What is the Philly Fed Index?

The Philadelphia Fed Manufacturing Survey, also known as the Philly Fed Index, is one of the earliest monthly indicators of manufacturing sector health in the United States. Published by the Federal Reserve Bank of Philadelphia, it surveys manufacturers in the Third Federal Reserve District, covering eastern Pennsylvania, southern New Jersey, and Delaware. Readings above zero indicate expanding activity, while readings below zero signal contraction. The survey is closely watched by economists and market participants because it often serves as a leading indicator for the national ISM Manufacturing Index released later each month.