Евгения, ответ на Ваш вопрос – нет, такой термин в смысле “управляющая компания” не применим. “Corporate body” = “body corporate” = “corporate entity” (синонимы).

“body corporate” = Legal entity (such as an association, firm, government, government agency, institution) identified by a particular name. It comprises of a collection or succession of individuals who (in the view of law) have existence, rights, and duties distinct from their existence, rights, and duties as individuals. Also called corporate body or corporate entity.

corporate entity = “юридическое лицо”, “корпорация”

Что касается “Управляющая компания”, то точный перевод будет зависеть от того, что это за управляющая компания.

Если это инвестиционная управляющая компания (примерные аналоги – инвестиционный банк, инвестиционная компания, финансовая компания), это “management company”.

management company
Definition: http://www.businessdictionary.com/definition/management-comp...
Organization retained by investors/owners to manage mutual funds, unit trusts, hotels, resorts, property development, and offshore companies for a management-fee. Management companies comprise of experienced managers with established track records in their respective fields, and usually provide services such as accounting, general administration, maintenance recruitment, and secretarial services.

Если это управляющая компания в смысле “материнская компания”, то есть компания, являющаяся держателем контрольных и блокирующих пакетов акций и паёв ряда предприятий, в том числе возможно и дочерних, тогда это “holding company”.

holding company
Definition: http://www.businessdictionary.com/definition/holding-company...
Type of business organization that allows a firm (called parent) and its directors to control or influence other firms (called subsidiaries). This arrangement makes venturing outside one's core industry possible and, under certain conditions, to benefit from tax consolidation, sharing of operating losses, and ease of divestiture. The legal definition of a holding company varies with the legal system. Some require holding of a majority (80 percent) or the entire (100 percent) voting shares of the subsidiary whereas other require as little as five percent.