Biogen Inc vs Cassava Sciences Inc — how do they compare? Biogen Inc trades at $205.85 (market cap $30.13B), while Cassava Sciences Inc trades at $0.94 (market cap $47.75M). The key difference: Biogen Inc is far larger — about 631× Cassava Sciences Inc's market cap, and Biogen Inc is trading nearer its 52-week high, Cassava Sciences Inc nearer its low. Which is the better fit depends on your goals.
| BIIB | FLNA | |
|---|---|---|
Market Cap | $30.13B | $47.75M |
Sector | Health | Health |
52-Week High | $216.63 | $4.64 |
52-Week Low | $128.93 | $0.87 |
Enterprise Value | $37.20B | -$34.93M |
Signals from Pluang's Aura AI — not financial advice
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.
FLNA trades at $0.9973, up 0.23% with a bearish technical signal despite recent earnings beats. The company shows negative profitability with ROE at -55.79% and ROA at -35.34%, though cash burn improved from -$33M to -$30M projected for 2026. Analyst consensus is strongly bullish with 8 buy ratings versus 4 hold ratings.
The outlook remains challenging due to persistent losses and negative cash flow, but analyst optimism and continued progress in TSC-related epilepsy therapies provide potential catalysts. Key risks include execution challenges in clinical development and the company's ability to secure additional funding.
Trailing returns across standard periods
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 →Cassava Sciences Inc is a clinical-stage biotechnology company engaged in developing a scientific approach for the treatment and detection of Alzheimer's disease. Its therapeutic product candidate is called simufilam, and it is a novel treatment for Alzheimer's disease
Read more on FLNA →