Deep Fission, Inc.

FISN · NasdaqGM · Stock · Industrials
$3.78
-5.86% today
Delayed price,

What Deep Fission does

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.

Key facts

Sector
Industrials
Industry
Specialty Industrial Machinery
Market cap
$222.4M
P/E (ttm)
—
Forward P/E
-2.8
Dividend yield
0.00%
Beta
—
Profit margin
0.0%
Employees
51
Headquarters
Berkeley, CA, United States
Exchange
NasdaqGM

Performance

1 Month
-55.4%
3 Months
-64.6%
6 Months
—
1 Year
-74.1%
5 Years
-59.9%
$3.6352-week range$19.00
Biggest setback — last 12 months
-74.1%
15 Jun 2026 → 14 Oct 2026
Fell from $14.56 to $3.78 — its sharpest sustained decline this year.
Biggest run-up — last 12 months
+29.1%
24 Aug 2026 → 14 Sept 2026
Ran from $6.56 to $8.47 — its strongest sustained advance this year.

Price outlook — trend & volatility model

● Trend: Mixed
Price is not consistently aligned with its short- and long-term averages.
HorizonBear case (−1σ)Base caseBull case (+1σ)
1 Month$2.85 (-24.5%)$3.78$5.00 (+32.4%)
3 Months$2.32 (-38.5%)$3.78$6.14 (+62.7%)
6 Months$1.90 (-49.7%)$3.78$7.51 (+99.0%)
12 Months$1.43 (-62.2%)$3.78$9.99 (+164.6%)
Statistical, not machine-learning: a random-walk (no assumed drift) volatility model built from this ticker's own realized price history, plus a purely descriptive moving-average trend read. Illustrative only — not a price target and not financial advice. The bear and bull cases sit one standard deviation (1σ) below and above today's price, a range that covers about 68% of the outcomes the model treats as plausible, not a 68% chance of either case. Annualized volatility used: 97.3%, blended from this ticker's own 3-month and 1-year realized price history. Base case is deliberately flat — this quantifies a possible range, not a directional prediction. See the full model, including wider (≈95%) bands →

Comparable companies

Learn the basics

Prices and company data are delayed reference figures from public sources (Yahoo Finance, SEC EDGAR) and may be inaccurate or out of date. This page is informational only — it is not investment advice or a recommendation to buy or sell any security. Past performance does not indicate future results.