Average Fed Mfg Survey: Inventories (total): 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 (total) stood at 8.9 (share of CEOs seeing a future increase minus share forecasting a decrease) in September 2026, compared to 5.7 in August 2026.
Sample. In this monthly series, there are a total of 268 data points. The time period covered by the series stretches from June 2004 to September 2026.
History. Check out a few descriptive statistics we calculated on the whole sample: the diffusion index attained a maximum of 23.1 in January 2018; it reached a minimum of -25.2 in April 2009; it averaged 1.3.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-07-31 | 8.45000 |
| 2026-08-31 | 5.70000 |
| 2026-09-30 | 8.95000 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Diffusion index for the question: Will inventories 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 2 regional Federal Reserve manufacturing surveys |
| FSR temporal aggregation code | LM01 |
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