The Saskatchewan Wheat Pool was a grain handling, agri-food processing and marketing company based in Regina, Saskatchewan. The Pool created a network of marketing alliances in North America and internationally which made it the largest agricultural grain handling operation in the province of Saskatchewan. Before becoming Viterra, SWP had operated 276 retail outlets and more than 100 grain handling and marketing centres. The Saskatchewan Wheat Pool operated under the name of AgPro in the prairie provinces of Manitoba and Alberta. Begun as a co-operative in the 1920s, the company became a publicly traded corporation in the 1990s. After the 2007 takeover of its competitor, Winnipeg-based Agricore United, the Pool name was retired. The merged company operated under the name Viterra until 2013, when it was acquired by Glencore International.