argenx discontinues Phase 3 TED studies, shares decline
Written by Emily J. Thompson, Senior Investment Analyst
Updated: Dec 15 2025
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Should l Buy ARGX?
Source: Newsfilter
argenx SE's stock fell by 3.85% and hit a 20-day low amid the announcement of the discontinuation of its Phase 3 UplighTED studies for efgartigimod due to futility concerns.
The decision to halt the trials was based on a recommendation from the Independent Data Monitoring Committee, which indicated that the studies were unlikely to meet their primary endpoints. This news has negatively impacted the company's market outlook and investor sentiment, leading to a decline in share price despite broader market strength, with the Nasdaq-100 up 0.78% and the S&P 500 up 0.58%.
The discontinuation of the trials raises concerns about the company's research progress in treating thyroid eye disease, although argenx emphasized its commitment to patient care and future research endeavors. The company plans to conduct a thorough analysis of the trial data to inform future studies.
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Analyst Views on ARGX
Wall Street analysts forecast ARGX stock price to rise
17 Analyst Rating
14 Buy
3 Hold
0 Sell
Strong Buy
Current: 766.920
Low
858.00
Averages
1048
High
1317
Current: 766.920
Low
858.00
Averages
1048
High
1317
About ARGX
argenx SE, formerly arGEN X BV, is a Netherlands-based biopharmaceutical company. It is primarily engaged in creating and developing a pipeline of differentiated antibody therapeutics for the treatment of severe autoimmune diseases using its discovery platform, Simple Antibody, which exploits characteristics of the llama immune system. The Company develops a pipeline of antibody therapeutics focused on cancer and autoimmune indications. It includes, but is not limited to: Empasiprubart, a complement inhibitor targeting C2, blocking the function of both the classical and lectin pathways, while leaving the alternative pathway intact, ARGX-119 an antagonist to the MuSK receptor with potential in multiple neuromuscular indications.
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: Sales surged from $761.2 million to $1.32 billion, surpassing the expected $1.29 billion, reflecting strong demand for VYVGART and the success of the company's sales strategies.
- Expanded Patient Reach: The number of patients treated with VYVGART globally has reached 19,000, indicating the company's growing influence in the ocular myasthenia gravis (oMG) market and strengthening its competitive position in related disease areas.
- R&D Progress: Argenx has made substantial advancements across multiple development programs, particularly with the successful launch of the pre-filled syringe, marking a strategic expansion in the chronic inflammatory demyelinating polyneuropathy (CIDP) and generalized myasthenia gravis (gMG) sectors.
See More
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- Strong Safety Profile: The safety profile of VYVGART remained consistent with previous studies, with no new safety concerns identified, and patients experienced marked reductions in key ocular symptoms such as diplopia and ptosis, enhancing its competitive edge in the market.
- Robust Sales Performance: Argenx reported Q4 earnings of $8.02 per share, exceeding the consensus estimate of $6.02, with sales soaring from $761.2 million to $1.32 billion, surpassing the expected $1.29 billion, reflecting strong market demand.
- Optimistic Market Outlook: Analyst William Blair stated that these positive results will solidify VYVGART as the preferred biologic therapy for all MG patients and continue to increase its first-line biologic market share, indicating significant growth potential ahead.
See More
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- Significant Sales Surge: Vyvgart's sales surged over 70% year-over-year, reflecting strong market demand for the drug and establishing a solid foundation for future revenue growth for the company.
- Earnings Beat Expectations: The company's earnings exceeded market expectations, indicating that its effective strategies in research and marketing are yielding results, thereby boosting investor confidence.
- Strategic Market Expansion: Following Vyvgart's success, Argenx plans to further expand its product line in the ophthalmology sector, aiming to enhance overall competitiveness through continuous innovation and market penetration.
See More
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- Earnings Highlights: argenx SE reported a Q4 GAAP EPS of $8.02, exceeding expectations by $1.70, indicating a significant improvement in profitability and reflecting the company's competitive position in the market.
- Revenue Growth: Q4 2025 revenue reached $1.29 billion, a 75% year-over-year increase, although it missed expectations by $10 million, suggesting challenges in the company's rapid expansion.
- Product Sales Performance: VYVGART's net sales for 2025 were $1.3 billion, with annual sales of $4.2 billion, significantly up from $0.7 billion and $2.2 billion in 2024, demonstrating strong market demand.
- FDA Review Progress: The label expansion application for VYVGART is undergoing FDA priority review, and if approved, it will further drive sales growth and enhance the company's market position.
See More
argenx Reports $4.2 Billion in 2025 Net Sales, Achieving First Year of Profitability
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- First Year of Operating Profitability: The company reported $1.1 billion in operating income for 2025, marking its first year of profitability, which underscores successful cost management and market penetration, thereby boosting investor confidence.
- Product Line Expansion: The label expansion of VYVGART is supported by positive results from the ADAPT SERON and OCULUS studies, with a PDUFA target action date of May 10, 2026, for the anti-AChR antibody-negative gMG filing, reinforcing its leadership in the autoimmune disease sector.
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See More
