That's share of shelf. The oldest question in trade marketing — and, until now, the answer arrived in a monthly spreadsheet two weeks late. Shelfy answers it every Monday, with six weeks of history, by category and retailer.
Share of shelf is the proportion of active listings your brand occupies in a category, at a retailer, at a given moment. If a category has 100 active TV listings and your brand has 28, your share is 28%. Add up the relevant brands and you have the full competitive map.
It's a leading indicator of market share and channel availability — it moves before sell-out does.
By (retailer × category × brand). Active listing counts, 6-week momentum, and week-over-week delta.
For point-in-time investigation. Pick any specific day and see the exact snapshot of that moment.
Your brand vs. the average of the leading brands. Catches when you grow or fall faster than the category.
KPIs side by side in the comparison view. Several brands, the same period, all retailers.
The competitive matrix shows you, category by category and brand by brand, how much of the shelf each one holds — and who leads each row. You see the full structure of the market, not just last week's move.