|Net Worth:||$15 Billion|
Constantine N. Alexander-Goulandris Net Worth: Constantine N. Alexander-Goulandris is a Greek billionaire who has a net worth of $15 billion. Constantine N. Alexander-Goulandris was born in 1963 in New York City， New York. He is the chairman of the board and majority shareholder of Victory Carriers and Petromaritime， a Monaco-based petroleum and energy shipping company. He purchased the remnants of the company and the flagship company， Olympic Maritime， both originally started in 1943 by family friend the late Greek shipping magnate Aristotle Onassis from the Onassis estate for a reported $250 million. Alexander-Goulandris then grew the privately-owned business into one of the world’s largest energy shipping companies. Among Alexander-Goulandris’ subsidiaries are Petromaritime， the Victory Group (a commercial real estate enterprise which owns over 15，000，000 sq ft (1，400，000 m2) of commercial real estate around the world， including a large portion of Olympic Tower in New York City) and over a dozen additional subsidiaries. Alexander-Goulandris reportedly owns one of the largest mega-yachts in the world and his private jet fleet includes a Boeing 767-400ER with an ultra-sophisticated communications systems and anti-missile defenses. He has also been known to own helicopters. He is reported to be single and keeps a low profile. He maintains homes in Greece， Switzerland， Paris， London， Antibes， New York， Los Angeles， Hawaii and Monaco， his principal residence.