ASP Isotopes Inc.
ASP Isotopes Inc. (NASDAQ: ASPI) is an advanced materials company dedicated to developing differentiated isotope enrichment technologies and producing critical materials for nuclear medicine, semiconductors, and nuclear energy applications. The company operates through three reportable segments: nuclear fuels,… From the company’s description.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What ASP Isotopes Inc. does
In the company’s own words
ASP Isotopes Inc. (NASDAQ: ASPI) is an advanced materials company dedicated to developing differentiated isotope enrichment technologies and producing critical materials for nuclear medicine, semiconductors, and nuclear energy applications. The company operates through three reportable segments: nuclear fuels, specialist isotopes and related services, and construction services.
The company's core technology platform consists of two proprietary enrichment processes: the Aerodynamic Separation Process (ASP technology) and Quantum Enrichment technology (QE technology). ASP Isotopes has commenced commercial production at enrichment facilities in Pretoria, South Africa, with initial focus on producing enriched Carbon-14, Silicon-28, and Ytterbium-176. The company targets commercial shipments of enriched C-14 in mid-2026, Si-28 in the second quarter of 2026, and Yb-176 in mid-2026 or the third quarter of 2026. The company believes enriched C-14 can be used in pharmaceutical and agrochemical development, Si-28 in advanced semiconductors and quantum computing, and Yb-176 in radiotherapeutics for oncology treatment.
Through its Quantum Leap Energy subsidiary, ASP Isotopes is pursuing uranium enrichment initiatives in South Africa to produce high-assay low-enriched uranium (HALEU) for small modular reactors and advanced reactor designs. The company has entered into agreements with TerraPower, including a term loan and supply agreements for HALEU production.
In January 2026, ASP Isotopes acquired Renergen Limited, South Africa's leading onshore natural gas explorer and integrated producer of liquid helium and liquified natural gas (LNG). Renergen holds a 94.5% stake in Tetra4, which operates the Virginia Gas Project spanning over 187,000 hectares in South Africa's Free State Province. The project benefits from natural gas with average helium concentrations exceeding 3 percent.
The company also holds investments in early-stage drug development companies including IsoBio and Opeongo, acquired East Coast Nuclear Pharmacy in October 2025, and holds a controlling interest in Skyline Builders Group Holding Limited through QLE, which operates civil engineering services in Hong Kong. ASP Isotopes is planning to separate its nuclear fuels business into an independent public company through a listing of Quantum Leap Energy.
Company details
- Sector
- Materials
- Industry
- Chemicals
- Headquarters
- DALLAS, TX
- Fiscal year end
- December
- CIK
- 1921865
- SIC
- 2890
Financial performance, year by year
Fiscal 2022–2025 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns ASP Isotopes Inc. — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Superinvestors in ASP Isotopes Inc. · what they did last quarter
Share of each manager’s reported 13F portfolio. Change is in shares held, since the previous quarter.
Largest fund holders · ASP Isotopes Inc.’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Fund ownership is a subset of institutional 13F ownership — the two describe overlapping populations and must not be added together.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
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