NASDAQ · Specialty Industrial Machinery · USD

Deep Fission, Inc. (FISN) Stock Analysis

Deep Fission, Inc. (FISN) is a Specialty Industrial Machinery stock listed on NASDAQ and quoted in US Dollar.

FISN

$7.15

+$0.01 (+0.14%)

Sep 4, 2026 · Market close

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Price History

Hover for the daily close. The dotted line marks the period open.

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FISN Key Statistics

As of Sep 4, 2026

Trading

Open: $7.20
Previous Close: $7.14
Day's Range: 7.04–7.38
52-Week Range: 6.10–19.00
Volume: 159.45K

Valuation

Market Cap: $421.18M
P/E Ratio: unprofitable
EPS (ttm): −1.78

Financials (FY)

Revenue (FY): $0.00
Net Income (FY): −$61.00M
Profit margin: 0.00%
Shares Outstanding: 58.91M

Dividend and dates

Avg Volume: 331.69K

Only metrics the company reports are shown. Data provided by Yahoo Finance via yfinance. Updated daily.

FISN Revenue and Earnings by Fiscal Year

FY ends December

Fiscal year	Revenue	Net income	Net margin
2025	$0.00	−$61.00M	—
2024	$0.00	−$5.71M	—

Fiscal year	Revenue	Gross profit	Operating income	Net income	Net margin
2025	$0.00	—	−$21.38M	−$61.00M	—
2024	$0.00	—	−$4.10M	−$5.71M	—

Annual figures as reported, in the company's reporting currency. As of December 31, 2025.

FISN Valuation vs Specialty Industrial Machinery Median

Median of 85 stocks

Metric	FISN	Specialty Industrial Machinery median	vs median
Profit margin	0.00%	5.35%	5.3 pts below

Medians across 85 Specialty Industrial Machinery stocks that report the metric. Medians, not averages, so one outlier cannot move them. As of September 4, 2026.

Analysis

Data-derived

Company Overview

Deep Fission, Inc. (FISN) carries a market capitalisation of $421.18M. It is classified in the Specialty Industrial Machinery industry, within the Industrials sector. The company reports 51 employees.

The 52-week range on file runs from $6.10 to $19.00. The most recent close on file for FISN is $7.15, dated September 4, 2026. That is +$0.01 (+0.14%) against the previous close. The latest close sits 17.21% above that 52-week low.

Financial Health

In fiscal 2025, Deep Fission, Inc. reported revenue of $0.00. The same year closed with a net loss of $61.00M. The reported profit margin is 0%. That is 5.3 percentage points below the Specialty Industrial Machinery median of 5.35%. Trailing earnings per share are −1.78.

Valuation Assessment

No trailing P/E applies: the last reported earnings figure is negative.

Growth & Income

No dividend is on file for FISN.

2026 is still running; the price is −50.89% year to date.

Peer Comparison

Deep Fission, Inc. (FISN) operates in the Specialty Industrial Machinery industry. Here is how it compares to its closest peers by market capitalization:

Company	Ticker	Market Cap	P/E Ratio
Deep Fission, Inc.	FISN	$421.18M	—
GE Vernova Inc.	GEV	$250.87B	27.0
Eaton Corporation plc	ETN	$159.57B	41.8
Parker-Hannifin Corporation	PH	$121.33B	33.8

The Specialty Industrial Machinery industry average P/E ratio is 31.7x. Deep Fission, Inc. has no P/E ratio because it is not currently profitable.

Every figure above is read from this page's own data on each nightly rebuild. Informational only, not financial advice. As of September 4, 2026.

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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.

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