LOS ANGELES, July 28, 2025 /PRNewswire/ -- The Schall Law Firm, a national shareholder rights litigation firm, reminds investors of a class action lawsuit against Fiserv, Inc. ("Fiserv" or "the Company") (NYSE: FI) for violations of §§10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder by the U.S. Securities and Exchange Commission.Investors who purchased the Company's securities between July 24, 2024 and July 22, 2025, inclusive (the "Class Period"), are encouraged ...