Fair Isaac Corp., the company behind the widely-used FICO credit score, saw its shares sink Wednesday after the US government took steps to reduce costs for consumers accessing their credit scores. The regulatory action threatens a key revenue stream for the San Jose-based scoring firm.

Officials said the effort aims to make homeownership more accessible by lowering barriers for buyers who need credit reports and scores to qualify for mortgages. The White House has been exploring ways to reduce costs for homebuyers in a market where high interest rates and tight inventory already pose challenges.

Investors responded by selling FICO shares, reflecting concerns that government intervention could reshape the credit scoring industry. The company has long dominated the market with its proprietary scoring algorithms used by virtually all major US lenders. Any policy that weakens that position could have lasting implications for the company's profitability.