FMS vs AFRM Comparison

Fresenius Medical Care is the largest dialysis company in the world, treating nearly 300,000 patients from about 3,600 clinics worldwide as of December 2025. In addition to providing dialysis services, the firm is a leading supplier of dialysis products, including machines, dialyzers, and concentrates. Fresenius accounts for about 35% of the global dialysis products market, creating the world's only fully integrated dialysis business. Services account for about three-fourths of sales, while the balance is generated from medical technology products that enable dialysis treatments.

Founded in 2012, Affirm is a market leader in the buy-now, pay-later space with around $36 billion in transaction volume in fiscal 2025. Affirm offers both zero-interest financing, which is merchant subsidized, and interest-bearing loans, which function as personal loans that are approved on a per-transaction basis. Over 70% of Affirm's transaction volume comes from its interest-bearing loans, which also comprise the majority of its revenue. Affirm operates in the United States, which accounted for more than 95% of its revenue in 2025, but the firm has also expanded to Canada and the United Kingdom.