Deep Fission (FISN) vs ONE Nuclear Energy (ONEN)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 8, 2026.
Summary
Deep Fission is the larger company by market cap ($299.2 million vs $205.7 million), about 1.5 times the size.
Summary generated from market data by MetaCap's automated system. Methodology
Relative performance
Percent change in share price from the first common trading day shown; excludes dividends.
Head-to-head
| Metric | FISN | ONEN |
|---|---|---|
| Share price | $5.08 | $1.94 |
| Market cap | $299.24M | $205.71M |
| 1-day change | -7.13% | -3.48% |
| YTD return | — | -81.26% |
| 1-year return | — | -81.02% |
| EPS (TTM) | $-1.73 | — |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| 52-week high | $19.00 | $12.05 |
| 52-week low | $4.90 | $1.82 |
| Distance from 52-week high | -73.26% | -83.90% |
| Analyst consensus | none | — |
| Avg. price target upside | +285.83% | — |
| Average volume | 267.09K | 327.63K |
| Shares outstanding | 58.91M | 106.04M |
| Employees | 51 | — |
| Sector | Industrials | Utilities |
| Industry | Specialty Industrial Machinery | Utilities - Independent Power Producers |
Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.
Key differences
- The two companies sit in different sectors: Deep Fission in Industrials and ONE Nuclear Energy in Utilities.
About Deep Fission
FISN stock →Deep Fission, Inc. develops and deploys small modular nuclear reactors placed deep underground to generate electricity.
Industrials · Specialty Industrial Machinery · 51 employees
About ONE Nuclear Energy
ONEN stock →ONE Nuclear Energy Inc. provides large-scale energy development, ownership, and operation of integrated power generation platforms using fast-track natural gas and advanced nuclear small modular reactor (SMR) technologies.
Utilities · Utilities - Independent Power Producers
FISN vs ONEN FAQ
Which is bigger, Deep Fission or ONE Nuclear Energy?
Deep Fission (FISN) is larger, with a market capitalization of $299.24M compared with $205.71M for ONE Nuclear Energy (ONEN).
Are Deep Fission and ONE Nuclear Energy in the same industry?
No. Deep Fission is in the Industrials sector, while ONE Nuclear Energy is in Utilities.