ASP Isotopes Inc. 13F holders
187 funds reported a position in ASP Isotopes Inc. in their 13F for the quarter ended 30 June 2026, together 65.4 million shares worth $406.2 million. Against the quarter before, 35 opened a position, 73 added, 51 trimmed and 28 sold out; together they bought a net 1.2 million shares. The largest holders: BlackRock, Inc., Encompass Capital Advisors LLC and Vanguard Capital Management LLC.
Funds holding187+8 on Q1 2026
Shares they held65.4Mworth $406.2 million
Net bought on the quarter1.2M sharesabout $7.3 million at the funds' values
Funds buying to selling108 to 79opened or added, to cut or sold
Opened 35Added 73Held 25Trimmed 51Sold out 28
What each fund did in ASPI against its 13F for the quarter before; a change under 0.1% of a holding counts as held
Funds reporting a position in ASPI in their 13F, each quarter; hover a bar for the shares they held
Filed so far for the quarter to 30 September 2026
3,405 funds have filed their 13F for the quarter so far; the rest are due by 16 November 2026. Of those, 30 reported a position in ASP Isotopes Inc.: 9 opened one, 10 added, 7 trimmed and 11 sold out, a net 1.6 million shares sold.
The largest moves in the name among the funds that have filed, against each fund's previous 13F.
The well-known funds
Of the 44 funds followed here, 5 reported a position in ASP Isotopes Inc. in a 13F for the quarter ended 30 June 2026. The largest: Geode Capital Management, 2.9 million shares worth $18.3 million, 0.0% of its reported book. New this quarter: Point72 Asset Management. In the quarter, 4 funds added or opened a position and 1 trimmed or sold out; together they bought a net 69,985 shares, about $435,307 at the funds' own value per share on 30 June 2026. A change under 0.1% of a holding counts as held.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Geode Capital Management | 2,945,901 | $18.3 million | 0.0% | +205,437 | added | 30 June 2026 | 13F |
| Alyeska | 2,843,503 | $17.7 million | 0.0% | +151,337 | added | 30 June 2026 | 13F |
| Citadel Advisors | 357,591 | $2.2 million | 0.0% | -410,415 | trimmed | 30 June 2026 | 13F |
| Point72 Asset Management | 120,159 | $747,389 | 0.0% | +120,159 | new | 30 June 2026 | 13F |
| FMR LLC | 17,825 | $110,869 | 0.0% | +3,467 | added | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.The largest holders
| Fund | Shares | Share of all | Value | Of its book | Change in shares | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 9,217,198 | 14.09% | $57.3 million | 0.00% | +889,054 | 13F |
| Encompass Capital Advisors LLC | 6,561,754 | 10.03% | $40.8 million | 1.76% | -350,300 | 13F |
| Vanguard Capital Management LLC | 4,982,953 | 7.62% | $31.0 million | 0.00% | -77,511 | 13F |
| Rovida Investment Management Ltd | 4,100,000 | 6.27% | $25.5 million | 1.74% | no change | 13F |
| UBS Group AG | 3,247,633 | 4.96% | $20.2 million | 0.00% | +405,924 | 13F |
| Geode Capital Management, LLC | 2,945,901 | 4.50% | $18.3 million | 0.00% | +205,437 | 13F |
| Alyeska Investment Group, L.P. | 2,843,503 | 4.35% | $17.7 million | 0.05% | +151,337 | 13F |
| State Street Corp. | 2,595,573 | 3.97% | $16.1 million | 0.00% | +273,414 | 13F |
| Exchange Traded Concepts, LLC | 2,255,509 | 3.45% | $14.0 million | 0.07% | +71,955 | 13F |
| AWM Investment Company, Inc. | 1,581,490 | 2.42% | $9.8 million | 0.85% | -543,006 | 13F |
| BNP Paribas Asset Management Holding S.A. | 1,577,016 | 2.41% | $9.8 million | 0.01% | +689,771 | 13F |
| Philadelphia Financial Management of San Francisco, LLC | 1,343,007 | 2.05% | $8.4 million | 2.29% | +694,666 | 13F |
| Morgan Stanley | 1,162,320 | 1.78% | $7.2 million | 0.00% | -414,093 | 13F |
| Vanguard Portfolio Management LLC | 1,115,391 | 1.70% | $6.9 million | 0.00% | +138,221 | 13F |
| Northern Trust Corp. | 1,007,214 | 1.54% | $6.3 million | 0.00% | +69,691 | 13F |
| Charles Schwab Investment Management Inc. | 935,352 | 1.43% | $5.8 million | 0.00% | +38,116 | 13F |
| Barclays PLC | 847,781 | 1.30% | $5.3 million | 0.00% | -165,175 | 13F |
| Marshall Wace, LLP | 835,656 | 1.28% | $5.2 million | 0.00% | new | 13F |
| Man Group plc | 828,377 | 1.27% | $5.2 million | 0.01% | new | 13F |
| Vanguard Fiduciary Trust Co. | 788,561 | 1.21% | $4.9 million | 0.00% | +35,245 | 13F |
| Pacer Advisors, Inc. | 734,960 | 1.12% | $4.6 million | 0.01% | +231,035 | 13F |
| Bank of America Corp. | 709,057 | 1.08% | $4.4 million | 0.00% | +540,060 | 13F |
| Susquehanna International Group, LLP | 705,153 | 1.08% | $4.4 million | 0.00% | -352,187 | 13F |
| Goldman Sachs Group Inc. | 576,276 | 0.88% | $3.6 million | 0.00% | +49,481 | 13F |
| WIM Investment Management Ltd | 541,400 | 0.83% | $3.4 million | 1.10% | -60,000 | 13F |
| Diametric Capital, LP | 538,517 | 0.82% | $3.3 million | 0.36% | -414,988 | 13F |
| Nuveen, LLC | 493,421 | 0.75% | $3.1 million | 0.00% | +285,979 | 13F |
| Group One Trading LLC | 458,383 | 0.70% | $2.9 million | 0.08% | -137,242 | 13F |
| Shay Capital LLC | 413,000 | 0.63% | $2.6 million | 0.28% | -16,500 | 13F |
| Rathbones Group PLC | 381,619 | 0.58% | $2.4 million | 0.01% | -391,513 | 13F |
| Citadel Advisors LLC | 357,591 | 0.55% | $2.2 million | 0.00% | -410,415 | 13F |
| Bank of New York Mellon Corp | 356,872 | 0.55% | $2.2 million | 0.00% | +67,863 | 13F |
| Caprock Group, LLC | 321,365 | 0.49% | $2.0 million | 0.04% | +365 | 13F |
| HITE Hedge Asset Management LLC | 301,837 | 0.46% | $1.9 million | 0.10% | -24,390 | 13F |
| Bank of Montreal | 262,560 | 0.40% | $1.6 million | 0.00% | +30,787 | 13F |
| Saba Capital Management, L.P. | 261,470 | 0.40% | $1.6 million | 0.05% | -96,155 | 13F |
| JPMorgan Chase & Co. | 241,054 | 0.37% | $1.5 million | 0.00% | -32,408 | 13F |
| Headlands Technologies LLC | 240,197 | 0.37% | $1.5 million | 0.16% | +165,031 | 13F |
| Empowered Funds, LLC | 225,089 | 0.34% | $1.4 million | 0.01% | +39,136 | 13F |
| DNB Asset Management AS | 214,880 | 0.33% | $1.3 million | 0.00% | +155,098 | 13F |
| Swiss National Bank | 214,700 | 0.33% | $1.3 million | 0.00% | +4,600 | 13F |
| Invesco Ltd. | 203,976 | 0.31% | $1.3 million | 0.00% | +147,342 | 13F |
| Purewater Capital LLC | 194,387 | 0.30% | $1.2 million | 0.87% | -17,464 | 13F |
| Russell Investments Group, Ltd. | 181,776 | 0.28% | $1.1 million | 0.00% | +36,149 | 13F |
| Chicago Partners Investment Group LLC | 265,459 | 0.41% | $1.1 million | 0.02% | -108,619 | 13F |
| Stifel Financial Corp. | 166,034 | 0.25% | $1.0 million | 0.00% | +45,509 | 13F |
| Aquatic Capital Management LLC | 163,978 | 0.25% | $1.0 million | 0.04% | new | 13F |
| UBS AM, a distinct business unit of UBS Asset Management Americas LLC | 161,219 | 0.25% | $1.0 million | 0.00% | +48,743 | 13F |
| SBI Securities Co., Ltd. | 159,346 | 0.24% | $991,132 | 0.02% | -5,293 | 13F |
| Cetera Investment Advisers | 152,965 | 0.23% | $951,442 | 0.00% | +38,148 | 13F |
The 50 largest of the 187 funds that reported a position in ASPI in their 13F for the quarter ended 30 June 2026, by the value each reported.
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Share of all is the fund's part of all the shares the funds reported. Change is shares against the fund's 13F for the quarter before. A 13F lists a manager's long positions in US-listed shares at the quarter's end. What is a 13F?Options the funds reported on ASPI
| Fund | Option | Shares under the options | Value of those shares | Quarter ended | Filing |
|---|---|---|---|---|---|
| Citadel Advisors | Calls | 776,000 | $4.8 million | 30 June 2026 | 13F |
| Citadel Advisors | Puts | 579,400 | $3.6 million | 30 June 2026 | 13F |
| Point72 Asset Management | Calls | 44,100 | $274,302 | 30 June 2026 | 13F |
A 13F lists calls and puts by the shares they cover and what those shares were worth at the quarter's end, not what the options cost.
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They are not counted in the holdings above. A put gains when the stock falls, a call when it rises, and a fund may hold either to hedge.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 27 April 2026 | 13G/A | BlackRock, Inc. and 1 other | 8.3 million | 6.6% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 26 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 17 February 2026 | 13G/A | Mann Paul Elliot and 1 other | 7.8 million | 7.0% | 31 December 2025 | passive, other (13d-1(d)) | EDGAR |
| 9 February 2026 | 13G/A | BNP Paribas Asset Management UK Ltd and 1 other | 944,326 | 0.9% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 30 January 2026 | 13G | The Vanguard Group and 1 other | 6.4 million | 5.8% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 23 January 2026 | 13G | Encompass Capital Advisors LLC and 3 others | 6.4 million | 5.1% | 16 January 2026 | passive, under 20% (13d-1(c)) | EDGAR |
| 14 November 2025 | 13G/A | AK Jensen Investment Management Ltd and 1 other | 5.0 million | 5.4% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short. 13D and 13GFails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 31 August 2026 | 14 | $3.88 | SEC |
| 28 August 2026 | 276,242 | $4.04 | SEC |
| 27 August 2026 | 407,328 | $3.95 | SEC |
| 26 August 2026 | 28,017 | $4.00 | SEC |
| 25 August 2026 | 53,479 | $3.89 | SEC |
| 24 August 2026 | 118,038 | $4.00 | SEC |
| 21 August 2026 | 15,533 | $3.95 | SEC |
| 19 August 2026 | 373 | $3.86 | SEC |
| 12 August 2026 | 632 | $4.32 | SEC |
| 11 August 2026 | 600 | $4.29 | SEC |
| 6 August 2026 | 59,684 | $4.05 | SEC |
| 5 August 2026 | 97,348 | $4.29 | SEC |
| 3 August 2026 | 5,374 | $4.00 | SEC |
| 31 July 2026 | 2,500 | $3.98 | SEC |
| 30 July 2026 | 94,811 | $3.54 | SEC |
| 29 July 2026 | 278,577 | $3.78 | SEC |
| 27 July 2026 | 46,482 | $3.87 | SEC |
| 24 July 2026 | 81,352 | $4.04 | SEC |
| 21 July 2026 | 3,212 | $3.89 | SEC |
| 20 July 2026 | 25,572 | $3.88 | SEC |
| 17 July 2026 | 519,206 | $3.95 | SEC |
| 15 July 2026 | 21,469 | $4.70 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.