Deep Fission, Inc. (FISN) Stock

NASDAQ: FISNIndustrials company in the specialty industrial machinery industry, based in Berkeley, CA.

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FISN stock quote & key statistics

Deep Fission earnings per share

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Deep Fission revenue & net income

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Deep Fission annual financials

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Deep Fission, Inc. revenue, net income and EPS by fiscal year
Fiscal yearRevenueNet incomeEPS
FY2025$0-$61.0M—
FY2024$0-$5.7M—

Fiscal year ending December 31. Source: company filings via EODHD.

About Deep Fission, Inc.

Deep Fission, Inc. develops and deploys small modular nuclear reactors placed deep underground to generate electricity. The company provides small modular nuclear reactors designed for underground installation at a depth of one mile, offering carbon-free energy and capacity solutions. It delivers scalable reactor configurations for onsite power needs or flexible offtake agreements in wholesale power markets, manages the licensing process with regulatory authorities, and supports strategic development for decarbonization and reliability goals.

The company also provides advisory and partnership services for deployment and operation of its reactor technology, using artificial intelligence to streamline operations. Deep Fission serves utilities, data centers, heavy industry, the military, government, and large cities. The company was founded in 2023 and is based in Berkeley, California.

Deep Fission stock FAQ

What is the Deep Fission stock ticker symbol?

Deep Fission, Inc. trades on the NASDAQ under the ticker symbol FISN.

What sector and industry is Deep Fission in?

Deep Fission, Inc. is classified in the Industrials sector, Specialty Industrial Machinery industry.

How many employees does Deep Fission have?

Deep Fission, Inc. has about 51 full-time employees.

What were Deep Fission's revenue and earnings last fiscal year?

Deep Fission reported revenue of $0 and net income of -$61.0M in fiscal 2025.

When did Deep Fission go public?

Deep Fission stock began trading on June 18, 2026.

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