Shares of Fiserv dropped more than 40% on October 29, 2025. This plunge followed the company’s cut to its financial outlook and weak quarterly results. Fiserv's CEO, Michael Lyons, admitted that prior forecasts relied on “incremental assumptions embedded in our guidance, including outsized business volume growth, record sales activity and broad-based productivity improvements, all of which would have been objectively difficult to achieve even with the right investment and strong execution.” Fiserv cut its full-year revenue and earnings outlook. This drop sent the company's stock to its lowest price per share in over five years.
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