Aptorum Group Shares Plummet in After-Hours Trading After 235% Surge on Thursday
Written by Emily J. Thompson, Senior Investment Analyst
Updated: Aug 22 2025
0mins
Source: Benzinga
Stock Performance: Aptorum Group Limited's shares fell 33.18% to $2.84 in after-hours trading after a significant rally of 234.65%, closing at $4.25 during regular trading.
Merger and Test Approval: DiamiR Biosciences Corp., Aptorum’s merger partner, received approval for its APOE Genotyping test from the New York State Department of Health, enhancing cognitive decline risk assessment capabilities.
Merger Details: The all-stock merger between Aptorum and DiamiR is expected to close in the fourth quarter, with DiamiR becoming a wholly owned subsidiary while maintaining Nasdaq listing.
Trading Volume Surge: On Friday, trading volume reached 168.16 million shares, significantly higher than the average of 6.87 million, with Aptorum's stock trading within a 52-week range of $0.48 to $7.49.
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Analyst Views on APM
About APM
Aptorum Group Limited is a United Kingdom-based clinical-stage biopharmaceutical company dedicated to the discovery, development and commercialization of therapeutic assets to treat diseases with unmet medical needs, particularly in oncology (including orphan oncology indications) and infectious diseases. Its lead projects are ALS-4, SACT-1 and PathsDx Test. ALS-4 is a small drug molecule which appears to target the products produced by bacterial genes that facilitate the successful colonization and survival of the bacterium in the body or that cause damage to the body's systems. SACT-1 is the first repurposed drug candidate to be developed under the Smart-ACT drug discovery platform. The Company's pipeline is also enriched through the co-development of PathsDx Test, a molecular-based rapid pathogen identification and detection diagnostics technology, with Accelerate Technologies Pte Ltd, the commercialization arm of the Singapore's Agency for Science, Technology and Research.
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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