Citadel Investment Group has appointed John Rustum as a managing director to lead its Americas distribution effort, the firm has confirmed.

Rustum - latterly a marketing executive at DE Shaw Group - will focus on distribution of Citadel's Kensington and Wellington funds as part of his overall responsibility for Citadel Asset Management's funds, according to media reports.

At DE, Rustum was co-head of marketing and client servicing for the firm's alternative investment platform and benchmark-relative institutional asset management business. Before that, he was head of US convertible sales at Goldman Sachs.

According to the firm's website, the Citadel group - which comprises Citadel Asset Management and Citadel Securities - has offices in Chicago, IL, New York, London, Hong Kong, San Francisco, CA, Boston and Dallas, TX.