The yield on the 10-year Treasury has recently soared toward its highest level since 2023, injecting nervousness into the U.S. stock market that's knocked indexes from their records.

As mentioned, mortgage rates haven't fallen in line with the Fed's rate cuts because they depend on factors beyond the agency's benchmark rate, such as the economy and 10-year Treasury bond yields. For example, when the 10-year treasury rate goes up, mortgage rates tend to follow, and vice-versa.