FISN Deep Fission, Inc.
NASDAQActiveCommon stock
FISN is the ticker symbol of Deep Fission, Inc., which is listed on NASDAQ.
FISN at a glance
- Symbol
- FISN
- Company / issuer
- Deep Fission, Inc.
- Security type
- Common stock
- Exchange
- NASDAQ
- Status
- Actively traded
- Seen in listing files
- Jun 2026 – present
- Sector
- Utilities
- Industry
- Electric Utilities: Central
- Country
- United States
- IPO year
- 2026
- Market cap
- $409.4 million (Sep 2026)
Deep Fission, Inc. company profile
- Industry (SIC)
- Electric Services
- Headquarters
- Berkeley, CA
- Incorporated in
- DE
- Fiscal year end
- December 31
- SEC filer category
- <br>Emerging growth company
- Latest annual report
- 10-K filed 2026-04-15
- Latest interim report
- 10-Q filed 2026-08-03
- SEC CIK
- 1918102
Former company names
- Surfside Acquisition Inc. (until 2025)
Source: SEC EDGAR filer data.
FISN price chart
Interactive chart provided by TradingView (loads third-party scripts).
Frequently asked questions
What company has the ticker symbol FISN?
FISN is the ticker symbol of Deep Fission, Inc on NASDAQ.
Is FISN still trading?
Yes. FISN appears in the current NASDAQ listings as of Sep 2026.
Which exchange is FISN listed on?
FISN is listed on NASDAQ.
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