Deep Fission, Inc. Common Stock (FISN)

Deep Fission, Inc. Common Stock (FISN) is a Specialty Industrial Machinery company in the Industrials sector listed on the NASDAQ.

As of Oct 23, 2026: market cap $328M; returns 1 day -4.6%, 1 week -33.3%.

Deep Fission, Inc. (FISN) is a development-stage advanced nuclear energy company that pioneered the Gravity Nuclear Reactor, a system that places conventional small modular pressurized water reactors (PWR) one mile underground in 30-inch boreholes.

Groups FISN belongs to

• Recent IPOs
• Nuclear Energy
• Small Modular Reactors (SMRs)
• Power Generation
• Clean Energy
• Energy Infrastructure
• Clean Energy Transition
• Decarbonization
• Industrial Technology
• Data Centers

FISN financial model: income statement, cash flow and balance sheet