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  3. /In-stock rate
Glossary

What is in-stock rate?

The percentage of a brand's or retailer's listed products that are available to buy.

Definition

In-stock rate is the share of listed products that can be purchased. Out-of-stock items remain listed but cannot be bought.

How Data Purl measures it

Data Purl records each SKU's availability flag every week and aggregates it by brand, retailer, category and size where available.

Why it matters

Falling in-stock rates at full price can signal strong demand or supply constraints. Rising in-stock rates alongside rising markdowns usually signal excess inventory.

Pitfalls

  • Some retailers hide out-of-stock items rather than flag them, so in-stock rates are most reliable when compared within the same retailer over time.

Related

Full-price availabilityAssortment count
  • Using markdowns as an early inventory and gross-margin signal

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Data Purl

Data Purl turns public retailer websites into investment-grade data: SKU-level price, discount, availability and assortment history across 400+ retailers back to 2013, with brands resolved to their owners, public or private, and listed owners mapped to tickers.

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400+
retailers
1,900+
public companies mapped
4,000
product categories
2013
history back to

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