Average Fed Mfg Survey: Inventories of finished goods: Future (increase vs decrease; diffusion index; percentage points; seasonally unadjusted) - 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 unadjusted diffusion index for inventories of finished goods stood at 2.3 (share of CEOs seeing a future increase minus share forecasting a decrease) in September 2026, versus -1.2 in August.
Sample. There are 268 records overall in the monthly series displayed in the plot above. The series covers the time span extending from June 2004 to September 2026.
History. Here's a snapshot of some summary statistics computed on the whole sample: the diffusion index recorded a bottom of -21.6 in February 2009; it reached its maximum of 13.6 in January 2018; it averaged -0.1.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-07-31 | 2.10000 |
| 2026-08-31 | -1.20000 |
| 2026-09-30 | 2.26667 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Diffusion index for the question: Will inventories of finished goods increase or decrease over the next six months? |
| Country | United States |
| Economic concept | Business survey response |
| Data type | Leading indicator of the business cycle |
| Seasonally adjusted | No |
| 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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