Forbes magazine estimated this week that Heat owner Mickey Arison lost more than 20 percent of his net worth in the last year.

Citing the 28 percent drop in Carnival Cruise Lines stock, the financial publication said Arison lost $1.3 billion. He is still estimated to have $4.5 billion in assets.

Arison is the majority owner of a variety of different cruise brands and recently launched his 100th cruise ship. His core business has been affected by the slump in leisure travel over the last several years.