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FISNDeep Fission, Inc. Common Stock

CSNasdaq (XNAS)·USD

Identity

Security key
15378
Ticker
FISN
Type
CSCommon Stock
Exchange
Nasdaq(XNAS)
Venue group
NASDAQ
Operating MIC
XNAS
Market
stocks
Locale
us
Currency
USD
Listed
2026-06-18
Round lot
100
Active
Yes
Last seen in a load
2026-08-14 20:49
Vendor updated
2026-08-13 06:09
Ticker root / suffix
FISN

Detail

Enriched 2026-08-14 20:47

Market cap
$491,275,522.92
Shares outstanding (class)
Shares outstanding (weighted)
58,905,938
SIC
4911 ELECTRIC SERVICES
Employees
Location
BERKELEY, CA
Description

Deep Fission Inc is a nuclear energy technology company developing a small modular reactor based on established pressurized water reactor technology, with novel emplacement in deep boreholes approximately one mile below the Earth's surface. Its reactor, which is referred to as the Gravity Reactor, will leverage subsurface conditions to support key containment and operating functions, including the use of hydrostatic pressure from a water column within the borehole to support reactor operating pressure and cooling, and the surrounding geological formation to provide structural confinement and shielding. The group's focus is within the United States, where electricity demand growth, expanding digital infrastructure, and evolving energy policy.

Market cap and share counts drift.

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