Renewed concerns over tariffs and the broader economy drove treasury yields higher last week, and mortgage rates followed. As a result, total mortgage application volume dropped 10% last week compared with the previous week, according to the Mortgage Bankers Association's seasonally adjusted index.

“Treasury yields finished higher last week on average despite an intra-week drop, driven partly by renewed concerns of the impact of tariffs on the economy,” says Joel Kan, deputy chief economist at the Mortgage Bankers Association.