Compare Aon PLC (AON) vs Biogen Inc (BIIB) Price & Performance
Price performance (Past 24H)
Key statistics
Key statistics
Aon PLC vs Biogen Inc — how do they compare? Aon PLC trades at $352.22 (market cap $75.61B), while Biogen Inc trades at $207.38 (market cap $30.13B). The key difference: Aon PLC is far larger — about 2.5× Biogen Inc's market cap, and Aon PLC pays a 0.92% dividend while Biogen Inc pays none. Which is the better fit depends on your goals.
| AON | BIIB | |
|---|---|---|
Market Cap | $75.61B | $30.13B |
Sector | Financials | Health |
52-Week High | $381.26 | $216.63 |
52-Week Low | $308.22 | $128.93 |
Enterprise Value | $90.22B | $37.20B |
Dividend Yield | 0.92% | — |
Aura AI Summary
Signals from Pluang's Aura AI — not financial advice
Aura AI Summary
Signals from Pluang's Aura AI — not financial advice
AON trades at $356.97, down 0.37% with neutral technical signals. The company shows strong fundamentals with Q2 2026 EPS beating estimates at $3.81 versus $3.80 expected, marking the third consecutive quarterly beat. Revenue growth accelerated to 5% organic in Q2 2026, while margins expanded 70 basis points. Analyst consensus price target stands at $410, representing 15% upside potential from current levels.
AON presents a compelling investment case with consistent earnings outperformance and robust profitability metrics including 44.88% ROE. However, premium valuation multiples and modest organic growth create headwinds. The stock offers 15% upside to consensus targets but requires monitoring of valuation compression risks amid competitive insurance brokerage markets.
Biogen (BIIB) trades at $207.13, down 0.39% on the day, with a bullish technical signal and strong analyst support. Recent Q2 2026 earnings of $3.60 per share beat estimates, driven by growth in Alzheimer's and rare disease portfolios, though revenue growth remains modest. The company completed the acquisition of RayThera Inc. in August 2026, enhancing its immunology pipeline. Cash flow from operations remains healthy at $2.20 billion for 2025, supporting strategic investments.
The outlook is positive with a consensus price target of $234.47, implying ~13% upside, but risks include competitive pressures in multiple sclerosis drugs and execution challenges from recent acquisitions. Net income margin compression to 8.32% in 2026 warrants monitoring, though institutional buying and bullish analyst ratings (62.5% Buy) signal confidence in the turnaround story.
Returns comparison
Trailing returns across standard periods
Returns comparison
Trailing returns across standard periods
Top news
Latest headlines on both assets
Top news
Latest headlines on both assets
About Aon PLC
Aon is a leading global provider of insurance and reinsurance brokerage and human resource solutions. Its operations are tilted toward its brokerage operations. Headquartered in London, Aon has about 50,000 employees and operations in 120 countries around the world.
Read more on AON →About Biogen Inc
Biogen and Idec merged in 2003, combining forces to market Biogen's multiple sclerosis drug Avonex and Idec's cancer drug Rituxan. Today, Rituxan and next-generation antibody Gazyva are marketed via a collaboration with Roche. Biogen also markets novel MS drugs Plegridy, Tysabri, Tecfidera, and Vumerity. In Japan, Biogen's MS portfolio is co-promoted by Eisai. Hemophilia therapies Eloctate and Alprolix (partnered with SOBI) were spun off as part of Bioverativ in 2017. Biogen has several drug candidates in phase 3 trials in neurology and neurodegenerative diseases and has launched Spinraza with partner Ionis. Aduhelm was approved as the firm's first Alzheimer's disease therapy in June 2021.
Read more on BIIB →
