US Distillate Days of Supply
Distillate inventories divided by the trailing four-week average of product supplied, in days, from the EIA's Weekly Petroleum Status Report. Weekly since March 1991. It is the inventory series scaled by how fast the fuel is being used, which is the number a refiner or a trucking company actually cares about.
Days of supply
- 4-week avg
- 29.0
Next release: ≈ Oct 7, 2026
Latest reading
As of September 25, 2026, Distillate Cover (Days of supply) stands at 27.9 — down from 29.5 the prior reading, 49% below the June 5, 2020 record of 54.3. Cover below 30 days is thin and below 25 is where price does the rationing. The series is seasonal, with a build into winter for heating oil, so the fair comparison is against the same week in earlier years rather than against the whole record. When cover sits near the bottom of its September range while refineries run flat out, there is no slack left in the system and the diesel crack carries the adjustment. Series history runs from 1991 to present.
Sources, methodology & freshnessEIA Weekly Petroleum Status Report (W_EPD0_VSD_NUS_DAYS), weekly, days; release date estimated as the Wednesday after each survey week · Weekly, with every releaseData as of 2026-09-25 · Open ↓Close ↑
Full history
Methodology & data
Distillate Cover is sourced from EIA directly from the publisher’s own dataset (EIA Weekly Petroleum Status Report (W_EPD0_VSD_NUS_DAYS), weekly, days; release date estimated as the Wednesday after each survey week). We pull the complete history, chart it on a weekly basis, overlay SPY for context, and generate a dated plain-English reading from the latest release — with no smoothing or adjustment beyond what the chart legend states.
Every reading is stamped with its release date. Latest observation 2026-09-25; site refreshed 2026-10-05. Maintained and reviewed by Yuriy Matso; see our methodology for the standards every series on the site is held to.
Frequently asked questions
What is the US Distillate Days of Supply?
Distillate inventories divided by the trailing four-week average of product supplied, in days, from the EIA's Weekly Petroleum Status Report. Weekly since March 1991. It is the inventory series scaled by how fast the fuel is being used, which is the number a refiner or a trucking company actually cares about.
How do you read Distillate Cover?
Cover below 30 days is thin and below 25 is where price does the rationing. The series is seasonal, with a build into winter for heating oil, so the fair comparison is against the same week in earlier years rather than against the whole record. When cover sits near the bottom of its September range while refineries run flat out, there is no slack left in the system and the diesel crack carries the adjustment.
Where does the Distillate Cover data come from?
EIA Weekly Petroleum Status Report (W_EPD0_VSD_NUS_DAYS), weekly, days; release date estimated as the Wednesday after each survey week. We chart the full history and publish a dated, plain-English reading with every release; the raw series is downloadable as CSV at /data/indicators/distillate-days-supply.csv.
How often is Distillate Cover updated?
Distillate Cover is a weekly series from EIA, refreshed here as soon as a new release posts from EIA.
Days of supply
- 4-week avg
- 29.0
Next release: ≈ Oct 7, 2026