NEW YORK (MarketWatch) -- The U.S. dollar and Treasury prices held onto gains on Wednesday after ISM said its services-sector index for June fell to 53.3 from 54.6 in May. Yields on 10-year notes 10_YEAR -0.29% , which move inversely to prices, fell 4 basis points to 3.09%. The dollar index DXY +0.50% , which measures the greenback's performance against six other currencies, rose to 75.029, from 75.005 before the data and compared with 74.661 late Tuesday. The euro EURUSD -0.69% declined to $1.4320 from $1.4419 in late North American trading on Tuesday.