BIIB vs RMD Comparison

Biogen is an established biopharmaceutical company focused on treatments for neurodegenerative and rare diseases. Its declining multiple sclerosis franchise is its largest revenue generator and contributed 40% of total revenue in 2025. Biogen also generates significant revenue from its CD20 collaboration agreements with Roche (19% of total in 2025), which includes oncology drugs Rituxan and Gazyva and multiple sclerosis drug Ocrevus. Biogen's newer franchises include Spinraza (spinal muscular atrophy, with partner Ionis), Leqembi (Alzheimer's disease, collabroation revenue from its partner Eisai), Skyclarys (Friedreich's ataxia, Reata), Zurzuvae (postpartum depression, Sage), and Qalsody (amyotrophic lateral sclerosis, Ionis).

ResMed is one of the largest respiratory care device companies globally, primarily developing and supplying flow generators, masks and accessories for the treatment of sleep apnea. Increasing diagnosis of sleep apnea combined with ageing populations and increasing prevalence of obesity is resulting in a structurally growing market. The company earns roughly two thirds of its revenue in the Americas and the balance across other regions dominated by Europe, Japan and Australia. Recent developments and acquisitions have focused on digital health as ResMed is aiming to differentiate itself through the provision of clinical data for use by the patient, medical care advisor and payer in the out-of-hospital setting.