U.S. Treasury yields were little changed early Friday as global investors awaited a highly anticipated keynote speech by Federal Reserve Chair Kevin Warsh at Jackson Hole. The 10-year Treasury note yield was less than 1 basis point higher at 4.676% at 4 a.m. ET, while the 30-year Treasury bond yield rose by less than 1 basis point to 5.199%. The 2-year Treasury note yield was unchanged at 4.229%. One basis point equals 0.01%, and bond yields move inversely to prices. Investors will examine Warsh's remarks for clues about his views on monetary policy, persistently above-target inflation and the effect of higher long-term borrowing costs. Warsh took office in May for a four-year term but has so far offered little commentary on the economy or policy outlook. Some market watchers expect him to avoid detailed guidance on the path ahead and emphasize broad themes instead.