Trader Joe's has once again topped the list of US grocery retailers with the highest overall scores in the dunnhumby Retailer Preference Index, a nationwide study that examines the US$700 billion US Grocery market. This article is copyright 2019 The Best Customer Guide.

The RPI study surveyed 7,000 US households to determine which of the top largest grocery retailers have the strongest combination of financial performance and consumer emotional sentiment.

The top grocers in the consumer preference index were as follows:

  1. Trader Joe's
  2. Costco Wholesale
  3. Amazon
  4. H-E-B
  5. Wegmans Food Markets
  6. Market Basket
  7. Sam's Club
  8. Sprouts Farmers Markets
  9. WinCo Foods
  10. Walmart
  11. Aldi
  12. Peapod
  13. The Fresh Market

The overall RPI ranking evaluates retailer performance on seven pillars: price, quality, digital, operations, convenience, discounts/rewards and speed. The retailers who focus their business on superior value perception - defined by the strongest combination of price and quality - tend to have the most financial success and the strongest emotional bond with consumers.

Among the key findings from the study:

  • Understand customer needs and be excellent at what matters most to win their preference. Trader Joe's is a prime example of a retailer making trade-offs to deliver superior Value, and it has earned them the top spot for two years in a row. With its small format, lack of digital shopping and limited national brand offering, the retailer focuses on speed of in-store shopping and having a rich Private Brand offering. This bricks-and-mortar only, private brand approach minimizes costs and keep prices low, allowing them to reinvest in customer service, product quality and in-store experience. This strategy sacrifices reaching customers through a growing digital channel and breadth of assortment, and therefore losing on one-stop shop-ability and convenience. However, this loss is also their gain since it allows them to deliver what matters most to their customers.
  • Two needs rise above all others for most food retailers and have the greatest weight in determining RPI ranking, forming the core of value perception
    Price and Quality. Retailers that rank in the first quartile overall excel in value perception and, as a result, have sales growth that is 2x greater than retailers in the second quartile and 9x greater than retailers in the bottom two quartiles. The other customer needs, like digital, speed, convenience or discounts/rewards, while still important, have a weaker association with retailer preference.
  • First quartile retailers are mostly non-traditional grocers, who have developed a highly targeted offering designed to maximize value perception for their specific customer base. More traditional, regional grocery banners with a long history are hurting because of it, having relatively poorer performing financials and/or emotional bonds. The reason: these traditional banners have inferior price perception and/or quality. The RPI's top three overall retailers excel in these two factors (Amazon in price; Trader Joe's and Costco on both).
  • For some traditional, regional grocers, discounts/rewards and promotions are contributing to sales growth, but for many, this is adding to financial difficulty. In the U.S., hundreds of millions of dollars are spent on discounts, rewards and promotions every year, but over two-thirds of promotions don't break even. To maximize the success of a discounts/rewards program, retailers need to have at least average price perception and a highly relevant assortment, supported by a strong private brand.
  • Private brand is a common key to driving value perception and improving customer preference for retailers up and down the rankings. Six of the top private brand performers are in the first quartile of the RPI overall. Additionally, many of the most successful traditional, regional grocers occupy the second quartile, and they complement a highly relevant assortment with a strong private brand, allowing them to maintain solid price perception. Lastly, private brand is a key element in driving both price and quality perception and thus overall value perception, where retailers in the bottom two quartiles are struggling the most.
  • Retailers who tended to see improvements in their digital rank also tended to see slips in their operations (i.e. out of stocks, pricing consistency, clean stores, right product variety). Retailers that ramp up investment in digital must be cautious not to take their eye off the retail basics.
  • Some retailers have achieved an excellent digital customer experience, but their financial performance has not benefited, while others with a focus on digital manage to thrive. Retailers missing any of the following are not maximizing the impact of digital investment: large scale, great price perception and a category DNA leaning toward center store items and non-grocery products.

"While consumer confidence in the US is at a near year high and the US economic growth is outpacing the rest of the world, there are signs of turbulent times ahead and grocery retailers need to be prepared," said Jose Gomes, President of North America for dunnhumby. "Because of pressures that grocery retailers are facing today, a common reaction is to think only of the short term. But by focusing on the customer preference levers that we have identified in this RPI to inform their strategies, retailers can buy an insurance policy for the future to ensure they can weather the storms ahead."

The dunnhumby RPI has been made available for download here: https://www.dunnhumby.com (free registration required).