Oracle co-founder Larry Ellison, who purchased Lanai last year reportedly for $300 million, has been named the world’s top billionaire island owner by Wealth-X Research.

Using what it called a proprietary valuation model to assess all asset holdings, Wealth-X found Ellison’s net worth valuation of $43.9 billion topped the list of five individuals who own islands.

Second, with a net worth of $28.3 billion, was Bernard Arnault, owner of Group Arnault, who owns Indigo Island in the Bahamas.

At $24.7 billion Google CEO Larry Page is No. 3. He owns Eustatia island in the British Virgin Islands.

Microsoft co-founder and Vulcan Chairman Paul Allen weighs in at No. 4 with a $15 billion net valuation. Allan Island in Washington State is among his assets.

U.K. businessman Roman Abromovich, at $12.4 billion, owns New Holland Island in St. Petersburg and is the owner of Millhouse Capital.