Deep Fission, Inc. (FISN)

NASDAQ: FISN · Real-Time Price · USD
10.75
+0.72 (7.18%)
At close: Jun 26, 2026, 4:00 PM EDT
10.97
+0.22 (2.05%)
After-hours: Jun 26, 2026, 7:00 PM EDT
7.18%
Market Cap 648.58M
Revenue (ttm) n/a
Net Income (ttm) -79.21M
Shares Out 60.33M
EPS (ttm) -2.27
PE Ratio n/a
Forward PE n/a
Dividend n/a
Ex-Dividend Date n/a
Volume 591,698
Open 10.40
Previous Close 10.03
Day's Range 9.74 - 11.43
52-Week Range 7.66 - 19.00
Beta n/a
Analysts n/a
Price Target n/a
Earnings Date n/a

About FISN

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. T... [Read more]

Industry Uranium
Sector Energy
IPO Date Jun 18, 2026
Employees 51
Stock Exchange NASDAQ
Ticker Symbol FISN
Full Company Profile

Financial Performance

Financial Statements

News

Deep Fission Joins DOE Secretary Wright at Idaho National Laboratory Event to Celebrate Nuclear Innovation

IDAHO FALLS, Idaho--(BUSINESS WIRE)--Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors install...

1 day ago - Business Wire

Deep Fission announces customer pipeline up to 18.5 GW of generation capacity

Deep Fission (FISN) announced it has signed Letters of Intent with data centers, co-developers, industrial parks, and strategic partners representing up to 18.5 gigawatts, GW, of potential generation ...

2 days ago - TheFly

Advanced Nuclear Company Deep Fission Announces Customer Pipeline of Up to 18.5 Gigawatts of Generation Capacity

BERKELEY, Calif.--(BUSINESS WIRE)--Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors installed...

2 days ago - Business Wire

Advanced Nuclear Company Deep Fission Announces Closing of Public Offering of Common Stock

BERKELEY, Calif.--(BUSINESS WIRE)--Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors installed...

4 days ago - Business Wire

Deep Fission opens at $16, IPO priced at $16 per share

Deep Fission (FISN) priced 2.5M shares at $16.00. The deal range was $16.00-$18.00. Benchmark, Seaport Research and Maxim acted as joint book running managers for the offering. Deep Fission is…

8 days ago - TheFly

Deep Fission 2.5M share IPO priced at $16.00

The deal range was $16.00-$18.00. Benchmark, Seaport Research and Maxim acted as joint book running managers for the offering.

8 days ago - TheFly

Deep Fission 2.5M share IPO priced at $16.00

The deal priced at low end of reduced $16.00-$18.00 range. William Blair, Stifel and Canaccord are acting as joint book running managers for the offering.

8 days ago - TheFly

Advanced Nuclear Company Deep Fission Announces Pricing of Public Offering of Common Stock

BERKELEY, Calif.--(BUSINESS WIRE)--Deep Fission, Inc. (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors installed one mile under...

8 days ago - Business Wire

Deep Fission 2.5M share IPO price range $16.00-$18.00

Benchmark, Seaport Research and Maxim are acting as joint book running managers for the offering.

16 days ago - TheFly

Nuclear reactor developer Deep Fission eyes $1.66 billion valuation in US IPO

Deep Fission said on Wednesday it is targeting a valuation of about $1.66 billion in ​its U.S. initial public offering, looking to ride ‌a wave of investor demand for nuclear power as AI-fueled electr...

5 weeks ago - Reuters

Advanced Nuclear Company Deep Fission Announces Launch of Public Offering of Common Stock

Deep Fission, Inc., an advanced nuclear energy company developing small modular pressurized water reactors installed one mi...

5 weeks ago - BUSINESS WIRE

Deep Fission IPO Registration Document (S-1)

Deep Fission has filed to go public with an IPO on the NASDAQ

5 weeks ago - SEC