The 30-year a bond A US30YT = RR firmed 26 / 32 , taking its a yield to 4.17 a percent , after hitting another a record a low of 4.16 a percent .
The 30-year a bond A US30YT = RR firmed 14 / 32 , taking its a yield to 4.19 a percent from 4.22 a percent .