The New York Federal Reserve's Empire State manufacturing index rose to 19.6 in May from 11.0 in April, compared with expectations of a decrease to a reading of 7.2 in a survey compiled by Bloomberg and the strongest reading in over four years.
The Empire State index is the first manufacturing sector reading for May and suggests a faster pace of expansion than in the previous month.
There were increases in the readings for new orders and prices paid. The readings for shipment and employment decreased but remained well above their breakeven point.