Deep Fission (FISN) Stock Price, News & Analysis
What Changed
Price Move History
- Daily moves over 5%
- 41 94 sessions, June 18, 2026 to October 30, 2026
- Largest daily move
- +24.5% close of October 27, 2026
- 1-month change
- -48% closing prices, September 30, 2026 to October 30, 2026
Company Description
Deep Fission (NASDAQ: FISN) is classified in the specialty industrial machinery industry within the Industrials sector and carries a market capitalization of $170.2M.
FISN has declined 48.0% over the past month. The last closing price was $2.67.
For FY2023, Deep Fission reported diluted earnings per share of -$0.01.
This page collects what Stock Titan holds for FISN, including price data, latest news, SEC filings, financial highlights, upcoming events, and short interest trends.
Stock Performance
Deep Fission (FISN) closed at $2.67 on October 30, 2026. Over the past month, the price has lost 48.0%.
FISN Metrics & Rankings
Price returns through October 30, 2026. Month and year figures include the first trading day. Ranking links may use different dates.
Latest News
Deep Fission has 10 recent news articles. Of the recent coverage, 2 articles coincided with positive price movement and 8 with negative movement. Key topics include conferences, partnership. View all FISN news →
SEC Filings
Deep Fission has filed 10 recent SEC filings, including 5 Form 8-K, 4 Form 4, 1 Form 10-Q. The most recent filing was submitted on . SEC filings provide transparency into a company's financial condition, material events, and regulatory compliance. View all FISN SEC filings →
Financial Highlights
Deep Fission reported diluted earnings per share of -$0.01 in FY2023. The current ratio was 0.01, measuring current assets divided by current liabilities.
Upcoming Events
First reactor delivery
First commercial operations
Commercial deployment target
Initial commercial operation
Full capacity target
Deep Fission has 5 upcoming scheduled events. The next event, "First reactor delivery", is expected in 2027. Investors can track these dates to stay informed about potential catalysts that may affect the FISN stock price.
Short Interest History
Short interest in Deep Fission (FISN) currently stands at 1.8 million shares, up 12.4% from the previous reporting period, representing 4.9% of the float. Since June 2026, short interest has increased by 117.0%.
Days to Cover History
Days to cover for Deep Fission (FISN) currently stands at 4.5 days, up 44.7% from the previous period. The ratio is the reported short interest divided by the average daily trading volume. Since June 2026, the figure has increased by 347%. Across the settlements charted above, it has ranged from 1.0 to 5.2 days.
FISN Company Profile & Sector Positioning
Deep Fission (FISN) operates in the Specialty Industrial Machinery industry within the broader Industrials sector and is listed on the NASDAQ.
Investors comparing FISN often look at related companies in the same sector, including Hurco Cos Inc (HURC), SCHMID Group N.V. (SHMD), Taylor Devices Inc (TAYD), Richtech Robotics Inc. (RR), and Omega Flex, Inc. (OFLX). Comparing financial metrics, valuation ratios, and stock performance across these peers can help investors evaluate FISN's relative position within its industry.