US mass retailer Walmart said Kieran Shanahan will step down as Walmart US COO after almost 30 years, remaining as an adviser until the financial year-end. Kyle Kinnard, previously Walmart International COO, has assumed the role immediately and will remain chairman of Walmart de México y Centroamérica. Juan Galarraga has been promoted to oversee Walmart International’s Latin American business. (Grocery Dive)