ImmunityBio Shares Triple in Three Weeks, Short-Sellers Face $500 Million Loss
Written by Emily J. Thompson, Senior Investment Analyst
Updated: Jan 21 2026
0mins
Source: Yahoo Finance
- Price Surge: ImmunityBio's stock price has tripled over three weeks, closing at $6.92 on Wednesday with a 6.79% increase, indicating strong market interest in its immunotherapy developments, potentially attracting more investors.
- Volume Spike: Trading volume reached 93.5 million shares on Wednesday, about 357% above the three-month average of 20.5 million shares, signaling a significant rise in investor attention that could lead to further price volatility.
- Short-Seller Losses: With 35% of the public float held short, short-sellers now face nearly $500 million in paper losses, reflecting optimistic market sentiment towards ImmunityBio's future developments, which may prompt short-covering to mitigate losses.
- Market Reaction: Although there was no specific news driving the price increase, the actions of short-sellers covering their positions combined with recent positive developments have contributed to the stock's rise, showcasing ongoing interest in the biotechnology sector.
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Analyst Views on IBRX
Wall Street analysts forecast IBRX stock price to fall
3 Analyst Rating
3 Buy
0 Hold
0 Sell
Strong Buy
Current: 7.720
Low
5.00
Averages
7.33
High
9.00
Current: 7.720
Low
5.00
Averages
7.33
High
9.00
About IBRX
Immunitybio, Inc. is a vertically integrated, clinical-stage biotechnology company developing therapies and vaccines that bolster the natural immune system to defeat cancers and infectious diseases. Using its applied science and platforms to treat cancers, including the development of potential cancer vaccines, as well as developing immunotherapies and cell therapies to reduce or eliminate the need for standard high-dose chemotherapy. Its platforms and their associated product candidates are designed to attack cancer and infectious pathogens by activating both the innate immune system, including NK cells, dendritic cells, and macrophages, as well as the adaptive immune system comprising B and T cells, in an orchestrated manner. Its platforms for the development of biologic product candidates include antibody-cytokine fusion proteins, vaccine vectors, and cell therapies. Its biologic commercial product candidate, Anktiva, is an IL-15 superagonist antibody-cytokine fusion protein.
About the author

Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
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- Significant Sales Growth: The company confirmed ANKTIVA sales at $44.2 million, reflecting a 15% quarter-over-quarter increase and a remarkable 168% year-over-year growth, indicating strong market demand and solidifying its position in the immunotherapy sector.
- Analyst Rating Update: Following the earnings release, BTIG lowered its price target for ImmunityBio from $13 to $12 while maintaining a Buy rating, demonstrating market confidence in the company's growth potential despite some downside risks.
- Investment Outlook Analysis: While IBRX is viewed as a potential investment, analysts suggest that certain AI stocks may offer greater upside potential and lower risk, urging investors to carefully evaluate various investment opportunities to achieve optimal returns.
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- Innovative Therapeutic Platform: The company holds exclusive rights to the TriKE platform designed to activate natural killer cells to directly attack tumors, leveraging technology from the University of Minnesota, showcasing immense potential in the tumor immunotherapy space that could transform existing treatment paradigms.
- Enormous Market Opportunity: The global oncology market is projected to grow from $139 billion in 2025 to $268 billion by 2034, and if GT Biopharma's product line succeeds, it could secure a significant position in this vast market, leading to substantial commercial returns.
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- Clinical Progress: The lead candidate GTB-3650, targeting treatment-resistant blood cancers, has completed patient enrollment across four dose cohorts, with early safety assessments showing no dose-limiting toxicities, and a meaningful data update is expected in the second half of 2026.
- New Drug Development: The first patient for GTB-5550 was dosed in May 2026, targeting the B7-H3 protein across multiple solid tumors, indicating a market potential significantly larger than that of the blood cancer drug, and it utilizes subcutaneous dosing for improved patient convenience.
- Market Outlook: The global oncology market is projected to grow from approximately $139 billion in 2025 to about $268 billion by 2034, positioning GT Biopharma's technology platform to potentially capture a significant share of this expansive market if successful.
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- ImmunityBio Allegations: ImmunityBio, Inc. (NASDAQ:IBRX) is implicated in a class action for the period from January 19, 2026, to March 24, 2026, where executives allegedly overstated Anktiva's capabilities, leading to materially misleading statements about the company's prospects and significant investor losses.
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- FDA Warning Impact: The FDA issued a warning letter to ImmunityBio, citing misleading claims about Anktiva, which led to a more than 21% drop in share price on March 24, 2026, erasing nearly $2 billion in market capitalization and severely impacting investor confidence.
- Class Action Initiation: Hagens Berman has initiated a class action lawsuit on behalf of investors who purchased ImmunityBio securities between January 19 and March 24, 2026, alleging violations of federal securities laws and urging affected investors to submit their losses to support the investigation.
- Promotional Material Issues: The FDA highlighted that ImmunityBio's TV ads and podcast content were misleading, claiming Anktiva could cure all cancers without supporting data, which poses a potential public health risk and exacerbates legal vulnerabilities for the company.
- Investor Rights Protection: Hagens Berman emphasized its investigation into whether ImmunityBio intentionally misled investors and encouraged whistleblowers to provide information to assist the inquiry, demonstrating a commitment to protecting investor rights.
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- Class Action Notice: Rosen Law Firm reminds investors who purchased ImmunityBio (NASDAQ: IBRX) securities between January 19 and March 24, 2026, to apply as lead plaintiffs by May 26, 2026, to participate in the class action, as those who do not will not be represented.
- Fee Arrangement: Investors joining the class action will incur no out-of-pocket costs, as the law firm operates on a contingency fee basis, which alleviates financial burdens and encourages more victims to seek compensation.
- Lawsuit Background: The lawsuit alleges that ImmunityBio made false and misleading statements during the class period, resulting in investor losses when the truth emerged, potentially impacting the company's reputation and future financing capabilities.
- Law Firm's Credentials: Rosen Law Firm specializes in securities class actions and has achieved the largest settlement against a Chinese company, ranked first by ISS Securities Class Action Services in 2017, demonstrating its expertise and success in this field.
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