Fiserv Named Top U.S. Merchant Acquirer by Nilson Report

Ranking underscores Fiserv's leadership, scale and trust across the payments ecosystem

MILWAUKEE - May 13, 2026 - Fiserv, Inc. (NASDAQ: FISV), a leading global provider of payments and financial technology solutions, has been named No. 1 in merchant acquiring in the United States in the Nilson Report's annual Largest Merchant Acquirers, marking a significant milestone in the company's leadership in payments and commerce technology. This recognition reflects Fiserv's scale, processing volume and the ability to support merchants across every channel, in-store, online and omnichannel environments.

Published by the Nilson Report, a leading authority in the payments industry, the annual ranking evaluates merchant acquirers based on prior year performance. In the 2025 data, Fiserv ranked first in both total purchase volume and number of transactions, demonstrating its unmatched scale and reliability in enabling secure, seamless commerce.

"This ranking from the Nilson Report validates the strength and scale of our merchant acquiring capabilities and the trust businesses place in Fiserv every day," said Takis Georgakopoulos, Co-President, Technology and Merchant Solutions at Fiserv. "From small businesses to the largest enterprises, we are focused on helping our clients grow through secure, reliable, and innovative payment solutions."

Fiserv's ability to support businesses of all sizes through a broad portfolio of acquiring products and services include:

• Clover, the all-in-one commerce platform that combines payment acceptance, point-of-sale technology, and business management tools, supports small and mid-size businesses across the globe and serves as a key acquiring growth engine.
• For large and omnichannel merchants, Fiserv delivers robust acceptance and acquiring capabilities across digital and in-person channels, including unified gateway, fraud detection, and routing services designed for high transaction volumes and complex environments.
• Acquiring reach is extended by partnerships with independent software vendors (ISVs), independent sales organizations (ISOs), and banks, embedding its acquiring solutions into industry-specific platforms and partner-led distribution models.

About Fiserv

Fiserv, Inc. (NASDAQ: FISV), a Fortune 500 company, moves more than money. As a global leader in payments and financial technology, the company helps clients achieve best-in-class results through a commitment to innovation and excellence in areas including account processing and digital banking solutions; card issuer processing and network services; payments; e-commerce; merchant acquiring and processing; and Clover®, the world's smartest point-of-sale system and business management platform. Fiserv is a member of the S&P 500® Index and one of TIME Magazine's Most Influential Companies™. Visit fiserv.com and follow on social media for more information and the latest company news.

Media Relations:
Torrie Miers
Director, Communications - Merchant Solutions
Fiserv, Inc.
+1-470-669-5181
[email protected]