NEW YORK (MarketWatch) -- U.S. stock-index futures furthered Thursday gains after economic reports had jobless claims falling by 10,000 to 332,000 last week and producer prices rising 0.7% in February. Futures for the Dow Jones Industrial Average DJM3 +0.15% climbed 25 points, or 0.2%, to 14,423. Futures for the S&P 500 index SPM3 +0.27% advanced 4.5 points, or 0.3%, to 1,554.40. Nasdaq 100 futures NDM3 +0.42% added 11.75 points, or 0.4%, to 2,805.25.