Deep Fission Inc (FISN) Stock Price, Quote & News

Company Profile

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 develo...

Industry: Specialty Industrial Machinery

Sector: Industrials

Phone: (707) 400-0778

Website: deepfission.com

Address:

2001 Addison Street, Suite 300, Berkeley, United States

Nicki001 Aug. 17 at 7:03 PM

$FISN any bad news or why is it trading so low?

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DeepFission Aug. 12 at 3:41 PM

Deep Fission co-founder and CEO Liz Muller recently joined Adnan Belushi on The Nuclear Show for a conversation about our technology, commercialization approach, and what's ahead for the company. ⚛️ If you're interested in how we're working to bring reliable, affordable nuclear energy to market, it's worth a listen. Listen to the whole conversation here 🎙️https://open.spotify.com/show/2DPBAcfR0sq4DAIH2ZSbVF?si=a29bd431ed144d37&nd=1&dlsi=3c636f242f464cd4 #Nuclear #NuclearEnergy #podcast $FISN

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DeepFission Aug. 11 at 7:39 PM

Deep Fission ( $FISN ) is built around a simple premise: the fastest path to expanding nuclear energy is to build upon what already works. ⚛️ Our approach is integration over invention. By leveraging established reactor technology, existing fuel supply chains, and proven operating principles, we are focused on validating a deployment architecture designed to support repeatability, scalability, and commercial viability. Learn more: https://www.deepfission.com/technology 🎥: 1/7 scale model of the Deep Fission Gravity™ Nuclear Reactor canister #Nuclear #NuclearEnergy #AdvancedNuclear #Tech #FISN

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pyroclast Aug. 11 at 3:03 AM

$FISN My guess is that Halliburton will be the drilling contractor.

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invstdwthaple Aug. 10 at 1:23 PM

$FISN Down 43% for the year is generally not considered a great investment. If the company would keep shareholders updated it would be of a great help. Did KDHE approve the hole? Did they find a driller who could can drill a mile hole deep hole with a diameter generally used for surface casing? Is there that much casing available? It's all a guess and guesses don't create confident investments.

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CaptBeer Aug. 9 at 8:11 PM

$FISN if built to power a data center, how close to the reactors do they need to be?

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DeepFission Aug. 7 at 10:28 PM

Our CEO and co-founder Liz Muller joined BNN Bloomberg this morning to discuss our recently approved Nuclear Safety Design Agreement (NSDA) as part of the U.S. Department of Energy’s Reactor Pilot Program. This approval confirms that the foundational safety basis of our Gravity™ Nuclear Reactor design warrants advancement to the next stage of development. She also provides a look at our technology and our pathway to commercialization. Watch it here ➡️ https://www.bnnbloomberg.ca/video/shows/morning-markets/2026/08/07/doe-approves-deep-fission-reactor-design/ #Nuclear #NuclearEnergy $FISN

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ThatDudeWithNoMoney Aug. 7 at 8:38 PM

$FISN $OKLO $ALOY A reminder of what potential $FNUC has. This is a slow climber. 1 year from now, it’ll be +$50 with how things are going.

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pyroclast Aug. 7 at 7:20 PM

$FISN ????? FISN has been a great investment if you waited a couple of weeks until the excitement of the IPO died down and then bought in at a reasonable price. Personally I’m up ca 10% after a couple of days and that’s not bad at all. And the “dream posts” you are complaining about are actually FISN introductions to the the somewhat unique engineering concepts FISN is developing. Personally I find it a positive that FISN is releasing news and information to their investors. Good luck to all!!

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PHARMD09 Aug. 6 at 2:43 PM

$FISN $FNUC $NUCL $OKLO this right here 💪💰💯

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Deep Fission Transcript: Canaccord Genuity's 46th Annual Growth Conference

2026-08-06T12:02:20.000Z - 12 days ago

Deep Fission announces DOE approved NSDA for Gravity Nuclear Reactor

Aug 6, 2026, 7:00 AM EDT - 12 days ago

Department of Energy Approves Nuclear Safety Design Agreement for Deep Fission's Gravity™ Reactor, Designed to Convert to Commercial Operation

2026-08-04T13:10:39.000Z - 14 days ago

Deep Fission initiated with a Buy at Seaport Research

2026-08-04T12:01:57.000Z - 14 days ago

Deep Fission initiated with a Buy at Seaport Research

Aug 3, 2026, 8:30 AM EDT - 15 days ago

Deep Fission CEO Liz Muller to Present at Canaccord Genuity's 46th Annual Growth Conference

Aug 3, 2026, 7:00 AM EDT - 15 days ago

Deep Fission Quarterly report: Q2 2026

2026-07-15T09:40:36.000Z - 4 weeks ago

Deep Fission initiated with a Buy at Canaccord

2026-07-13T11:30:20.000Z - 5 weeks ago

Benchmark starts Deep Fission with a Buy amid small modular reactor race

2026-07-13T10:16:41.000Z - 5 weeks ago

Deep Fission initiated with a Buy at Benchmark

2026-07-07T11:16:15.000Z - 6 weeks ago

Deep Fission announces prototype reactor cansister arrival at Kansas site

Jul 7, 2026, 7:00 AM EDT - 6 weeks ago

Deep Fission Prototype Reactor Canister Arrives at Kansas Site, Advancing Reactor Proof-of-Concept Program

Jun 25, 2026, 3:30 PM EDT - 7 weeks ago

Deep Fission Joins DOE Secretary Wright at Idaho National Laboratory Event to Celebrate Nuclear Innovation

2026-06-24T11:11:09.000Z - 7 weeks ago

Deep Fission announces customer pipeline up to 18.5 GW of generation capacity

Jun 24, 2026, 7:00 AM EDT - 7 weeks ago

Advanced Nuclear Company Deep Fission Announces Customer Pipeline of Up to 18.5 Gigawatts of Generation Capacity

Jun 22, 2026, 4:15 PM EDT - 2 months ago

Advanced Nuclear Company Deep Fission Announces Closing of Public Offering of Common Stock

2026-06-18T14:55:39.000Z - 2 months ago

Deep Fission opens at $16, IPO priced at $16 per share

2026-06-18T10:05:07.000Z - 2 months ago

Deep Fission 2.5M share IPO priced at $16.00

2026-06-18T00:25:21.000Z - 2 months ago

Deep Fission 2.5M share IPO priced at $16.00

Jun 17, 2026, 8:16 PM EDT - 2 months ago

Advanced Nuclear Company Deep Fission Announces Pricing of Public Offering of Common Stock

2026-06-10T19:30:23.000Z - 2 months ago

Deep Fission 2.5M share IPO price range $16.00-$18.00

Jun 1, 2026, 8:00 AM EDT - 2 months ago

Deep Fission Slides: Company presentation

May 20, 2026, 8:18 AM EDT - 3 months ago

Nuclear reactor developer Deep Fission eyes $1.66 billion valuation in US IPO

May 20, 2026, 6:16 AM EDT - 3 months ago

Advanced Nuclear Company Deep Fission Announces Launch of Public Offering of Common Stock

May 20, 2026, 6:08 AM EDT - 3 months ago

Deep Fission IPO Registration Document (S-1)

Nicki001 Aug. 17 at 7:03 PM

$FISN any bad news or why is it trading so low?

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DeepFission Aug. 12 at 3:41 PM

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DeepFission Aug. 11 at 7:39 PM

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pyroclast Aug. 11 at 3:03 AM

$FISN My guess is that Halliburton will be the drilling contractor.

1 · Reply

invstdwthaple Aug. 10 at 1:23 PM

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CaptBeer Aug. 9 at 8:11 PM

$FISN if built to power a data center, how close to the reactors do they need to be?

1 · Reply

DeepFission Aug. 7 at 10:28 PM

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ThatDudeWithNoMoney Aug. 7 at 8:38 PM

$FISN $OKLO $ALOY A reminder of what potential $FNUC has. This is a slow climber. 1 year from now, it’ll be +$50 with how things are going.

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pyroclast Aug. 7 at 7:20 PM

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PHARMD09 Aug. 6 at 2:43 PM

$FISN $FNUC $NUCL $OKLO this right here 💪💰💯

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ThatDudeWithNoMoney Aug. 6 at 2:11 PM

Just in case if anyone was wondering who owns and holds $FNUC. See yall at +$10 in a few months $OKLO $FISN $NUCL

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ThatDudeWithNoMoney Aug. 6 at 1:22 PM

$OKLO $FISN in 2 years, this will be $FNUC as well. Nuclear feels like the future and will be the future.

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DeepFission Aug. 6 at 1:06 PM

JUST IN ➡️ The U.S. Department of Energy (DOE) has approved Deep Fission's Nuclear Safety Design Agreement (NSDA) for our Gravity™ Nuclear Reactor. This marks an important regulatory milestone under the DOE's Reactor Pilot Program, confirming that the foundational safety basis of our reactor design warrants advancement to the next stage of development. Our Parsons, Kansas, project is not designed as a one-time criticality demonstration. Our intent is for the demonstration reactor to transition to a fully Nuclear Regulatory Commission-licensed commercial operating unit, delivering electricity after initial testing and DOE authorization. This reflects our commitment to building a direct, credible path from demonstration to commercial deployment. Learn more: https://www.deepfission.com/pr-media-kit/press-releases/detail/116/department-of-energy-approves-nuclear-safety-design-agreement-for-deep-fissions-gravity-reactor-designed-to-convert-to-commercial-operation $FISN #Nuclear #AdvancedNuclear #tech

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invstdwthaple Aug. 5 at 5:37 PM

$FISN Hasn't been a good investment so far. No point in averaging down. Company wastes time on dream posts rather than current activities.

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DeepFission Aug. 5 at 4:48 PM

What if the future of nuclear energy isn’t about reinventing the reactor, but rethinking where and how we deploy it? At Deep Fission $FISN, we’re building on what already works. Our Gravity™ Nuclear Reactor is designed to integrate proven technologies to reduce cost, complexity and surface footprint. ⚛️ This isn’t about starting from scratch; it’s about integrating what we already know into something powerful. Curious how it will all come together? Learn more ➡️ https://www.deepfission.com/technology

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DeepFission Aug. 4 at 4:12 PM

"The problem is not that nuclear does not work. It's that, in the United States, it became too slow, too complicated, and too expensive to build." Deep Fission $FISN CEO and co-founder Liz Muller shares why commercial deployment—not reinventing nuclear—is critical to meeting America's growing energy needs. Explore Inc.'s look at where American innovation is headed ➡️ https://www.inc.com/leah-carroll/the-great-american-state-fair-skipped-ai-and-crypto-but-gave-founders-plenty-of-hints-about-the-next-250-years/91363732 #NuclearEnergy

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DeepFission Aug. 3 at 3:25 PM

Deep Fission $FISN CEO and Co-founder Liz Muller will present at Canaccord Genuity's 46th Annual Growth Conference in Boston on Tuesday, Aug. 11, at 1:30 p.m. ET, sharing our technology and commercialization approach. Watch the live webcast: https://event.summitcast.com/view/WuFmFdTcA9mVsUGHZJFU62/guest_book?session_id=jNPjkVyHtk3o3QsgK8w7Ph Investor meeting details: https://www.deepfission.com/pr-media-kit/press-releases/detail/115/deep-fission-ceo-liz-muller-to-present-at-canaccord-genuitys-46th-annual-growth-conference

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Jwa68 Jul. 31 at 7:40 PM

$FISN If you like this company, might add $DBHL to your watchlist. It should eventually trade closer to the price here once some of the legacy early shares get cleaned up and they move to likely list on Nasdaq. Stock has pulled back to the last large financing round price around 3 where it should find some support and interest. Likely good asymmetric risk around that level. Both Deep Fission and Deep Isolation were co-founded by the father-daughter duo Elizabeth (Liz) Muller and Richard A. (Rich) Muller. Key Founders Elizabeth (Liz) Muller: Serves as the CEO and co-founder of Deep Fission and previously served as CEO of Deep Isolation, where she remains as Board Chair. Richard A. (Rich) Muller: A physics professor emeritus at the University of California, Berkeley, who co-founded both companies and serves as Chief Technology Officer (CTO) of Deep Fission.

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DeepFission Jul. 29 at 7:27 PM

Ringing the @Nasdaq Closing Bell earlier this month was an incredible experience for our team. $FISN At @DeepFission, we're building on proven pressurized water reactor technology with an innovative underground deployment approach designed to help make nuclear energy more practical to deploy. Every milestone moves us one step closer to commercialization and our goal of delivering reliable, affordable nuclear energy. Learn more: https://www.deepfission.com/investors

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Jwa68 Jul. 29 at 9:54 AM

$DBHL $FISN $NNE $SMR Nuclear is the future and space has seen a significant retracement.

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Jwa68 Jul. 22 at 12:15 PM

$DBHL You cannot see growth in nuclear absent a safe way to discard the waste. Doesn't matter who is producing it, $FISN $NNE or $SMR, they all need Deep Isolations solution. They are like the Intel inside, ubiquitous to the entire space. If you believe in the future role of nuclear as a primary source of energy, you also must fundamentally appreciate where a company like this is integral to that evolution. https://www.wsj.com/world/middle-east/trump-approves-landmark-nuclear-deal-with-saudi-arabia-in-big-win-for-kingdom-2ed77584?st=kyfGL9&reflink=article_whatsapp_share

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HarperLucky Jul. 21 at 11:17 PM

$FISN The company’s underground reactor concept is designed to use the surrounding geology as an additional safety barrier, potentially reducing surface footprint and some traditional nuclear risks.

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Market Cap	478.32M
Revenue (ttm)	0.00
Net Income (ttm)	-61.00M
EPS (ttm)	N/A
PE Ratio	0.00
Forward PE	N/A
Profit Margin	0.00%
Debt to Equity Ratio	0.00

Volume	236,200
Avg Vol	N/A
Day's Range	N/A - N/A
Shares Out	58.91M
Stochastic %K	9%
Beta	N/A
Analysts	Strong Sell
Price Target	$21.00