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How to Design a Rolling 13-Week Coverage Plan

By Glazix | June 4, 2025

A rolling 13-week coverage plan gives you visibility into inventory, demand, and supplier capacity across a three-month horizon. Unlike static stock reviews or quarterly forecasts, this rolling view allows continuous decision-making that adapts to market changes and vendor reliability in real time.

Why 13 Weeks?

Aligns with typical production and delivery cycles

Catches seasonal and project-based shifts early

Enables proactive PO release and vendor communication

Key Inputs for a 13-Week Plan

Confirmed Orders and Forecasts

Show demand by week at the SKU and customer level.

On-Hand Inventory and In-Transit Stock

Categorized by location and ownership.

Open Purchase Orders

Include vendor ETAs and confirmed production slots.

Supply Risk Indicators

Flag shipments from high-risk vendors or regions.

Coverage Calculation

Weeks of demand covered = (On-hand + In-transit + Confirmed PO) / Forecasted demand

How to Operationalize It

Automate with dashboards (Power BI, Tableau, or NetSuite planning modules)

Review every week in S&OP and procurement syncs

Trigger alerts if coverage drops below defined thresholds

Final Word: A rolling 13-week plan keeps you weeks ahead of disruption, not days behind.


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