The average rate on a 30-year U.S. mortgage ended a three-week streak of increases, reflecting a pullback in long-term U.S. Treasury bond yields.

The average long-term mortgage rate fell to 6.23% from 6.26% last week, mortgage buyer Freddie Mac said Wednesday. A year ago, the rate averaged 6.81%.

Just four weeks ago, the average rate was at 6.17%, its lowest level in more than a year.

Borrowing costs on 15-year fixed-rate mortgages, popular with homeowners refinancing their home loans, also fell this week. The rate averaged 5.51%, down from 5.54% last week. A year ago, it was 6.10%, Freddie Mac said.

Mortgage rates are influenced by several factors, from the Federal Reserve’s interest rate policy decisions to bond market investors’ expectations for the economy and inflation. They gener

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