The Purchasing Managers Index , released on Monday by the Institute for Supply Management , rose to 49.4 in May from 45.4 in April .
The Purchasing Managers Index , released on Monday by the Institute for Supply Management , rose to 49.4 in May from 45.4 in April .
The Institute for Supply Management 's manufacturing index rose to 49.4 in May from 45.4 in April , the biggest monthly gain since December .