She was the younger sister of former First Lady Jacqueline Bouvier Kennedy Onassis and sister-in-law of President John F. Kennedy.
Adderley Navigation Company Panama S.A. was formed in 1963. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Pride. After 1975 the company passed to the Christina Onassis Group of companies owned by ATOL and managed by OMSA. After 1999 the ownership of Christina Onassis Group of Companies passed to her daughter Athina Onassis. The management of the companies was still held, separately from the Alexander S. Onassis Foundation Companies, until 1999. The company was dissolved in 2000.
Alameda Marine Panama S.A. was formed in 1968. It was a type-D company acting as financial representative.
Arapey Financiera Panama S.A. was formed in 1961. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Chariot. The company sold the vessel in 1983 and purchased the vessel Olympic Galaxy in 1986.
Aristotle S. Onassis S.A. was formed in 1954. It was a type-D company acting mainly as intermediary representative.
Arrow Shipping Company Panama S.A. was formed in 1958. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Wind.
Auburn Shipping Panama S.A. was formed in 1969. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Adventure. After 1975 the company passed to the Christina Onassis Group of companies owned by ATOL and managed by OMSA. After 1999 the ownership of Christina Onassis Group of Companies passed to her daughter Athina Onassis. The management of the companies was still held, separately from the Alexander S. Onassis Foundation Companies, until 1999. The company was dissolved in 2000
Avondale Shipping Company Panama S.A. was formed in 1963. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Gulf (ex Melika). The company was dissolved in 1983.
Benmore Panama S.A. was formed in 1970. It was a type-B company acting as intermediate holding company. It was one of the main mother companies that held the shares of the daughter shipping agencies. In 1990 the company belonged to ASO Group.
Colbeck Marine Panama S.A. was formed in 1966. It was a type-C company mainly engaged in shipping.
Columbia Marine S.A. was formed in 1956. It was a type-C company mainly engaged in shipping. The company was dissolved in 1983
Demerara Panama S.A. was formed in 1966. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Accord.
Devon Financiera Panama S.A. was formed in 1959. It was a type-B company engaged in venture capital investments. It was one of the owners of the Cornwall Marine Panama S.A., holding 750 shares and also one of the owners of Establishment Daedalos.
El Grillon S.A. was a type-C company engaged in real estate. Owns Land in Marbella, Spain
Ensenada Maritima Panama S.A. was formed in 1956. It was a type-C company mainly engaged in shipping and owner of the vessel Olympic Snow.