
Rocket Mortgage adopts VantageScore 4.0, accelerating FICO's market share decline
Fair Isaac Corporation (FICO) shares dropped 26.85% on September 29, 2026, following a regulatory shift that allows VantageScore 4.0 to replace FICO in mortgage underwriting. Rocket Mortgage announced it will use VantageScore as its primary scoring model for all eligible loans starting in Q4 2026, citing lower costs and broader borrower eligibility. This move follows FHFA Director Bill Pulte's earlier push to diversify credit scoring models, which had already triggered a sell-off in FICO and major credit bureaus in early September.












