Stock listing
NASDAQ:FISN Deep Fission, Inc. Stock
Home listing (NASDAQ) of Deep Fission, Inc.
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Share price · NASDAQ:FISN
$2.67 USD -0.37 (-12.2%)
Close on Oct 30, 2026
- Day range
- $2.50 – $2.95 USDOct 30, 2026
- Volume
- 450,147 sharesOct 30, 2026
- Market cap
- $157.3M USDAt the close on Oct 30, 2026 · price × 58.91M shares outstanding
- Traded on an average day
- $2.14M USDMedian day 294,900 shares · last 3 months, Jul 30, 2026 – Oct 30, 2026
Prices by listing
| Listing | Last | Change | Volume | Open | High | Low | Previous close | Price from |
|---|---|---|---|---|---|---|---|---|
| NASDAQ:FISN · Home | $2.67 USD | -0.37 (-12.2%) | 450,147 | $2.89 | $2.949 | $2.50 | $3.04 | Close on Oct 30, 2026 |
Daily closes
Last 3 months, Jul 30, 2026 – Oct 30, 2026 · NASDAQ:FISN · USD, adjusted for splits
| Day | Close | Change | % | Open | High | Low | Volume |
|---|---|---|---|---|---|---|---|
| $2.67 | -0.37 | -12.2% | $2.89 | $2.949 | $2.50 | 450,147 | |
| $3.04 | -0.27 | -8.2% | $3.32 | $3.32 | $2.875 | 563,984 | |
| $3.31 | +0.62 | +23.0% | $2.72 | $3.409 | $2.611 | 951,927 | |
| $2.69 | +0.53 | +24.5% | $2.17 | $2.72 | $2.17 | 612,765 | |
| $2.16 | -0.14 | -6.1% | $2.29 | $2.31 | $2.10 | 406,485 | |
| $2.30 | -0.11 | -4.6% | $2.41 | $2.48 | $2.25 | 667,265 | |
| $2.41 | -0.22 | -8.4% | $2.56 | $2.61 | $2.35 | 458,180 | |
| $2.63 | -0.18 | -6.4% | $2.91 | $2.92 | $2.58 | 895,867 | |
| $2.81 | -0.85 | -23.2% | $3.62 | $4.13 | $2.80 | 2,130,796 | |
| $3.66 | +0.21 | +6.1% | $3.59 | $3.81 | $3.39 | 715,494 | |
| $3.45 | -0.20 | -5.5% | $3.66 | $3.75 | $3.40 | 362,900 | |
| $3.65 | -0.20 | -5.2% | $3.84 | $3.85 | $3.55 | 690,100 | |
| $3.85 | -0.16 | -4.0% | $3.95 | $3.98 | $3.63 | 490,500 | |
| $4.01 | -0.17 | -4.1% | $4.02 | $4.20 | $3.96 | 417,300 | |
| $4.18 | -0.27 | -6.1% | $4.50 | $4.56 | $4.12 | 417,100 | |
| $4.45 | -0.21 | -4.5% | $4.70 | $4.77 | $4.40 | 416,500 | |
| $4.66 | -0.42 | -8.3% | $5.05 | $5.08 | $4.61 | 477,200 | |
| $5.08 | -0.39 | -7.1% | $5.40 | $5.46 | $5.06 | 194,900 | |
| $5.47 | +0.09 | +1.7% | $5.40 | $5.85 | $5.40 | 277,700 | |
| $5.38 | -0.19 | -3.4% | $5.60 | $5.73 | $5.31 | 197,000 | |
| $5.57 | +0.39 | +7.5% | $5.44 | $6.05 | $5.25 | 520,700 | |
| $5.18 | +0.05 | +1.0% | $5.15 | $5.24 | $4.90 | 336,500 | |
| $5.13 | -0.12 | -2.3% | $5.29 | $5.47 | $5.05 | 281,900 | |
| $5.25 | -0.17 | -3.1% | $5.64 | $5.75 | $5.20 | 436,600 | |
| $5.42 | -0.83 | -13.3% | $6.30 | $6.44 | $5.40 | 579,100 | |
| $6.25 | -0.70 | -10.1% | $6.64 | $6.75 | $6.23 | 578,000 | |
| $6.95 | -0.85 | -10.9% | $7.77 | $7.87 | $6.84 | 710,100 | |
| $7.80 | -0.32 | -3.9% | $8.15 | $8.21 | $7.62 | 316,300 | |
| $8.12 | +0.30 | +3.8% | $7.97 | $8.36 | $7.88 | 407,200 | |
| $7.82 | -0.65 | -7.7% | $8.47 | $8.58 | $7.68 | 294,300 | |
| $8.47 | +0.35 | +4.3% | $8.15 | $8.79 | $7.95 | 1,534,800 | |
| $8.12 | +1.02 | +14.4% | $7.19 | $8.24 | $7.01 | 344,100 | |
| $7.10 | -0.01 | -0.1% | $7.13 | $7.38 | $6.90 | 214,600 | |
| $7.11 | -0.05 | -0.7% | $7.18 | $7.57 | $7.04 | 164,000 | |
| $7.16 | 0.00 | 0.0% | $7.11 | $7.37 | $6.68 | 244,700 | |
| $7.16 | +0.41 | +6.1% | $6.89 | $7.39 | $6.75 | 221,500 | |
| $6.75 | -0.36 | -5.1% | $7.00 | $7.14 | $6.73 | 190,600 | |
| $7.11 | +0.13 | +1.9% | $6.92 | $7.24 | $6.80 | 205,800 | |
| $6.98 | -0.17 | -2.4% | $7.19 | $7.25 | $6.80 | 257,400 | |
| $7.15 | +0.01 | +0.1% | $7.20 | $7.38 | $7.04 | 158,300 | |
| $7.14 | +0.17 | +2.4% | $6.97 | $7.45 | $6.91 | 259,100 | |
| $6.97 | +0.58 | +9.1% | $6.38 | $6.98 | $6.17 | 338,300 | |
| $6.39 | -0.32 | -4.8% | $6.70 | $6.84 | $6.10 | 366,300 | |
| $6.71 | +0.15 | +2.3% | $6.77 | $7.03 | $6.62 | 208,400 | |
| $6.56 | -0.37 | -5.3% | $6.86 | $7.10 | $6.42 | 247,100 | |
| $6.93 | +0.04 | +0.6% | $6.93 | $7.24 | $6.76 | 182,600 | |
| $6.89 | -0.04 | -0.6% | $6.98 | $7.33 | $6.77 | 165,200 | |
| $6.93 | -0.20 | -2.8% | $7.28 | $7.41 | $6.78 | 289,083 | |
| $7.13 | -1.12 | -13.6% | $8.20 | $8.21 | $7.025 | 318,146 | |
| $8.25 | +0.48 | +6.2% | $7.83 | $8.30 | $7.83 | 145,300 | |
| $7.77 | -0.23 | -2.9% | $8.02 | $8.03 | $7.68 | 122,900 | |
| $8.00 | +0.18 | +2.3% | $7.98 | $8.34 | $7.81 | 196,600 | |
| $7.82 | -0.30 | -3.7% | $8.03 | $8.24 | $7.64 | 236,300 | |
| $8.12 | -0.52 | -6.0% | $8.75 | $9.05 | $8.02 | 188,700 | |
| $8.64 | +0.39 | +4.7% | $8.26 | $8.87 | $8.20 | 183,100 | |
| $8.25 | -0.09 | -1.1% | $8.40 | $8.69 | $8.10 | 202,900 | |
| $8.34 | +0.09 | +1.1% | $8.26 | $8.88 | $8.20 | 172,100 | |
| $8.25 | +0.30 | +3.8% | $8.12 | $8.41 | $7.77 | 215,159 | |
| $7.95 | -1.04 | -11.6% | $9.10 | $9.195 | $7.91 | 407,947 | |
| $8.99 | -0.23 | -2.5% | $9.25 | $9.55 | $8.76 | 181,100 | |
| $9.22 | +0.52 | +6.0% | $8.61 | $9.54 | $8.52 | 252,200 | |
| $8.70 | -0.40 | -4.4% | $9.03 | $9.20 | $8.40 | 425,100 | |
| $9.10 | -0.82 | -8.3% | $9.62 | $10.50 | $8.82 | 295,500 | |
| $9.92 | +0.51 | +5.4% | $9.53 | $10.11 | $9.40 | 198,600 | |
| $9.41 | -0.21 | -2.2% | $9.75 | $10.02 | $9.41 | 53,900 | |
| $9.62 | -0.10 | -1.0% | $9.53 | $9.70 | $9.30 | 83,900 |
- Ticker
- NASDAQ:FISN
- Asset type
- Stock
- Exchange
- NASDAQ
- Currency
- USD
What changed lately
Latest news release · Oct 20, 2026
Deep Fission Signs Binding 25-Year Master Energy Purchase Agreement for Planned Commercial Project
Latest deck · October 2026
Corporate Update (October 2026)
Corporate update · 19 slides
Latest news
Deep Fission Signs Binding 25-Year Master Energy Purchase Agreement for Planned Commercial Project
Oct 20, 2026
Closed $2.81 (-23.2%) on Oct 20, 2026
Deep Fission Honored by Goldman Sachs for Entrepreneurship
Oct 14, 2026
Closed $3.85 (-4.0%) on Oct 14, 2026
Deep Fission Schedules Business Update Call on Tuesday, October 20, 2026
Oct 1, 2026
Closed $5.18 (+1.0%) on Oct 1, 2026
Deep Fission to Participate in Upcoming Investor Conferences
Sep 29, 2026
Closed $5.25 (-3.1%) on Sep 29, 2026
Deep Fission Rejects Distortions in Short-Seller Report
Sep 25, 2026
Closed $5.42 (-13.3%) on Sep 28, 2026
Deep Fission and Youngquist Brothers Announce Collaboration on Deep, Large-Diameter Borehole Drilling for Underground Nuclear Reactor Deployment
Sep 21, 2026
Closed $7.82 (-7.7%) on Sep 21, 2026
Deep Fission Publishes DOE-Approved Nuclear Safety Design Agreement for Gravity™ Pilot Reactor, Demonstrating Commitment to Transparency
Sep 15, 2026
Closed $7.11 (-0.7%) on Sep 15, 2026
Deep Fission Installs and Retrieves Full-Scale Reactor Canister Using Off-the-Shelf Drilling Equipment
Sep 10, 2026
Closed $6.75 (-5.1%) on Sep 10, 2026
Deep Fission Names ShawnTrell Scales as Its First Chief People Officer
Aug 25, 2026
Closed $6.93 (-2.8%) on Aug 25, 2026
Decks
Corporate Update (October 2026)
Corporate update · 19 slides · October 2026
Investor Presentation (August 2026)
Investor deck · 24 slides · August 2026
Investor Presentation (June 2026)
Investor deck · 27 slides · June 2026
Investor Presentation (February 2026)
Investor deck · 30 slides · Feb 10, 2026
Deep Fission, Inc. on 6ix
- News releases
- 16 in the last 12 months · 16 in all · newest Oct 20, 2026 · oldest 2026
- Decks
- 5 decks · latest October 2026
Where Deep Fission, Inc. is listed
| Listing | Exchange | Country | Currency |
|---|---|---|---|
| NASDAQ:FISN · Home listing · This page | NASDAQ | United States | USD |
| BOATS:FISN | BOATS | United States | USD |
| gettex:I18 | gettex | Germany | EUR |
| LS Exchange:A41K7R | LS Exchange | Germany | EUR |
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