Average Fed Mfg Survey: Inventories of finished goods: Current (increase vs decrease; diffusion index; percentage points; seasonally adjusted) - United States - FSR - Monthly
This series is part of the dataset: Average Fed Mfg Survey (FetchSeries Research)
Download Full Dataset (.xlsx)Latest updates. Based on an average of regional Federal Reserve manufacturing surveys, the seasonally adjusted diffusion index for inventories of finished goods was 4.2 (share of CEOs seeing a recent increase minus share reporting a decrease) in September 2026, compared to 4.0 in August 2026.
Sample. There are 268 data points overall in the monthly time series displayed in the graph above. The series covers the time span extending from June 2004 to September 2026.
History. Here's a peek at a few statistics we calculated on the whole sample: the diffusion index had an average value of 3.8; it recorded a bottom of -8.6 in November 2020; it hit a maximum of 16.5 in April 2008.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-07-31 | 8.50000 |
| 2026-08-31 | 3.96667 |
| 2026-09-30 | 4.16667 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Diffusion index for the question: Did inventories of finished goods increase or decrease in the past month? |
| Country | United States |
| Economic concept | Business survey response |
| Data type | Coincident indicator of the business cycle |
| Seasonally adjusted | Yes |
| Deflation method | Not applicable |
| Rescaling | None |
| Measure type | Diffusion index (share of respondents reporting an increase minus share reporting a decrease) |
| Frequency | Monthly |
| Unit | Percentage points |
| Source | FetchSeries Research calculations on Federal Reserve data |
| Source type | Data research lab |
| Data licence | Creative Commons Attribution 4.0 International (CC BY 4.0) + FetchSeries disclaimers |
| Other information | Arithmetic average across 3 regional Federal Reserve manufacturing surveys |
| FSR temporal aggregation code | LM01 |
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