CHANGE: Average rate on 30-year fixed mortgage surpasses 5 percent this week as Treasury yields jump. “The average rate on the 30-year mortgage topped 5 percent this week for the first time since April. Higher rates could further hamper the struggling housing market ahead of the spring’s prime home-buying season. . . . Rates are following the yields on the 10-year Treasury note, which are spiking on fears of higher inflation. Investors have been demanding higher Treasury yields since the Federal Reserve began its $600 billion bond-buying program to boost the economy.”