U.S. Treasuries prices rose today on uncertainty ahead of elections in Greece and Ukraine elections, which overshadowed stronger-than-expected U.S. housing data and spurred safe-haven bids.

Greece's first foray into bond markets after a four-year exclusion will be on a "trial and error" basis but the nation expects to fund itself unaided in 2016, Yiannis Stournaras told Reuters

Greek and Portuguese markets are attracting a fair number of yield-hungry investors, as the outlook for the bailed-out countries improves and alternatives look more expensive or increasingly risky.