The Chicago PMI (ISM-Chicago Business Barometer) measures the performance of the manufacturing and non-manufacturing sector in the Chicago region. The Index is computed from five weighted raw indexes: Production (0.25), New Orders (0.35), Order Backlog (0.15), Employment (0.10), and Supplier Deliveries (0.15) and then seasonally adjusted to support month-to-month comparisons. A reading above 50 indicates an expansion; below 50 represents a contraction; while 50 indicates no change. Chicago PMI is released one day before the ISM Manufacturing Index.