ACIW
ACI WORLDWIDE, INC.
NASDAQ · Technology · Software - Infrastructure · US
$50.27
−1.78%Price chart
Aug 19Aug 24Aug 27Sep 1Sep 4Sep 10Sep 15Sep 18
Key dataSep 18, 2026
Open$51.31
From 52W high−16.47%
Volume1.63M
Market cap$5.08B
P/E (TTM)22.9x
P/S (TTM)2.8x
Div yield—
Key dataSep 18, 2026
Open
$51.31
From 52W high
−16.47%
Volume
1.63M
Market cap
$5.08B
ValuationView details →
P/E (Fwd)
19.2x
EV/EBITDA
12.4x
P/E (TTM)
22.9x
RSI (14)
36.0
MomentumView details →
1D Return
−1.78%
YTD Return
+4.58%
SummaryUpdated Jun 1, 2026
ACI Worldwide, Inc. (NASDAQ:ACIW) is a leading global provider of payment processing software and solutions, founded in 1975 and headquartered in Coral Gables, Florida. Originally known as Transaction Systems Architects, Inc., the company rebranded to ACI Worldwide in 2007 and went public in 1995. ACI has evolved from a traditional software company into a comprehensive digital payments technology provider, serving banks, merchants, and billers across more than 80 countries worldwide. The company has established itself as a critical infrastructure provider in the global payments ecosystem, processing over $14 trillion in payments and 25 billion transactions annually.
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ACI Worldwide announced a definitive agreement to acquire Cranium Ventures, a privately held developer of cloud-native card payment switching technology, to add microservices card switching to its ACI Connetic for Cards platform.19d agoBlackRock Inc. disclosed a new minority stake in ACI Worldwide, Inc., purchasing 16,381,401 shares valued at approximately $823.82 million, representing about 16.11% ownership.28d ago