By Deborah Levine
NEW YORK (MarketWatch) -- Treasury prices gave up most of the morning's gains Tuesday, after the National Association of Realtors said pending sales of existing homes rose 2.6% in June, the fifth straight monthly gain. Ten-year note yields (UST10Y 3.61, -0.02, -0.50%) fell 1 basis point to 3.62%. Bonds were up before the data as investors sold U.S. equities, which improved after the home-sales report.