Deep Fission, Inc. (FISN) Stock

Industrials · Specialty Industrial Machinery · Member of Other US Stocks

Deep Fission, Inc. (FISN) closed at USD 3.85 on 2026-10-14, a change of -73.6 % over the past year, with a market capitalization of USD 215.01M.

Deep Fission, Inc. recent closing prices

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Deep Fission, Inc. key figures

Previous close

USD 3.85 (2026-10-14)

1-year change

-73.6 %

Market cap

USD 215.01M

Enterprise value

USD 122.05M

P/E ratio (trailing)

-2.15

P/E ratio (forward)

-2.70

EPS (trailing)

-1.70

EPS (forward)

-1.35

PEG ratio

n/a

Price to book

2.21

Revenue growth

n/a

Earnings growth

n/a

Dividend per share (trailing)

0.00

Short ratio

4.20

Employees

51

Analyst consensus (third-party)

none

Source: Yahoo Finance via yfinance. Data may be delayed, incomplete or incorrect.

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.

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