The Street details:
The New York Federal Reserve's key manufacturing index that measures activity in the New York region came up short Wednesday morning. The Empire State Manufacturing Survey index dropped 3 points to 4.1 for early September, after rising 2 points for a reading of 7.1 in August. Economists expected the index to decline to a reading of 6.4, according to Briefing.com, though any reading above zero indicates growth.
Source: NY Fed