AB Electrolux (commonly known as Electrolux) is a Swedish multinational home appliance manufacturer, headquartered in Stockholm. It is consistently ranked the worlds second-largest appliance maker by units sold (after Whirlpool). Electrolux products sell under a variety of brand names (including its own), and are primarily major appliances and vacuum cleaners intended for consumer use. The company also makes appliances for professional use. Electrolux has a primary listing on the Stockholm Stock Exchange and is a constituent of the OMX Stockholm 30 index. The company originates from a merger of two companies—Lux AB and Svenska Elektron AB. The former an established manufacturer and the latter a younger company founded by a former vacuum salesman who was also a former employee of the former firm. The origins of Electrolux are closely tied to the vacuum, but today it also makes major appliances.