
FICO Shares Plunge 26% as Rocket Mortgage Adopts VantageScore, Igniting Credit Scoring War
Fair Isaac Corporation (FICO) shares dropped 26.5% on September 30, 2026, following a major competitive shift in the mortgage industry. Rocket Mortgage announced it will switch to VantageScore 4.0 as its preferred credit model for all eligible loans, marking the first time a major lender has moved away from the FICO standard. This move, driven by cost savings and broader consumer access, has intensified fears that AI-driven alternatives and new competitors are eroding FICO's long-standing monopoly.












