DEEP FISSION FISN

 — 
6.25 (0.70) (10.07%) as of 25 Sep
Market cap
$409.4M
P/E
—

Insider Decisions

in millions of $
Nov 25 Feb 26 May 26 Aug 26
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Capital & Financial Ratios

Market Cap 409.40
Revenue —
Net Income —
Free Cash Flow —
Net Debt —
Current Ratio —
Debt/Equity —
P/E ratio —
P/S ratio —
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Past 5Y EPS Growth —
This Y EPS Growth —
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Next 5Y EPS Growth —
in millions of $

Dividends

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Assets vs Liabilities

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in millions of $

Compound Annual Growth

10y 5y 3y
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Revenue

Year
in millions of $ · fiscal quarters ending in the months shown

Operating Cash Flow

Year
in millions of $ · fiscal quarters ending in the months shown

Free Cash Flow

Year
in millions of $ · fiscal quarters ending in the months shown

EPS

Year
fiscal quarters ending in the months shown

Target Price Range

Analyst price targets

Recommendation Rating

1
1Buy 2 3Hold 4 5Sell
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028
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Analyst estimates 2026–2028

Powerpack
Low Price
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High Price
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Employees
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Revenue/Emp
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EBT
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Shares
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PE Ratio
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Capex
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ROA
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ROIC
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ROE
predictions in italic, sparklines do not include predictions

All 10 years →

DEEP FISSION (FISN) Latest News

News by impact score

Fine-tune

25 Sep

3

Deep Fission, Inc. rejected a short-seller report criticizing its Gravity™ Nuclear Reactor and underground borehole deployment. The company says the report is highly misleading and contains distortions, inaccuracies and mischaracterizations, and notes the disclaimer that its author offers opinions, not facts. Deep Fission asserts transparency with shareholders, regulators and the public, citing SEC filings as evidence. CEO Elizabeth Muller vows to correct the record and pursue all options, including legal remedies, while the team continues advancing the project. The company is reviewing the report and its impact on strategy. Deep Fission’s first reactor project is in Parsons, Kansas, and it was selected for the U.S. Department of Energy’s Reactor Pilot Program. The release reiterates typical forward-looking statements and risk factors around early-stage development and non-binding LOIs. Adverse short-seller claims and looming legal responses could weigh on sentiment and near-term trading for FISN.

21 Sep

4

Deep Fission, Inc. and Youngquist Brothers, LLC will jointly test drilling technologies and borehole-construction methods for Deep Fission's Gravity Nuclear Reactor, an SMR designed to be installed roughly one mile underground in a water-filled borehole. The collaboration follows a September 3 field demonstration in Fort Myers where a 30-inch prototype reactor canister was lowered into a 34-inch borehole to about 100 feet to test installation and retrieval mechanics. Youngquist brings decades of large-diameter borehole drilling experience; the teams aim to advance methods for deeper, larger-diameter boreholes to support deployment. Deep Fission plans commercial deployment as early as 2027 and is advancing its first reactor project in Parsons, Kansas, with recognition in the DOE Reactor Pilot Program. Risks include technical, regulatory, and supply-chain factors. Potential to significantly accelerate deployment capabilities and investor sentiment by enabling practical deep-borehole SMR installation.

15 Sep

4

Deep Fission publishes DOE-approved nuclear safety design agreement for Gravity™ Pilot Reactor, demonstrating commitment to transparency. DOE-approved safety agreement advances regulatory clearance for Gravity pilot reactor.

10 Sep

4

Deep Fission installs and retrieves full-scale reactor canister using off-the-shelf drilling equipment. Full-scale canister test with standard drilling gear validates Deep Fission reactor deployment method and speeds commercialization path.

27 Aug

4

US Army advances nuclear power breakthroughs via DEEP FISSION (FISN) microreactor tech for remote military bases. Army-backed nuclear deployment accelerates DEEP FISSION commercialization and defense contracts.

19 Aug

4

Deep Fission targets grid power delivery from its first underground nuclear reactor in 2027. Targeting 2027 grid power from first underground reactor marks a major strategic milestone for commercial deployment.

13 Aug

4

Deep Fission sets 2027 target for debut of underground nuclear reactors. 2027 underground reactor debut target marks major product launch timeline with potential to reshape company trajectory.

6 Aug

4

Department of Energy approves nuclear safety design agreement for Deep Fission's Gravity™ Reactor designed to convert to commercial operation. DOE safety design approval advances Gravity™ Reactor toward commercial operation and market deployment.

7 Jul

4

Deep Fission prototype reactor canister arrives at Kansas site, advancing reactor proof-of-concept program. Prototype canister arrival advances core reactor development and supports future milestones.

25 Jun

3

Deep Fission joins DOE Secretary Wright at Idaho National Laboratory event to celebrate nuclear innovation. High-level DOE event participation raises nuclear sector visibility and potential partnership prospects.

24 Jun

4

Deep Fission announces customer pipeline of up to 18.5 gigawatts of generation capacity. Pipeline announcement of 18.5 GW signals major growth potential for Deep Fission.

22 Jun

3

Deep Fission closes public offering of common stock. Public stock offering supplies operating capital but increases share dilution.

17 Jun

3

Deep Fission prices public offering of common stock. Public offering raises capital for operations but dilutes shares and pressures near-term stock performance.

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