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ASP Isotopes Inc. (ASPI) Institutional Ownership & Insider Trading

185 institutions reported holding ASP Isotopes Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 34 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

ASPIASP Isotopes Inc.Follow ASPI — free
Chemicals · Basic Materials
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Price chart with a free account
Market cap
298.2M
P/E TTM
—
Dividend yield
—
52-week
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Next earnings
17 Nov, in 24 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

185 institutions held 42.7% of the shares. Across filers that reported both quarters, shares held changed +2.2%.

Increased+68New+34Decreased-49Closed-22

Largest moves, shares (millions)

BlackRock+0.9MMarshall Wace+0.8MMan Group+0.8MJane Street Group-0.7MSara-Bay Financial-0.6MAWM Investment Company-0.5M

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters
+12.9Sep 24+9.8Dec 24+0.3Mar 25+10.4Jun 25+11.6Sep 25+5.1Dec 25+4.5Mar 26+1.4Jun 26
QuarterHoldersShares held, MChangeIncreasedNewDecreasedClosed
Jun 2618565+2.2%68344922
Mar 2617663+8.8%71333832
Dec 2517259+9.7%76453229
Sep 2515353+28.2%65402914
Jun 2512641+36.4%43422012
Mar 259532+0.9%34172613
Dec 249332+43.6%3430159
Sep 246622+190.0%312186

ASP Isotopes Inc. — questions

Who owns ASP Isotopes Inc. stock?
185 institutions reported ASP Isotopes Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: BlackRock, Inc. (6.0%), Encompass Capital Advisors LLC (4.3%), VANGUARD CAPITAL MANAGEMENT LLC (3.3%).
Are ASP Isotopes Inc. insiders buying or selling?
34 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from ASP Isotopes Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.