If you'd like to swap your time share for someone else's, or rent a vacation home, RCI would like to help. The company, a leading time share exchange broker, enables its 3.7 million members to trade their time share intervals for vacations at almost 4,500 resorts in more than 100 countries. The company generates revenue through membership and exchange fees. In addition, RCI markets more than 100,000 independently owned vacation rental properties, ranging from condominiums to campgrounds, primarily in Europe. The company's luxury division, Registry Collection, includes 200 properties worldwide. RCI, a subsidiary of hospitality giant Wyndham Worldwide, was founded in 1974 as Resort Condominiums International.