BIIB vs RPRX Comparison

Biogen is an established biopharmaceutical company focused on treatments for neurological diseases and rare diseases. Its declining multiple sclerosis franchise is its largest revenue generator and contributed 45% of total revenue in 2024. Biogen also generates significant revenue from its CD20 collaboration agreements with Roche (18% of total in 2024), 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).

Royalty Pharma PLC is the largest buyer of biopharmaceutical royalties. The firm has a portfolio of royalties that entitles it to payments based on the sales of biopharma products. Royalty Pharma receives royalties on more than 35 commercial products, including AbbVie and Johnson & Johnson's Imbruvica (for chronic lymphocytic leukemia and other blood cancers), Biogen's Tysabri (for relapsing forms of multiple sclerosis), Vertex's cystic fibrosis franchise, and 10 development-stage product candidates.