Orders for U.S. factory goods that signal business investment plans jumped last month by the most in more than a year, suggesting companies are confident about their business prospects.

The Commerce Department said Wednesday that orders for so-called core capital goods, which include industrial machinery, construction equipment and computers, rose 6.3 percent in January from December. A sharp fall in demand for commercial aircraft caused overall durable goods orders to drop 5.2 percent, the first decline since August.