Business: Carnival Corporation is a global cruise company and one of the largest vacation companies in the world. Their portfolio of leading cruise brands includes Carnival Cruise Lines, Holland America Line, Princess Cruises and Seabourn in North America; P&O Cruises (UK), and Cunard in the United Kingdom; AIDA Cruises in Germany; Costa Cruises in Southern Europe; Iberocruceros in Spain; and P&O Cruises (Australia) in Australia. They also own a tour company that complements their cruise operations: Holland America Princess Alaska Tours in Alaska and the Canadian Yukon. Carnival plc is traded on the London Stock Exchange under the symbol CCL