Share of Shelf

Share of shelf measures how much of a retailer's category space a brand occupies across digital and physical shelves. It originated in physical retail, where brands tracked how many facings they held within a category. In ecommerce, the same idea applies to product listings, search rankings, category pages, and featured placements across retailers and marketplaces.

Why it matters

• Reflects competitive visibility within a category and across retailers
• Signals how effectively pricing, content and retail media spend translate into placement
• Connects directly to discoverability, conversion and category growth

How it is used

• Digital shelf monitoring across retailers and marketplaces
• Competitive benchmarking against category leaders and challengers
• Retail media and promotional performance evaluation