Deep Fission, Inc.
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Range $17 – $25
Price Chart
About the company
Deep Fission Nuclear, Inc. engages in the provision of nuclear energy through underground nuclear reactor. It uses clustered boreholes as a containment system.
- CEO
- Elizabeth Muller
- IPO
- 2026
- Employees
- 51
- HQ
- Berkeley, CA, US
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- Market Cap
- $330.02M
- P/E
- -2.30
- PEG
- 0.04
- P/S
- 0.00
- P/B
- 3.05
- EV/EBITDA
- -3.35
- Div Yield
- 0.00%
- Gross Margin
- 0.00%
- Op Margin
- 0.00%
- Net Margin
- 0.00%
- ROE
- -177.70%
- ROIC
- -72.17%
Latest fiscal year · YoY change
- Revenue
- $0+0.0%
- Gross Profit
- $0+0.0%
- Op Income
- $-21,384,169
- Net Income
- $-61,002,954+0.0%
- EPS
- $-1.01+0.0%
- OCF Growth
- +0.0%
- FCF Growth
- +0.0%
- 52W High
- $19.00
- 52W Low
- $4.90
- 50D MA
- $7.59
- 200D MA
- $8.72
- Beta
- 4.66
- RSI (14)
- 36
- Avg Volume
- 266.92K
No earnings-call transcripts are available for FISN yet.
- Free Float
- 53.9%
- Shares Outstanding
- 60.33M
- Float Shares
- 32.50M
of shares held by institutions
22 13F filers
Top institutional holders
Largest 13F positions, with quarter-over-quarter change.
| Holder | Shares | Δ Quarter |
|---|---|---|
| Blue Owl Capital Holdings LP | 1.33M | ▲ 1.33M |
| Elevation Wealth Management LLC | 298.33K | ▲ 298.33K |
| Ubs Group AG | 198.50K | ▲ 198.50K |
| Consolidated Press International Holdings Ltd | 133.33K | ▲ 133.33K |
| Citadel Advisors LLC | 110.00K | ▲ 110.00K |
| Lpl Financial LLC | 70.86K | ▲ 70.86K |
| Geode Capital Management, LLC | 27.33K | ▲ 27.33K |
| Essential Investment Partners LLC | 26.40K | ▲ 26.40K |
| Chapin Davis, Inc. | 19.00K | ▲ 19.00K |
| Goldman Sachs Group Inc | 17.37K | ▲ 17.37K |
| Bhk Investment Advisors, LLC | 15.00K | ▲ 15.00K |
| Prelude Capital Management, LLC | 14.71K | ▲ 14.71K |
Held by 12 ETFs
Biggest fund positions in FISN by dollar value.
Recent insider transactions
Who's buying, who's selling, and how much.
| Date | Insider | Type | Shares |
|---|---|---|---|
| Jul 23, 26 | GLANVILLE THOMAS S | other | 19,156 |
| Jul 23, 26 | JANOVER BLAKE | other | 18,962 |
| Jul 23, 26 | Goldman Tepper Leslie | other | 19,204 |
| Jul 23, 26 | Angell Jonathon | other | 16,973 |
| Apr 20, 22 | Tompkins Mark N. | other | 0 |
| Apr 20, 22 | Jacobs Ian Seth | other | 0 |
A “Sell” may be a pre-scheduled 10b5-1 plan sale rather than a discretionary decision — read insider selling with that in mind.
Our FISN coverage
Recent articles, reports, and earnings notes.
NuCube Energy SPAC Merger: Nuclear Hype Meets a Cash Clock
NuCube Energy is an advanced-nuclear microreactor developer going public through a merger with Launch Two Acquisition Corp. (Nasdaq: LPBB), with the deal expected to close in the second half of 2026. The bull case is AI data-center and industrial power demand; the bear case is a pre-revenue nuclear story facing heavy redemption and dilution risk.
Deep Fission IPO: The Bull and Bear Case for a Deep-Borehole Reactor
Deep Fission, Inc. (NASDAQ: FISN) is expected to list on 2026-05-29 at a $24.00-$26.00 price range. The company is pitching a deep-underground nuclear reactor for AI, data centers, and heavy industry, but it is still pre-revenue and capital hungry.
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INVESTOR ALERT: Pomerantz Law Firm Investigates Claims on Behalf of Investors of Deep Fission, Inc. - FISN
globenewswire.com · Oct 6
DEEP FISSION, INC. (NASDAQ: FISN) INVESTIGATION: Johnson Fistel Investigates Potential Securities Claims Following Short-Seller Report
globenewswire.com · Oct 5
FISN Investors Have Opportunity to Join Deep Fission, Inc. Fraud Investigation with SBS Law
gurufocus.com · Oct 4
FISN Investors Have Opportunity to Join Deep Fission, Inc. Fraud Investigation with SBS Law
businesswire.com · Oct 4
Deep Fission Schedules Business Update Call on Tuesday, October 20, 2026
businesswire.com · Oct 1
INVESTOR ALERT: Pomerantz Law Firm Investigates Claims On Behalf of Investors of Deep Fission, Inc. - FISN
prnewswire.com · Oct 1
INVESTOR ALERT: Pomerantz Law Firm Investigates Claims On Behalf of Investors of Deep Fission, Inc. - FISN
globenewswire.com · Sep 29
FISN Investor Alert: Deep Fission Securities Investigation - Kehoe Law Firm, P.C.
globenewswire.com · Sep 29
Headlines from third-party outlets — TickerSpark isn't affiliated with these sources.