What is assortment rationalization?
A deliberate reduction in the number of products a brand or retailer offers, often called SKU rationalization.
Definition
Assortment rationalization is the removal of slower-selling or overlapping products to simplify a range, reduce inventory and improve margins. It shows up as a sustained fall in assortment count.
How Data Purl measures it
Data Purl tracks active product counts and delistings (last-seen dates) weekly by brand, retailer and category, so a planned range reduction can be distinguished from temporary stock-outs.
Why it matters
Rationalization can support margins but may signal lost shelf space if it is retailer-driven. Watching which categories are cut, and at which retailers, separates the two.
Questions
How do you measure assortment rationalization?
Track the number of active products by brand, retailer and category over time, together with additions and delistings. A sustained fall in active products with fewer additions than delistings, rather than a short dip from stock-outs, indicates rationalization.
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