Plc | $540.8K | 86,951 | 0.00% | 9q | +56.9%+$196.1K |
| FNY Investment Advisers, LLC | $498.0K | 80,100 | 0.18% | 5q | -7.5%-$40.4K |
| ALLIANCEBERNSTEIN L.P. | $476.4K | 107,790 | 0.00% | 2q | +178.1%+$305.1K |
| Pekin Hardy Strauss, Inc. | $463.1K | 74,450 | 0.04% | 4q | -15.8%-$87.1K |
| VANGUARD ASSET MANAGEMENT, Ltd | $462.2K | 74,308 | 0.00% | 2q | HELD |
| Penn Capital Management Company, LLC | $440.1K | 70,757 | 0.03% | 5q | -10.2%-$50.2K |
| SEI INVESTMENTS CO | $434.1K | 69,796 | 0.00% | 3q | -53.0%-$490.5K |
| MetLife Investment Management, LLC | $433.7K | 69,727 | 0.00% | 8q | +9.7%+$38.2K |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ | $417.6K | 67,136 | 0.00% | new | NEW |
| PRELUDE CAPITAL MANAGEMENT, LLC | $413.7K | 66,505 | 0.03% | 8q | -56.7%-$542.0K |
| Farther Finance Advisors, LLC | $389.5K | 62,618 | 0.00% | 5q | -58.3%-$544.9K |
| MH & ASSOCIATES SECURITIES MANAGEMENT CORP /ADV | $387.3K | 62,265 | 0.35% | 3q | +24.3%+$75.7K |
| Creative Planning | $346.9K | 55,779 | 0.00% | 5q | +34.1%+$88.3K |
| Kingsview Wealth Management, LLC | $336.5K | 54,102 | 0.00% | new | NEW |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $333.6K | 53,638 | 0.00% | 8q | +0.6%+$1.9K |
| Bleakley Financial Group, LLC | $310.7K | 49,954 | 0.00% | new | NEW |
| AMERICAN CENTURY COMPANIES INC | $298.7K | 48,021 | 0.00% | new | NEW |
| Vanguard Global Advisers, LLC | $267.6K | 43,019 | 0.00% | 2q | HELD |
| Ninety One SA (Pty) Ltd | $251.8K | 40,489 | 0.01% | new | NEW |
| Brevan Howard Capital Management LP | $246.2K | 39,576 | 0.00% | 4q | +126.6%+$137.5K |
| Jupiter Topco LLC | $242.8K | 39,000 | 0.00% | new | FIRST |
| PFG Investments, LLC | $238.8K | 38,400 | 0.01% | 6q | -74.8%-$708.5K |
| ROYAL BANK OF CANADA | $238.0K | 38,232 | 0.00% | 9q | +0.7%+$1.7K |
| Advisory Services Network, LLC | $216.8K incl. $4.4K options CALL | 34,162 | 0.00% | 5q | -15.1%-$38.6K |
| Police & Firemen's Retirement System of New Jersey | $210.8K | 33,888 | 0.00% | 7q | HELD |
| Sanctuary Advisors, LLC | $200.3K | 32,195 | 0.00% | 8q | +30.8%+$47.1K |
| KLP KAPITALFORVALTNING AS | $196.6K | 31,600 | 0.00% | 3q | HELD |
Showing the largest 100 of 192 reported holders.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-08-20 | 2026-08-14 | Material agreement entered Material agreement terminated | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-02-05:00 | Mann Paul Elliot | Chairman and CEO | Sold | 83,758 | $694.4K |
| 2026-06-01-05:00 | Mann Paul Elliot | Chairman and CEO | Sold | 83,758 | $660.0K |
| 2026-06-03-05:00 | Mann Paul Elliot | Chairman and CEO | Sold | 83,759 | $650.0K |
| 2026-06-30-05:00 | Ainscow Donald George | EVP, Gen Counsel, Secretary | Sold | 100,000 | $614.0K |
| 2026-09-04-05:00 | Mann Paul Elliot | Chairman and CEO | Sold | 83,759 | $343.4K |
| 2026-09-03-05:00 | Mann Paul Elliot | Chairman and CEO | Sold | 83,758 | $328.3K |
| 2026-09-02-05:00 | Mann Paul Elliot | Chairman and CEO | Sold | 83,758 | $327.5K |
| 2026-06-29-05:00 | Wider Todd | Director | Sold | 50,000 | $312.5K |
| 2026-06-30-05:00 | Wider Todd | Director | Sold | 50,000 | $306.0K |
| 2026-06-30-05:00 | Gorley Michael | Director | Sold | 30,000 | $188.1K |
| 2026-07-01-05:00 | Kiessling Heather | Chief Financial Officer | Sold | 23,124 | $145.2K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 27 | $4.7M | 1,795,541 | 9 | 9 | 5 | 0.0% |
| Q2 2026 | 192 | $479.0M | 65,445,472 | 39 | 72 | 51 | 15.2% |
| Q1 2026 | 181 | $340.1M | 64,233,942 | 35 | 74 | 38 | 16.4% |
| Q4 2025 | 178 | $384.3M | 58,972,717 | 49 | 77 | 34 | 17.9% |
| Q3 2025 | 161 | $627.2M | 53,313,207 | 47 | 69 | 30 | 18.3% |
| Q2 2025 | 133 | $357.5M | 41,543,426 | 44 | 47 | 26 | 14.5% |
| Q1 2025 | 104 | $165.9M | 32,596,086 | 20 | 37 | 24 | 7.9% |
| Q4 2024 | 98 | $153.8M | 32,520,717 | 41 | 33 | 19 | 4.2% |
| Q3 2024 | 67 | $62.5M | 22,418,164 | 25 | 31 | 6 | 0.0% |
| Q2 2024 | 50 | $26.9M | 8,799,473 | 29 | 11 | 9 | 0.0% |
| Q1 2024 | 30 | $16.5M | 3,995,163 | 15 | 12 | 3 | 0.0% |
| Q4 2023 | 19 | $3.0M | 1,674,542 | 9 | 6 | 3 | 0.0% |
| Q3 2023 | 11 | $292.9K | 308,068 | 8 | 0 | 3 | 0.0% |
| Q2 2023 | 4 | $1.0M | 551,482 | 3 | 1 | 0 | 0.0% |
| Q1 2023 | 6 | $2.8M | 3,248,596 | 3 | 1 | 1 | 0.0% |
| Q4 2022 | 3 | $75.3K | 47,212 | 3 | 0 | 0 | 0.0% |
