The New York-based Conference Board's index, which compiles 10 economic indicators of the US economy's direction for the next three to six months, was up 0.1 per cent to a mark of 95.2, compared to a 2004 benchmark of 100.
Indicators based on stock prices, credit conditions and government bond markets contributed to the rise in the leading indicators.
The index was up 0.8 per cent in April, after a 0.3-per-cent drop in March.//DPA