Manufacturing Business Outlook Survey: Delivery times: Current (increase vs decrease; diffusion index; percentage points; seasonally adjusted) - United States - Philly FED - Monthly
This series is part of the dataset: Manufacturing Business Outlook Survey (Philly FED)
Download Full Dataset (.xlsx)Latest updates. According to survey data about manufacturers collected by the Federal Reserve in Pennsylvania, New Jersey and Delaware, the seasonally adjusted diffusion index for delivery times (share of CEOs seeing a recent increase minus share reporting a decrease) was -3.4 in September 2025, compared to -5.4 in August 2025.
Sample. There are 689 observations overall in the monthly series displayed in the plot above. The span of time covered by the series is from May 1968 to September 2025.
History. Here's a peek at a few simple statistics computed on the entire sample: the diffusion index had a mean of -2.2; it attained a maximum of 39.8 in November 2021; it hit a minimum of -34.2 in June 1980.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2025-07-31 | -4.7 |
| 2025-08-31 | -5.4 |
| 2025-09-30 | -3.4 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Diffusion index for the question: Did delivery times increase or decrease in the past month? |
| Country | United States |
| Economic concept | Business survey response |
| Data type | Coincident indicator of the business cycle |
| Deflation method | Not applicable |
| Seasonally adjusted | Yes |
| Rescaling | None |
| Frequency | Monthly |
| Unit | Percentage points |
| Source | Federal Reserve Bank of Philadelphia |
| Source type | Central bank |
| Data licence | Not copyrightable under U.S. law |
| Measure type | Diffusion index (share of respondents reporting an increase minus share reporting a decrease) |
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