IFF vs BIIB Comparison

International Flavors & Fragrances is the largest specialty ingredients producer globally. It sells ingredients for the food, beverage, health, household goods, personal care, and pharmaceutical industries. The company makes proprietary formulations, partnering with customers to deliver custom solutions. Through its taste and scent segments, which each generate around 25% of profits, IFF is a leading flavor and fragrances producer. The health and biosciences business, which generates 30% of profits, is a global leader in probiotics and enzymes. The remaining profits come from the food ingredients business, which sells texturants, plant-based proteins, and other ingredients, though IFF plans to divest this business in the future.

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).