Stock Depth vs SKU Breadth
CyberTRIZ analysis · WholesaleDistribution contradiction PI009 · one of 8,235 worked contradictions published by CyberTRIZ.AI
Business Context
Distributors must decide whether available inventory capital should support deeper quantities of fewer products or smaller quantities across a broader assortment. Greater stock depth protects availability on core products, while greater SKU breadth allows the distributor to satisfy more diverse requirements. Attempting to maximize both through inventory alone can create excessive working-capital requirements. The distributor therefore needs sufficient depth where demand is concentrated while maintaining broad access to products.
Wholesale Distribution TRIZ Resolution
Inventory investment should reflect differentiated product roles. High-velocity and high-criticality SKUs can receive greater depth, while lower-frequency products use shallow stock, centralized inventory, or supplier access. Assortment breadth can therefore remain commercially available without every SKU competing equally for inventory capital.
Applicable TRIZ Principles
Principle 1 – Segmentation allocates inventory depth according to product velocity, criticality, and economics.
Principle 17 – Another Dimension places portions of the assortment at different network levels.
Principle 16 – Partial or Excessive Actions uses limited stocking quantities where full inventory depth is unnecessary.
Expected Outcome
Better core-product availability
Broader effective SKU coverage
Higher inventory productivity
Improved capital allocation
Decision Indicators
Early indicators that this contradiction is limiting performance include:
Broad assortments create shallow availability on important products.
Core products stock out while capital remains tied up in low-velocity SKUs.
Inventory policies do not differentiate depth by product role.
SKU additions automatically reduce available capital for existing products.
Total inventory rises whenever assortment breadth expands.
Monitoring these indicators helps determine whether inventory capital is appropriately distributed between product depth and assortment coverage.