ACI Worldwide lifts full-year outlook on 7% Q2 revenue growth

ACI Worldwide reported 7% revenue growth for Q2 2026 and raised full-year guidance, driven by strong payment software performance and AI-driven efficiencies. Biller revenue grew only 5%, and adjusted EBITDA declined due to comparison items and a one-time charge. Real-time payments revenue fell, while net new ARR bookings reached $18 million, down from a strong prior-year period. Management declined to comment on M&A speculation, including a potential Biller divestiture. Q3 guidance of $417–427 million revenue and $90–95 million adjusted EBITDA indicates a back-half-loaded year.