Joe Biden's top secret service agent David Cho to join hedge fund Citadel

The head of President Joe Biden’s security detail is retiring and taking a job with Citadel, billionaire Ken Griffin’s hedge fund.

David Cho has been with the United States Secret Service for more than 25 years and is the first Korean American to become special agent in charge of the service’s Presidential Protective Division. He’ll start at $43 billion Citadel on Jan. 3 as deputy head of security, according to a spokesman for the firm. 

Cho declined to comment. Spokespeople for the White House and the service also declined to comment.  

A person familiar with the matter said that Cho’s deputy, Darryl Volpicelli,