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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.

Q1 2026 vs. Q4 2025

How the institutions holding ASP Isotopes Inc. changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of ASPI: Q4 2025 compared with Q1 2026
MeasureQ4 2025Of which not filed for Q1 2026Q1 2026Change
Holders1735177+9
Shares58.6M6.49M63.8M+11.8M (+22.6%)
Value$313.2M$34.7M$282.5M+$4.00M (+1.4%)

5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (42)

Institutions that held ASP Isotopes Inc. at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to ASPI in Q1 2026
InstitutionSharesValue% of portfolio
Encompass Capital Advisors LLC6,912,054$30.6M1.25%
Vanguard Capital Management LLC5,060,464$22.4M0.00%
Vanguard Portfolio Management LLC977,170$4.32M0.00%
Vanguard Fiduciary Trust Co753,316$3.33M0.00%
Philadelphia Financial Management of San Francisco, LLC648,341$2.87M0.92%
Sara-Bay Financial586,673$2.59M0.80%
Chicago Partners Investment Group LLC374,078$2.10M0.05%
Alight Capital Management LP300,000$1.33M0.39%
Yaupon Capital Management LP300,000$1.33M0.07%
Purewater Capital LLC211,851$936.4K0.90%
Belpointe Asset Management LLC101,562$448.9K0.02%
SG Americas Securities, LLC97,985$433.0K0.00%
Headlands Technologies LLC75,166$332.2K0.04%
Vanguard Asset Management, Ltd74,308$328.4K0.00%
DnB Asset Management AS59,782$264.2K0.00%
Virtu Financial LLC50,461$223.0K0.01%
Alliancebernstein L.P.38,760$207.4K0.00%
Vanguard Global Advisers, LLC43,019$190.1K0.00%
Fox Run Management, L.L.C.30,410$128.3K0.02%
Vanguard Investments Australia, Ltd.28,118$124.3K0.00%
Jump Financial, LLC26,276$116.1K0.00%
Mirabella Financial Services LLP22,311$98.6K0.01%
Cambridge Investment Research Advisors, Inc.21,531$95.0K0.00%
Skopos Labs, Inc.18,868$83.4K0.00%
Brookwood Investment Group LLC18,000$79.6K0.01%
Prudential Financial Inc16,840$74.4K0.00%
Captrust Financial Advisors12,314$54.4K0.00%
XTX Topco Ltd11,921$52.7K0.00%
Calton & Associates, Inc.10,500$46.4K0.01%
Wealthfront Advisers LLC10,149$44.9K0.00%
Stephens Inc10,000$44.2K0.00%
Broadhurst Jeffrey B10,000$44.2K0.05%
State of Wyoming6,552$29.0K0.00%
Smartleaf Asset Management LLC6,000$25.3K0.00%
Innovative Asset Advisors Group, LLC2,200$9.72K0.01%
Adirondack Trust Co986$4.36K0.00%
Bryn Mawr Trust Co629$2.78K0.00%
Golden State Equity Partners436$1.93K0.00%
US Bancorp60$2650.00%
MAI Capital Management28$1240.00%
Root Financial Partners, LLC26$1150.00%
EverSource Wealth Advisors, LLC11$490.00%

Sold out (33)

Institutions that held ASP Isotopes Inc. at the end of Q4 2025 and filed for Q1 2026 without it.

Not filed for Q1 2026 yet (5)

Institutions that held ASP Isotopes Inc. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ASPI in Q4 2025 that haven't filed for Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Vanguard Group Inc6,406,244$34.3M
Southport Management, L.L.C.85,000$454.8K
Global Retirement Partners, LLC1,000$5.35K
ORG Partners LLC387$2.07K
CIBC Private Wealth Group, LLC300$1.60K