Deep Fission, Inc. (FISN)

Industrials · NGM

$5.13-2.29% today

Price as at 1 Oct 2026, 11:01 UTC. Quotes are delayed.

Fundamentals

Market cap$590.66M
Return on equity-188.5%
52-week range$5.05 to $19.00

Valuation and ratings

Fair value estimate$3.92
Upside to fair value-23.6%
Analyst target (mean)$19.00
Analyst range$18.00 to $20.00
Analysts with price targets2
Consensus viewstrong buy
Moat score12/100
Overall rating10/100, very low quality

Fair value: $3.92 (-23.6%), see how we got there

Deep Fission, Inc. trades at $5.13, which is 24% above the $3.92 our fair value estimate puts on the business. On that measure it screens as expensive, which is not the same as saying it will fall.

Our moat model scores it 12 out of 100, which is little in the way of a moat. A moat is a structural reason competitors cannot take the profits away, and it matters more to a long holding period than any single quarter's numbers do.

FISN earnings and analyst estimates

EPS estimate, next year-$2.11
Expected EPS growth+46.2%
Expected revenue growth0.0%

Recommendation mix, 2 published ratings

2 buy0 hold0 sell

Estimates are the published analyst consensus and move often. An earnings date is scheduled, not certain, and a share tends to reprice most violently on the day itself.

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.

Industry: Specialty Industrial MachineryEmployees: 51HQ: United States

Company profile, industry and headcount are as reported by our data provider and can lag a company's own filings by a reporting period. The annual report is the authority.

FISN passes 1 of our 30 screens today

Each screen prints the exact criteria it used, and the circumstances in which it is wrong.

FISN peers

The largest companies in the same industry (Specialty Industrial Machinery), then in the same sector.

Every industrials company we cover is on the Industrials hub.

Common questions

Is Deep Fission, Inc. (FISN) undervalued?

Against our fair value estimate of $3.92, FISN at $5.13 is 24% above fair value. That is one model's answer, not a recommendation. It is built from normalized earning power with growth capped deliberately low, which understates companies whose value is mostly future growth.

Where does SteadyShares get its FISN data?

Fundamentals for FISN come from company filings and exchange data, as listed on NGM; institutional ownership comes from SEC 13F filings. The share price shown was last refreshed on 1 Oct 2026, 11:01 UTC and is delayed. Our data quality score for this company is 71/100, which is the share of the inputs behind our scores that were actually available rather than assumed. Metrics we do not hold are left out of the page rather than estimated.

The full research page for FISN, with financial statements, ownership detail, peer comparison and alerts, is free inside the app.

Data from company filings, exchange quotes and SEC EDGAR 13F disclosures. Quotes are delayed. Metrics we do not have are left out rather than estimated. Educational information, not financial advice.