Average Fed Srv Survey: Inventory levels: Current (increase vs decrease; diffusion index; percentage points; seasonally unadjusted) - United States - FSR - Monthly
This series is part of the dataset: Average Fed Srv Survey (FetchSeries Research)
Download Full Dataset (.xlsx)Latest updates. Based on an average of regional Federal Reserve services surveys, the seasonally unadjusted diffusion index for inventory levels was -5.0 (share of CEOs seeing a recent increase minus share reporting a decrease) in September 2026, versus -7.0 in August 2026.
Sample. There are 153 records in the monthly series presented in the plot above. The series covers the time range going from January 2014 to September 2026.
History. Here’s a quick look at some descriptive statistics computed on the entire sample: the diffusion index recorded a bottom of -12.9 in May 2020; it peaked at 16.9 in April 2024; it had an average value of 2.5.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-07-31 | 5.20000 |
| 2026-08-31 | -6.95000 |
| 2026-09-30 | -5.05000 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Diffusion index for the question: Did inventories 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 | 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 services surveys |
| FSR temporal aggregation code | LM01 |
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