Who owns ASP Isotopes Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of ASPI from SEC Form 13F filings across 185 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 185 institutions disclosed 65.4M shares of ASP Isotopes Inc. worth $406.1M — about 53.3% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
185
13F holders
$406.1M
value, 2026 filers
53.3%
of shares outstanding (65.4M sh)
41
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of ASPI's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 9.2M | $57.3M | 0.0% | 7.5% | +10.7% |
| 2 | Encompass Capital Advisors LLC | 6.6M | $40.8M | 1.5% | 5.3% | -5.1% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 5.0M | $31.0M | 0.0% | 4.1% | -1.5% |
| 4 | Rovida Investment Management Ltd | 4.1M | $25.5M | 1.7% | 3.3% | 0.0% |
| 5 | UBS Group AG | 3.2M | $20.2M | 0.0% | 2.6% | +14.3% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 2.9M | $18.3M | 0.0% | 2.4% | +7.5% |
| 7 | Alyeska Investment Group, L.P. | 2.8M | $17.7M | 0.0% | 2.3% | +5.6% |
| 8 | STATE STREET CORP | 2.6M | $16.1M | 0.0% | 2.1% | +11.8% |
| 9 | EXCHANGE TRADED CONCEPTS, LLC | 2.3M | $14.0M | 0.1% | 1.8% | +3.3% |
| 10 | AWM Investment Company, Inc. | 1.6M | $9.8M | 0.9% | 1.3% | -25.6% |
| 11 | BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1.6M | $9.8M | 0.0% | 1.3% | +77.7% |
| 12 | Philadelphia Financial Management of San Francisco, LLC | 1.3M | $8.4M | 1.7% | 1.1% | +107.1% |
| 13 | MORGAN STANLEY | 1.2M | $7.2M | 0.0% | 0.9% | -26.3% |
| 14 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.1M | $6.9M | 0.0% | 0.9% | +14.1% |
| 15 | NORTHERN TRUST CORP | 1.0M | $6.3M | 0.0% | 0.8% | +7.4% |
| 16 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 935,352 | $5.8M | 0.0% | 0.8% | +4.2% |
| 17 | BARCLAYS PLC | 847,781 | $5.3M | 0.0% | 0.7% | -16.3% |
| 18 | MARSHALL WACE, LLPNEW | 835,656 | $5.2M | 0.0% | 0.7% | new |
| 19 | Man Group plcNEW | 828,377 | $5.2M | 0.0% | 0.7% | new |
| 20 | VANGUARD FIDUCIARY TRUST CO | 788,561 | $4.9M | 0.0% | 0.6% | +4.7% |
| 21 | Pacer Advisors, Inc.NEW | 734,960 | $4.6M | 0.0% | 0.6% | new |
| 22 | BANK OF AMERICA CORP /DE/ | 709,057 | $4.4M | 0.0% | 0.6% | +319.6% |
| 23 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 705,153 | $4.4M | 0.0% | 0.6% | -33.3% |
| 24 | GOLDMAN SACHS GROUP INC | 576,276 | $3.6M | 0.0% | 0.5% | +9.4% |
| 25 | WIM INVESTMENT MANAGEMENT Ltd | 541,400 | $3.4M | 1.1% | 0.4% | -10.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.