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Who owns ASP Isotopes (ASPI) stock

177 funds reported ASP Isotopes (ASPI) shares in their latest 13F filings, worth $406M in all. The largest holder is BlackRock ($57.3M). Last quarter 98 funds added to their stakes and 70 cut them.

Largest holders of ASPI (13F)Largest holders of ASPI (13F)BlackRock$57.3MEncompass Capital Advisors LLC$40.8MVanguard Group$34.3MVanguard Capital Management LLC$31.0MRovida Investment Management$25.5MUBS Group AG$20.2MGeode Capital Management, LLC$18.3MAlyeska Investment Group, L.P.$17.7MState Street$16.1MBNP Paribas Asset Management Hold…$9.8M

Largest holders (13F)

FundSharesValueChangeQuarter
BlackRock9,217,198$57.3Mincrease2026-06-30
Encompass Capital Advisors LLC6,561,754$40.8Mdecrease2026-06-30
Vanguard Group6,406,244$34.3Mincrease2025-12-31
Vanguard Capital Management LLC4,982,953$31.0Mdecrease2026-06-30
Rovida Investment Management4,100,000$25.5Munchanged2026-06-30
UBS Group AG3,247,633$20.2Mincrease2026-06-30
Geode Capital Management, LLC2,945,901$18.3Mincrease2026-06-30
Alyeska Investment Group, L.P.2,843,503$17.7Mincrease2026-06-30
State Street2,595,573$16.1Mincrease2026-06-30
BNP Paribas Asset Management Holding S.A.1,577,016$9.8Mincrease2026-06-30
Philadelphia Financial Management of San Francisco, LLC1,343,007$8.4Mincrease2026-06-30
Morgan Stanley1,162,320$7.2Mdecrease2026-06-30
Vanguard Portfolio Management LLC1,115,391$6.9Mincrease2026-06-30
Northern Trust1,007,214$6.3Mincrease2026-06-30
Charles Schwab Investment Management935,352$5.8Mincrease2026-06-30

ASP Isotopes' latest quarter

ASP Isotopes, Q2 2026: revenue $5.1M (+328% year over year), operating margin -667.5%, net loss $34.0M, operating cash flow −$23.3M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most ASPI stock?

By the latest 13F filings: BlackRock ($57.3M); Encompass Capital Advisors LLC ($40.8M); Vanguard Group ($34.3M); Vanguard Capital Management LLC ($31.0M); Rovida Investment Management ($25.5M).

What is the short interest in ASPI?

29,048,703 shares were sold short at the 2026-10-15 settlement, 9.8% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.