Control your inventory in a world of lean retailing

Area of Science:

• Operations Management
• Supply Chain Management
• Manufacturing Strategy

Background:

• Retailers' adoption of lean retailing necessitates ongoing stock replenishment, shifting inventory risk to manufacturers.
• Increasing product proliferation complicates demand forecasting for manufacturers.
• Current inventory policies often apply a one-size-fits-all approach to stock-keeping units (SKUs) within a product line.

Purpose of the Study:

• To investigate the impact of differentiating inventory policies at the SKU level.
• To explore how SKU-level differentiation can optimize inventory holding costs and improve profitability.
• To examine the application of SKU-level differentiation in sourcing strategies.

Main Methods:

• Analysis of inventory demand variation across different stock-keeping units (SKUs).
• Comparison of a uniform inventory policy versus differentiated policies based on SKU sales volume and demand variability.
• Evaluation of mixed sourcing strategies (offshore vs. close-to-market production) based on SKU characteristics.

Main Results:

• Differentiating inventory policies by SKU can significantly reduce overall inventory levels.
• High-volume SKUs benefit from lower inventory, while low-volume SKUs may require increased stock to manage demand variability.
• A mixed sourcing strategy, producing low-variation goods offshore and high-variation goods locally, optimizes costs.

Conclusions:

• Implementing SKU-level differentiated inventory policies is crucial for manufacturers facing lean retailing pressures.
• Optimizing inventory and sourcing strategies at the SKU level enhances profitability and mitigates inventory risk.
• This approach allows manufacturers to better manage demand uncertainty and reduce operational costs.