Novo Nordisk vs. Eli Lilly — The GLP‑1 Market Showdown (2026 Perspective)
1. Market Context & Recent Headlines (Feb 2026)
Novo Nordisk’s setback: Experimental obesity therapy CagriSema underperformed against Lilly’s tirzepatide in a Phase 3 trial, causing a share price drop. (reuters.com)
Heart‑health advantage for Wegovy: Real-world data suggest Wegovy users may have lower heart-attack risk compared to tirzepatide patients. (reuters.com)
Alzheimer’s trial failure: Novo’s GLP‑1 candidate failed in two Alzheimer’s trials, highlighting limits outside metabolic disease. (axios.com)
Cost pressures: Novo announced ~9,000 job cuts due to competition and slowing growth forecasts. (theguardian.com)
2. Company & Drug Overview
Eli Lilly:
Flagship GLP‑1: Tirzepatide (Mounjaro/Zepbound)
Typical use: Diabetes & Obesity
Delivery: Weekly injection
Advantage: Dual agonist (GLP‑1 + GIP) delivering strong weight-loss results
Novo Nordisk:
Flagship GLP‑1: Semaglutide (Ozempic/Wegovy) & Rybelsus
Typical use: Diabetes & Obesity
Delivery: Injection + Oral
Advantage: Global footprint and first-to-market oral GLP‑1 (Rybelsus)
3. Efficacy & Clinical Comparisons
- Weight loss (obesity, no T2D)
Lilly (tirzepatide 15 mg): 20.2–20.9%
Novo (semaglutide 2.4 mg): 13.7–14.9%
→ Lilly superior by ~6 percentage points (SURMOUNT-5, NEJM May 2025) - A1C reduction (type 2 diabetes)
Lilly: –2.0 to –2.3%
Novo: –1.5 to –1.9%
→ Lilly superior by ~0.4–0.5% - Patients achieving ≥25% weight loss
Lilly: 32%
Novo: 16% - Waist circumference reduction
Lilly: –14.7 cm
Novo: –10.5 cm - Gastrointestinal side effects
Both similar; nausea 25–44%, vomiting 10–18%
Tirzepatide generally better tolerated at highest doses - Cardiovascular benefit label
Novo: Already approved (SELECT trial)
Lilly: Expected Q4 2025 (SURPASS-CVOT)
4. Q4 2025 Earnings Results — What Investors Need to Know
Eli Lilly (Q4 2025)
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Reported $19.3 billion in total revenue for Q4 2025, a 43% year‑over‑year increase, driven heavily by Mounjaro and Zepbound GLP‑1 sales.
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Non‑GAAP earnings per share (EPS) rose to $7.54, beating analyst expectations.
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Growth was broad, with U.S. revenue up 43% and international revenue up 43%, indicating strong global demand.
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Key regulatory and pipeline progress included FDA approval of a Kwikpen for tirzepatide and submissions for orforglipron (oral GLP‑1) in multiple regions.
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Lilly provided 2026 guidance with projected revenue of $80 billion–$83 billion and non‑GAAP EPS of $33.50–$35.00, reflecting confidence in continued volume expansion.
Novo Nordisk (Q4 2025)
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Novo reported positive full‑year 2025 GLP‑1 growth, but total GLP‑1 sales declined slightly (~‑5% overall) after strong headwinds and competitive pressure.
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Obesity care sales grew ~182% in 2025, highlighting continued demand for Wegovy, even as injectable GLP‑1 statistics softened.
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Newer formats like oral Wegovy and Wegovy indications helped offset some legacy pressures, but volume growth lagged Lilly’s momentum.
Market reaction:
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Novo’s stock fell sharply in late February 2026 after CagriSema (its next‑gen GLP‑1 candidate) underperformed against tirzepatide in a key Phase 3 trial, dampening near‑term confidence.
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In contrast, Lilly’s stock rallied on the strong quarterly beat and positive guidance, reinforcing Lilly’s leadership in both diabetes and obesity GLP‑1 markets.
5. Pipeline & Future Launches (2026–2027)
Eli Lilly pipeline:
Orforglipron: Oral GLP‑1; FDA submission expected mid‑2026
Retatrutide: Triple agonist with potential best-in-class weight loss
Novo Nordisk pipeline:
Oral Wegovy: FDA decision expected late 2025–early 2026
CagriSema: Phase 3 miss has delayed launch to 2027 or later
Pipeline timing will likely determine competitive advantage over the next 24 months.
6. Emerging GLP‑1 & Related Stocks to Watch
Beyond the big two, several companies are drawing investor attention for their expansion into GLP‑1 and metabolic therapies:
Pfizer (PFE)
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Developing oral GLP‑1 candidates; large balance sheet supports global launches if trials succeed.
Amgen (AMGN)
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Advancing MariTide, a potential once‑monthly GLP‑1/GIP bispecific therapy. Positive mid‑ to late‑stage data could accelerate share gains.
Altimmune
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Working on pemvidutide, a dual agonist targeting obesity and NASH, with potential for regulatory breakthroughs.
Zealand Pharma
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Partnering with big pharma to develop amylin and next‑gen peptide therapies; may benefit from combination approaches.
Sanofi & AstraZeneca
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Both have metabolic programs that could cross into GLP‑1 or complementary pathways, diversifying their portfolios.
Biotech Innovators
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Smaller companies with early‑stage GLP‑1 or dual‑agonist assets can offer higher‑risk, higher‑reward profiles — but face clinical and regulatory uncertainty.
7. Competitive Trends from Q4 2025 into 2026
Prescriptions & Market Dynamics
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Prescription trends suggest semaglutide and tirzepatide continue driving overall GLP‑1 demand, though pricing sensitivity and payer negotiations remain active variables.
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Some payers (including major PBMs) have shifted formularies to favor certain GLP‑1 products, reshaping utilization patterns.
Pricing & Reimbursement
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U.S. pricing reforms and price caps are impacting realized price growth, though volume increases are currently offsetting pricing pressures for major players.
Regulatory Momentum
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Approvals and expanded indications — including for pediatric diabetes and cardiovascular risk reduction — are broadening GLP‑1 use cases, fueling longer‑term demand.
8. Investment & Strategic Implications
Lilly’s advantage:
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Consistent share gains, strong Q4 2025 performance, and robust global expansion signal Lilly is positioned as the current market share leader.
Novo’s opportunity:
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Challenges in 2025 don’t erase Novo’s long‑term GLP‑1 infrastructure. With oral products and cardiovascular market positioning, Novo remains a strategic contender if it can stabilize growth.
Emerging players:
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Investors looking beyond incumbents should balance clinical timelines, regulatory catalysts, and commercialization risks in mid‑ and early‑stage GLP‑1 and peptide therapy stocks.
9. Conclusion — GLP‑1 Market Outlook (2026)
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Eli Lilly’s strong Q4 2025 revenue and guidance boost its competitive momentum.
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Novo Nordisk’s Q4 2025 performance underscores structural headwinds, but also areas of resilient demand.
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Emerging GLP‑1 stocks broaden the opportunity set, especially in oral therapies and next‑gen mechanisms, though they carry higher execution risk.
The GLP‑1 arena remains high growth and rapidly evolving, making it one of the most watched segments in biotech and pharma investing in 2026.
In sum, Eli Lilly is not just winning the GLP-1 war—it's redefining it through innovation and execution, positioning for a multi-decade reign in "diabesity". Novo remains a resilient contender with international scale and value appeal (P/E ~20x vs. Lilly's 56x), but recovery hinges on oral launches and CagriSema redemption. For investors: Lilly for aggressive growth; Novo for steady compounding. The era of injectable dominance is yielding to orals and beyond.
Related:
- World Health Organization Guideline on the Use and Indications of Glucagon-Like Peptide-1 Therapies for the Treatment of Obesity in Adults (JAMA 2025)
- GLP-1 Receptor Agonists May Modestly Reduce Risk of Fourteen Obesity-Related Cancers for People with Diabetes (2025 American Society of Clinical Oncology)
- Tirzepatide: a novel therapeutic approach for Alzheimer’s disease (2025 Metabolic Brain Disease)
- Clinical Evidence for GLP-1 Receptor Agonists in Alzheimer’s Disease: A Systematic Review (J Alzheimers Dis Rep. 2024)
- Neurodegeneration and Stroke After Semaglutide and Tirzepatide in Patients With Diabetes and Obesity (2025 JAMA)
- The GLP-1 Era: How the Ozempic Economy Is Reshaping Healthcare, Markets, and Metabolic Health (2026 Authority Report)

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