The online-only retailer grew sales by 11.8% in 2014.
But Office Depot maintains the top spot, Keynote Systems reports.
Industrial and office supplies retailer W.W. Grainger Inc. jumped up seven spots on the Keynote Mobile Commerce Performance Index for the week ending Dec. 30, landing at No. 2.
Grainger’s mobile commerce site home page loaded on average in 4.44 seconds and did so completely and successfully 99.56% of the time. The weighted and combined load time and success rate earned Grainger an index score of 891 out of 1,000. Grainger is No. 76 in the Internet Retailer Mobile 400.
Office Depot Inc. kept its No. 1 spot on the index, measured by mobile and web performance management firm Keynote Systems Inc., with a load time of 3.07 seconds and a success rate of 99.78% for a score of 971. Barnes & Noble again came in third with a load time of 4.90 seconds and a success rate of 99.56% for a score of 880.
Amazon.com Inc. and Sears Holdings Corp. tied for fourth place, both with a score of 871. Amazon.com had a load time of 6.39 seconds and a success rate of 99.67%. Sears had a load time of 6.41 seconds and a success rate of 99.67%.
Office Depot is No. 65 in the Internet Retailer Mobile 400. BarnesandNoble.com Inc. is No. 31, Amazon is No. 1 and Sears is No. 29.
The index average load time for the week ending Dec. 30 was 8.50 seconds, the average success rate was 99.13% and the average score was 705.
Click here and then click on Keynote Mobile Commerce Performance Index Part 1 and Part 2 to see this week’s complete results for all 30 retailers on the index.
Keynote Systems measures 30 representative m-commerce sites exclusively for Internet Retailer. The sites include merchants in multiple categories and channels, and of multiple sizes, ranging from such giants as Amazon.com Inc. to midsized retailers like Toolfetch.com LLC. Keynote tests the sites in the index every hour Monday through Sunday from 8 a.m. through midnight Eastern time, emulating three different smartphones on three different wireless networks: Apple Inc.’s iPhone 4 on AT&T, the HTC Evo on Sprint and the Droid X on Verizon. The HTC Evo and the Droid X run Google Inc.’s Android operating system. Keynote runs the tests in New York and San Francisco.
Keynote combines a site’s load time and success rate, equally weighted, into a single score. Given that both performance and availability are important, the score reflects the overall quality of the home page; a higher score indicates better performance. Scores also reflect how close sites are to each other in overall quality. The index average score is the midpoint among all the sites’ scores.