Fiserv’s former CEO, now running Social Security, targeted by senators after stock plunges Milwaukee Journal SentinelHagens Berman Announces Investigation into Fiserv, Inc. (FI), Company Facing Lawmakers’ Scrutiny After Admission to Objectively Difficult-to-Achieve Guidance Assumptions, “‘Abysmal’” Q3 2025 Results Business WireFiserv grilled over ex-CEO Yahoo FinanceExclusive | Senate Democrats Want Fiserv to Detail Trump Official’s Tenure The Wall Street Journal