retailer preference index

In order to reflect on how the grocery world changed in 2020, we have changed how we calculate our overall Grocery RPI score. Given the historically unique metrics we've witnessed in the economy, the restaurant industry and the grocery industry, along with the rare influence a global pandemic has brought to consumer behavior, we're viewing grocery success in 2020 through a different lens than we viewed grocery success in prior years.

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The 2021 Retailer Preference Index: Who's winning and why. David Ciancio, Global Head of Grocery discusses the 2021 U.S Retailer Preference Index (RPI): Grocery Edition with the lead author of the RPI, Erich Kahner. They unveil key insights and discuss who is winning and who is best positioned for the future.

In the first episode of Customer First Radio, Dave Clements, Global Head of Retail for dunnhumby and David Ciancio, Global Head of Grocery for dunnhumby kick off the series by discussing what it means to be a truly Customer First business, share which retailers and brands today embody a Customer First mindset, and examine how Customer First materialized during the pandemic with retailers.

Our Methodology

Starting in 2018, our Retailer Preference Index (RPI) score established which retailers' value propositions were best positioned to win with customers long-term. Our rankings were the result of a statistical model that predicted how retailer execution on various customer needs – or Preference Drivers – impact both lasting emotional bonds formed with customers, as well as longer-term financial success:


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In dunnhumby's second annual Retailer Preference Index (RPI) study, a comprehensive nationwide study, we re-examine the evolving US grocery landscape to help retailers navigate an increasingly fragmented market where shoppers are, on average, shopping at four grocery stores per month and regularly buying groceries from at least three other channels. The study focuses on the following questions:

  • What drives preference?
  • Who is winning and losing?
  • Why are they winning or losing?
  • What can grocery retailers do to improve preference and performance?

Existing retailer rankings by Consumer Reports or Market Force only use survey data to capture how shoppers feel about the various banners without linking the emotion to financial performance. Others, like Supermarket News, rank banners based on financial metrics but fail to capture how people feel.

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