NEW YORK (MarketWatch) -- Treasury prices inched up and the U.S. dollar held onto gains on Thursday after the Labor Department said 444,000 Americans filed first-time claims for unemployment benefits in the latest week, down from a revised number the previous week. The dollar index (DXY 84.93, +0.10, +0.11%) , which measures the U.S. unit against a basket of six major currencies, advanced to 85.068, from 84.852 in late North American trading Wednesday. The euro (CUR_EURUSD 1.2575, -0.0053, -0.4197%) slipped to $1.2575 from $1.2625 Wednesday. Yields to 10-year notes, which move inversely to prices, declined 1 basis point to 3.57%. Bond traders will also be watching demand at the government's sale of 30-year bonds (UST30Y 4.48, +0.06, +1.38%) later in the session.