Investigation in Progress — No Complaint Filed Yet
BG&G is actively investigating potential securities fraud claims against Deep Fission, Inc.. If a complaint is filed, this page will be updated. Investors are encouraged to contact us now to preserve their rights.
Why Is Deep Fission, Inc. (FISN) Under Investigation?
Bronstein, Gewirtz & Grossman, LLC is investigating potential claims on behalf of purchasers of Deep Fission, Inc. (“Deep Fission” or “the Company”) (NYSE: FISN). Investors who purchased Deep Fission securities are encouraged to obtain additional information and assist the investigation.
The investigation concerns whether Deep Fission has violated federal securities laws.
What Potential Securities Violations Is BG&G Investigating?
On or around June 18, 2026, Deep Fission conducted its initial public offering (“IPO”), selling 2.5 million shares of stock priced at $16.00 per share. Then, on September 26, 2026, Iceberg Research published a short report that described the Company’s underground borehole reactor technology as overhyped and unlikely to achieve commercial viability. Following publication of the Iceberg Research report, Deep Fission’s stock price fell $0.85 per share, or 10.9%, to close at $6.95 per share on September 24, 2026.
What Should Deep Fission, Inc. (FISN) Investors Do?
If you are aware of any facts relating to this investigation or purchased Deep Fission securities, you can assist this investigation. You can also contact Peretz Bronstein or his client relations manager, Nathan Miller, of Bronstein, Gewirtz & Grossman, LLC: 917-590-0911
How Did Deep Fission, Inc. (FISN) Stock React?
How Does BG&G Help Investors in Securities Fraud Investigations?
We represent investors in class actions on a contingency fee basis. That means we will ask the court to reimburse us for out-of-pocket expenses and attorneys' fees, usually a percentage of the total recovery, only if we are successful.
Bronstein, Gewirtz & Grossman, LLC is a nationally recognized firm that represents investors in securities fraud class actions and shareholder derivative suits. Our firm has recovered hundreds of millions of dollars for investors nationwide.
“Our practice centers on restoring investor capital and ensuring corporate accountability, which serves to uphold the essential integrity of the marketplace.”