Fair Isaac (FICO), a data analytics company, saw its shares plunge more than 26%, triggered by new mortgage pricing rules introduced by Bill Pulte, director of the U.S. Federal Housing Finance Agency.

Pulte announced on the X platform that Fannie Mae and Freddie Mac will adopt a unified pricing table to calculate mortgage costs, and this pricing system will incorporate data from the VantageScore model.

Fair Isaac's FICO credit score is in direct competition with VantageScore; VantageScore is a joint venture product launched by the three major credit bureaus: Equifax (EFX), Experian, and TransUnion.

Fair Isaac's stock has now fallen more than 63% cumulatively so far in 2026.