By Deborah Levine
NEW YORK (MarketWatch) -- The dollar held onto gains versus major rivals on Tuesday after a report showed U.S. producer prices rose more than forecast last month. The dollar index (DXY 76.91, +0.57, +0.75%) , which measures the greenback against a basket of currencies, rose 0.8% to 76.958. Still to come is data on industrial production and homebuilders' sentiment, but currency traders' main focus will be on what the Federal Reserve says following its two-day meeting that ends Wednesday.