FISV Stock Movement Summary Fiserv (FISV) stock rallied following activist investor Jana Partners' disclosure of a significant stake in the payments company. According to fourth-quarter 2025 SEC filings, Jana Partners purchased 2,245,520 shares, representing 7.85% of its portfolio valued at $150.83 million. Jana has been in communication with the company and supports CEO Mike Lyons. Additionally, value investor Jeff Auxier increased his position in Fiserv by 34,525 shares during the same period, bringing his total to 47,965 shares—a 256.88% increase in share count. In related business developments, Fiserv announced new products including Teller Payments, an integrated payment processing solution for government operations, and INDX, a cash settlement platform for digital assets.
Read full analysisFISV Stock Movement Summary Fiserv (FISV) stock rallied following activist investor Jana Partners' disclosure of a significant stake in the payments company. According to fourth-quarter 2025 SEC filings, Jana Partners purchased 2,245,520 shares, representing 7.85% of its portfolio valued at $150.83 million. Jana has been in communication with the company and supports CEO Mike Lyons. Additionally, value investor Jeff Auxier increased his position in Fiserv by 34,525 shares during the same period, bringing his total to 47,965 shares—a 256.88% increase in share count. In related business developments, Fiserv announced new products including Teller Payments, an integrated payment processing solution for government operations, and INDX, a cash settlement platform for digital assets.
Fiserv is one of the largest financial technology companies in the U.S., providing payment processing, core banking software, and merchant services to banks, credit unions, and businesses. The company is undergoing a strategic overhaul under CEO Mike Lyons, branded the 'One Fiserv' plan, and recently launched an INDX digital asset settlement platform. Activist hedge fund Jana Partners has now built a $151 million stake and is pushing for changes, which is driving the current multi-day rally.