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ASPI

ASP Isotopes Inc.
$4.58 -0.12 (-2.55%) At close · Jul 15
Market Cap
$576.64M
Shares
125,903,447

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 180
Total Value: $320,475,820
Total Shares: 72,454,610
Showing 1–100 of 192 holdings by value · page 1 of 2

Institutional Ownership Trend

15 quarters

Holder Concentration

Across 179 13F filers
Top Holder
11.5%
Jun 2023 → Mar 2026 · range 8.9% – 86.9%
of institutional value
Top 5
41.0%
Jun 2023 → Mar 2026 · range 34.5% – 100.0%
of institutional value
Top 10
59.5%
Jun 2023 → Mar 2026 · range 53.1% – 100.0%
of institutional value
HHI
476
Jun 2023 → Mar 2026 · range 382 – 7,653
Broadly held
Showing 100 of 192
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $36,810,391 11.49% 8,328,144
Mid Encompass Capital Advisors LLC $30,551,278 9.53% 6,912,054
Mega VANGUARD CAPITAL MANAGEMENT LLC $22,367,250 6.98% 5,060,464
Small Rovida Investment Management Ltd $18,122,000 5.65% 4,100,000
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $13,195,026 4.12% 2,985,300
Mega UBS Group AG $12,560,352 3.92% 2,841,709
Mega GEODE CAPITAL MANAGEMENT, LLC $12,112,850 3.78% 2,740,464
Large Alyeska Investment Group, L.P. $11,899,373 3.71% 2,692,166
Mega STATE STREET CORP $10,263,942 3.20% 2,322,159
Mid EXCHANGE TRADED CONCEPTS, LLC $9,651,308 3.01% 2,183,554
Small AWM Investment Company, Inc. $9,390,272 2.93% 2,124,496
Large PEAK6 LLC $7,462,728 2.33% 1,688,400
Mega MORGAN STANLEY $6,967,744 2.17% 1,576,413
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $5,702,684 1.78% 1,290,200
Mega CITADEL ADVISORS LLC $5,124,990 1.60% 1,159,500
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $4,673,442 1.46% 1,057,340
Mega BARCLAYS PLC $4,477,264 1.40% 1,012,956
Small Diametric Capital, LP $4,214,492 1.32% 953,505
Mega NORTHERN TRUST CORP Bank $4,143,849 1.29% 937,523
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $3,965,783 1.24% 897,236
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. $3,921,622 1.22% 887,245
Small Creek Drive Management Group LLC $3,757,442 1.17% 850,100
Mega CITADEL ADVISORS LLC $3,394,586 1.06% 768,006
Mega VANGUARD FIDUCIARY TRUST CO Bank $3,329,656 1.04% 753,316
Mega CITADEL ADVISORS LLC $3,158,090 0.99% 714,500
Mega JANE STREET GROUP, LLC $3,025,396 0.94% 684,479
Small Philadelphia Financial Management of San Francisco, LLC $2,865,667 0.89% 648,341
Small WIM INVESTMENT MANAGEMENT Ltd $2,658,188 0.83% 601,400
Mid GROUP ONE TRADING LLC $2,632,662 0.82% 595,625
Small Sara-Bay Financial $2,593,094 0.81% 586,673
Mega GOLDMAN SACHS GROUP INC $2,328,432 0.73% 526,795
Large Pacer Advisors, Inc. $2,227,348 0.70% 503,925
Mid Shay Capital LLC $1,898,390 0.59% 429,500
Large Rathbones Group PLC $1,708,621 0.53% 386,566
Mid Chicago Partners Investment Group LLC $1,653,424 0.52% 374,078
Mid Saba Capital Management, L.P. $1,580,702 0.49% 357,625
Mid HITE Hedge Asset Management LLC $1,441,923 0.45% 326,227
Mid Caprock Group, LLC $1,418,820 0.44% 321,000
Small Alight Capital Management LP $1,326,000 0.41% 300,000
Mid Yaupon Capital Management LP $1,326,000 0.41% 300,000
Mega Bank of New York Mellon Corp Bank $1,277,417 0.40% 289,009
Mega JPMORGAN CHASE & CO $1,208,701 0.38% 273,462
Mid IMC-Chicago, LLC $1,186,632 0.37% 268,469
Small Crawford Fund Management, LLC $1,127,100 0.35% 255,000
Mid Burkehill Global Management, LP $1,105,000 0.34% 250,000
Mega BANK OF MONTREAL /CAN/ Bank $1,024,436 0.32% 231,773
Micro Purewater Capital LLC $936,381 0.29% 211,851
Mega Swiss National Bank Bank $928,642 0.29% 210,100
Mega Nuveen, LLC $916,893 0.29% 207,442
Small Arosa Capital Management LP $884,000 0.28% 200,000
Large Empowered Funds, LLC $821,912 0.26% 185,953
Mega BANK OF AMERICA CORP /DE/ Bank $746,966 0.23% 168,997
Mega JANE STREET GROUP, LLC $734,604 0.23% 166,200
Mid SBI Securities Co., Ltd. Broker-Dealer $727,704 0.23% 164,639
Large TUDOR INVESTMENT CORP ET AL $711,752 0.22% 161,030
Mega JANE STREET GROUP, LLC $687,752 0.21% 155,600
Mid PRELUDE CAPITAL MANAGEMENT, LLC $679,133 0.21% 153,650
Mid PFG Investments, LLC $673,166 0.21% 152,300
Mid Farther Finance Advisors, LLC $663,954 0.21% 150,216
Mega UBS Group AG $663,000 0.21% 150,000
Large SEI INVESTMENTS CO $657,024 0.21% 148,648
Small Massar Capital Management, LP $651,401 0.20% 147,376
Large Russell Investments Group, Ltd. $643,670 0.20% 145,627
Large POLEN CAPITAL MANAGEMENT LLC $543,527 0.17% 122,970
Large STIFEL FINANCIAL CORP $532,720 0.17% 120,525
Mega RHUMBLINE ADVISERS $520,136 0.16% 117,678
Large Cetera Investment Advisers $507,491 0.16% 114,817
Small FNY Investment Advisers, LLC $498,222 0.16% 80,100
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $497,143 0.16% 112,476
Mid Belpointe Asset Management LLC $448,904 0.14% 101,562
Small Canal Insurance CO Insurance $442,000 0.14% 100,000
Large SG Americas Securities, LLC Broker-Dealer $433,093 0.14% 97,985
Mega DEUTSCHE BANK AG\ Bank $413,967 0.13% 93,658
Large Marex Group plc $405,314 0.13% 91,700
Small Pekin Hardy Strauss, Inc. $390,949 0.12% 88,450
Large NATIONAL BANK OF CANADA /FI/ Bank $380,650 0.12% 86,120
Mega PRICE T ROWE ASSOCIATES INC /MD/ $356,433 0.11% 80,641
Large PEAK6 LLC $350,117 0.11% 79,212
Mid Penn Capital Management Company, LLC $348,393 0.11% 78,822
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $345,697 0.11% 78,212
Large Balyasny Asset Management L.P. $338,222 0.11% 76,521
Small Headlands Technologies LLC $332,233 0.10% 75,166
Mega CITIGROUP INC $332,215 0.10% 75,162
Large Centiva Capital, LP $331,500 0.10% 75,000
Mega VANGUARD ASSET MANAGEMENT, Ltd $328,441 0.10% 74,308
Large Squarepoint Ops LLC $312,038 0.10% 70,597
Large MetLife Investment Management, LLC $281,054 0.09% 63,587
Mid SIMPLEX TRADING, LLC $272,484 0.09% 61,648
Large DNB Asset Management AS $264,236 0.08% 59,782
Mega Invesco Ltd. $250,320 0.08% 56,634
Mega Legal & General Group Plc $244,982 0.08% 55,426
Large OSAIC HOLDINGS, INC. $238,555 0.07% 53,972
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $235,727 0.07% 53,332
Mid Virtu Financial LLC $223,037 0.07% 50,461
Small MH & ASSOCIATES SECURITIES MANAGEMENT CORP /ADV Broker-Dealer $221,424 0.07% 50,096
Mega WELLS FARGO & COMPANY/MN $219,818 0.07% 49,733
Small Patriot Financial Group Insurance Agency, LLC Insurance $198,811 0.06% 44,980
Mega LPL Financial LLC $195,226 0.06% 44,169
Large Point72 Asset Management, L.P. $194,922 0.06% 44,100
Mega Vanguard Global Advisers, LLC $190,143 0.06% 43,019
Key facts CIK 1921865 CUSIP 00218A105 13F (30d) 7 filings 7 filers Visit website Investor relations

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