Steven Mandis left hedge fund manager Halcyon Asset Management, said a source with knowledge of the situation who asked not to be named.
Mr. Mandis was vice chairman and CIO of subsidiary Halcyon Structured Asset Management.
Halcyon officials, who declined to comment, are discussing options regarding Mr. Mandis successor, according to the source. Jason Dillow and Vijay Mohan, both managing principals and portfolio managers, continue to manage the firms structured asset strategies.
Mr. Mandis could not be reached for comment about his plans.