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Compare · ACIW vs FIS

ACIW vs FIS

Side-by-side comparison of ACI Worldwide Inc. (ACIW) and Fidelity National Information Services Inc. (FIS): market cap, price performance, sector, and recent activity on the wire.

Summary

  • ACIW operates in Technology, while FIS operates in Real Estate - the two are in different parts of the market.
  • FIS is the larger of the two at $21.17B, about 4.9x ACIW ($4.35B).
  • Over the past year, ACIW is down 10.4% and FIS is down 49.9% - ACIW leads by 39.4 points.
  • ACIW has been more active in the news (11 items in the past 4 weeks vs 4 for FIS).
  • FIS has more recent analyst coverage (25 ratings vs 8 for ACIW).
PerformanceACIW-10.43%FIS-49.86%
2025-06-09+0.00%2026-06-05
MetricACIWFIS
Company
ACI Worldwide Inc.
Fidelity National Information Services Inc.
Price
$42.80+0.98%
$40.97-1.21%
Market cap
$4.35B
$21.17B
1M return
-1.14%
-10.88%
1Y return
-10.43%
-49.86%
Industry
Computer Software: Prepackaged Software
Real Estate
Exchange
NASDAQ
NYSE
IPO
News (4w)
11
4
Recent ratings
8
25
ACIW

ACI Worldwide Inc.

ACI Worldwide, Inc., a software company, develops, markets, installs, and supports a range of software products and solutions for facilitating electronic payments to banks, financial intermediaries, merchants, and billers worldwide. The company offers ACI Acquiring, a merchant management system to deliver digital innovation, improve fraud prevention, and reduce interchange fees; ACI Issuing, a digital payments issuing solution; and ACI Enterprise Payments Platform that provides payment processing and orchestration capabilities for digital payments. It also provides ACI Low Value Real-Time Payments, a platform for processing real-time payments; and ACI High Value Real-Time Payments, a payments engine that offers multi-bank, multi-currency, 24x7 payment processing, and SWIFT messaging. In addition, the company offers ACI Omni Commerce, a scalable, omni-channel payment processing platform; ACI Secure eCommerce solution; ACI Fraud Management, a real-time approach to fraud management; ACI Digital Business Banking, a cloud-based digital banking platform; and ACI Speedpay, an integrated suite of digital billing, payment, disbursement, and communication services. The company offers electronic bill presentment and payment services to consumer finance, insurance, healthcare, higher education, utility, government, and mortgage sectors; implementation services, including product installations and configurations, and custom software modifications; and business and technical consultancy, on-site support, product education, and testing services, as well as distributes or acts as a sales agent for software developed by third parties. It markets its products under the ACI Worldwide brand. The company was formerly known as Transaction Systems Architects, Inc. and changed its name to ACI Worldwide, Inc. in July 2007. The company was founded in 1975 and is headquartered in Naples, Florida.

FIS

Fidelity National Information Services Inc.

Fidelity National Information Services, Inc. provides technology solutions for merchants, banks, and capital markets firms worldwide. It operates through Merchant Solutions, Banking Solutions, and Capital Market Solutions segments. The Merchant Solutions segment offers merchant acquiring, integrated payment, and global e-commerce solutions. The Banking Solutions segment provides core processing and ancillary applications; digital solutions, including Internet, mobile, and e-banking; fraud, risk management, and compliance solutions; electronic funds transfer and network services; card and retail payment solutions; wealth and retirement solutions; and item processing and output services. The Capital Market Solutions segment offers securities processing and finance, global trading, asset management and insurance, and corporate liquidity solutions. The company was founded in 1968 and is headquartered in Jacksonville, Florida.

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