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Deep Fission, Inc FISN

Industrials · Utilities

$3.45last close 2026-10-16 · market cap $215.01M · delayed data

Trailing returns

1M-51.41%
3M-67.17%

Basis: Adjusted daily closes.

What it 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.

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Valuation, cost of capital, SEC filings, ownership and more, with the source named on every figure.

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Where these figures come from

Delayed data. Not financial advice. Figures are read from the sources above at the dates shown; nothing here is a recommendation. Disclosures · All companies