Kansas City Fed Services Survey: Inventory levels: Current (increase vs decrease; diffusion index; percentage points; seasonally unadjusted) - United States - Kansas City Fed - Monthly
This series is part of the dataset: Kansas City Fed Services Survey
Download Full Dataset (.xlsx)Latest updates. According to recent survey data about services firms in the Tenth Federal Reserve District, the seasonally unadjusted diffusion index for inventory levels (share of CEOs seeing a recent increase minus share reporting a decrease) stood at -2.0 in September 2026, versus -8.0 in the previous month.
Sample. There are 153 data points overall in the monthly time series shown in the graph above. The series covers the span of time extending from January 2014 to September 2026.
History. Here's a peek at some summary statistics computed on the full sample: the diffusion index recorded its highest level of 25.0 in May 2019; it hit a minimum of -18.0 in May 2020; it had a mean value of 3.5.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-07-31 | 13.0000 |
| 2026-08-31 | -8.00000 |
| 2026-09-30 | -2.00000 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Diffusion index for the question: Did inventory levels 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 | Federal Reserve Bank of Kansas City |
| Source type | Central bank |
| Data licence | Reproduction allowed subject to conditions |
| Other information | FS correspondence: Inventory levels |
| FSR temporal aggregation code | LM01 |
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