H.C. Wainwright Downgrades Summit to Neutral Amid Trial Concerns
Written by Emily J. Thompson, Senior Investment Analyst
Updated: 53 minutes ago
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Source: seekingalpha
- Rating Downgrade: H.C. Wainwright downgraded Summit Therapeutics (SMMT) from Buy to Neutral, primarily due to concerns over the new late-stage trial readout for sac-TMT, a lung cancer therapy developed by Merck in partnership with Kelun-Biotech.
- Clinical Trial Results: According to an ASCO abstract, the combination of sac-TMT and Merck's Keytruda reduced the risk of disease progression or death by 65% in lung cancer patients, demonstrating a statistically significant effect that could impact SMMT's market performance.
- Competitive Pressure: Analysts noted that Merck now has a credible defense for Keytruda's market position, particularly against Summit's ivonescimab, which previously showed strong performance in similar clinical settings.
- Delayed Survival Data: Concerns were raised regarding Akeso's delay in updating overall survival data, which, while showing favorable early trends, lacks statistical significance and is now expected to be released in 2026, potentially increasing market uncertainty.
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Analyst Views on SMMT
Wall Street analysts forecast SMMT stock price to rise
12 Analyst Rating
8 Buy
3 Hold
1 Sell
Moderate Buy
Current: 17.470
Low
18.00
Averages
42.49
High
131.90
Current: 17.470
Low
18.00
Averages
42.49
High
131.90
About SMMT
Summit Therapeutics Inc. is a biopharmaceutical company focused on the discovery, development, and commercialization of patient, physician, caregiver and societal-friendly medicinal therapies intended to improve quality of life, increase potential duration of life, and resolve serious unmet medical needs. Its lead development candidate is ivonescimab, a novel, potential first-in-class bispecific antibody intending to combine the effects of immunotherapy via a blockade of PD-1 with the anti-angiogenesis effects of an anti-VEGF compound into a single molecule. Ivonescimab is being developed by both Akeso and the Company in multiple Phase III clinical trials. It is also developing ivonescimab in non-small cell lung cancer and other solid tumor settings. Ivonescimab is approved in China in combination with chemotherapy for patients with EGFR-mutated non-small cell lung cancer whose tumors have progressed following an EGFR-TKI based on the results of the HARMONi-A clinical trial.
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.
- Rating Downgrade: H.C. Wainwright downgraded Summit Therapeutics (SMMT) from Buy to Neutral, primarily due to concerns over the new late-stage trial readout for sac-TMT, a lung cancer therapy developed by Merck in partnership with Kelun-Biotech.
- Clinical Trial Results: According to an ASCO abstract, the combination of sac-TMT and Merck's Keytruda reduced the risk of disease progression or death by 65% in lung cancer patients, demonstrating a statistically significant effect that could impact SMMT's market performance.
- Competitive Pressure: Analysts noted that Merck now has a credible defense for Keytruda's market position, particularly against Summit's ivonescimab, which previously showed strong performance in similar clinical settings.
- Delayed Survival Data: Concerns were raised regarding Akeso's delay in updating overall survival data, which, while showing favorable early trends, lacks statistical significance and is now expected to be released in 2026, potentially increasing market uncertainty.
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- Trial Launch: On May 14, 2026, GT Biopharma dosed the first patient in its Phase 1 trial for GTB-5550, a B7-H3-targeted natural killer cell engager, marking a significant advancement in cancer treatment, particularly for patients with prostate, ovarian, and pancreatic cancers.
- FDA Approval: The IND application for GTB-5550 received FDA clearance in February 2026, with the trial structured as a basket trial prioritizing enrollment of advanced cancer patients who have failed prior therapies, demonstrating the company's commitment to addressing unmet medical needs.
- Strong Financial Position: As of March 31, 2026, GT Biopharma reported a cash balance of approximately $9 million, anticipated to sustain operations through Q4 2026, thereby enhancing investor confidence in the progress of the clinical trial.
- Significant Market Potential: Targeting the estimated $362 billion global solid tumor market, the B7-H3 antigen has attracted multiple pharmaceutical companies, indicating a rapidly rising clinical translation potential in this competitive landscape.
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- Trial Launch: GT Biopharma announced on May 14, 2026, that the first patient has been dosed in its Phase 1 dose-escalation trial of GTB-5550, a therapy targeting B7-H3 in solid tumors, marking a significant advancement in the company's oncology efforts.
- Innovative Targeting Mechanism: GTB-5550 is the third TriKE® molecule from GT Biopharma, utilizing subcutaneous administration to enhance patient convenience, particularly in prostate cancer where B7-H3 is expressed in over 90% of metastatic castration-resistant tumors.
- Market Potential Emerges: The rising interest in B7-H3 as an oncology target is underscored by GT Biopharma's trial progress alongside other companies like Summit Therapeutics and IDEAYA, indicating broad applicability of this target in cancer treatment.
- Strengthened Industry Collaborations: The partnership between Summit Therapeutics and GSK further validates the market value of B7-H3, with the combination study of GSK's antibody drug and Summit's bispecific antibody expected to begin in mid-2026, providing positive signals for investors.
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- Investigation Background: Johnson Fistel, PLLP is investigating Summit Therapeutics Inc. (NASDAQ: SMMT) to determine if its executives violated federal securities laws, potentially allowing for recovery of investor losses.
- Financial Disclosure: On April 30, 2026, Summit reported its Q1 2026 financial results and updated on the HARMONi-3 Phase III clinical trial, revealing a significantly higher statistical significance threshold for the interim progression-free survival analysis than previously anticipated.
- Stock Price Impact: Following this disclosure, Summit's stock price sharply declined, resulting in investor losses and prompting Johnson Fistel to investigate compliance with federal securities laws.
- Law Firm Background: Johnson Fistel is a nationally recognized shareholder rights law firm, ranked among the Top 10 Plaintiff Law Firms in 2024, having recovered approximately $90.725 million for clients, demonstrating its effectiveness in advocating for investor rights.
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- Poor Financial Performance: Summit reported a net loss of $189.4 million for Q1 2026, more than tripling the $62.9 million loss from the previous year, indicating significant pressure from increased spending on its lead asset, ivonescimab, for non-small cell lung cancer treatment.
- Price Target Downgrade: Piper Sandler lowered its price target on Summit shares from $17 to $16 while maintaining a ‘Neutral’ rating, reflecting market concerns regarding the company's financial health and clinical trial outcomes.
- HARMONi-3 Trial Update: Although final data from the HARMONi-3 trial is expected in the second half of 2026, the interim analysis did not meet the high statistical bar for early success, leading to investor skepticism about the trial's prospects.
- Market Sentiment Shift: Despite a 25% drop in Summit's stock price following the report, retail sentiment on Stocktwits shifted from ‘bearish’ to ‘bullish’, indicating some investors' optimism for a potential rebound in the stock price.
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