Deep Fission, Inc. (FISN)
NASDAQ (NMS) NASDAQ (NMS) Primary 
Deep Fission Targets 2027 Grid Power From First Underground Nuclear Reactor
Deep Fission NASDAQ: FISN is targeting commercial electricity generation from its first underground nuclear reactor in Parsons, Kansas, by the end of 2027, Chief Executive Officer Liz Muller said during a company presentation.
Deep Fission Targets 2027 Debut for Underground Nuclear Reactors
Deep Fission NASDAQ: FISN is pursuing an underground approach to advanced nuclear power, with plans to place pressurized water reactors in boreholes roughly a mile below the surface, Co-Founder and CEO Liz Muller said at Canaccord Genuity's 46th annual growth conference.
Deep Fission: Customer Pipeline Of 18.5GW Is Unlikely To Be A Stock Upside Catalyst
Deep Fission is rated 'Hold' due to limited operating history, no revenue, and a multi-year path to commercialization. FISN targets small modular nuclear reactors using established pressurized water technology, with DoE backing and pilot program inclusion. Significant capital requirements, expected equity dilution, and cash burn are key risks until commercialization, projected in three years.
Deep Fission: Deployment Not A Criticality Experiment
Deep Fission is not primarily trying to reinvent reactor physics; it is attempting to commercialize a borehole deployment model using conventional PWR technology, standard LEU fuel, and established drilling methods. The post-IPO weakness appears driven more by technical selling, limited market awareness, and development-stage skepticism than by a material change in the company's commercial roadmap. Deep Fission's DOE Reactor Pilot Program path is differentiated because the company is advancing the reactor configuration that management intends to commercialize, not merely pursuing a standalone criticality experiment.
