JPMorgan Chase & Co. said Friday that Kevin Corgan and Rob Milam will become heads of credit trading for North America.

Corgan, previously head of high-yield trading, and Milam, who ran high-grade trading, will split Eric Rosen's job, according to a memo from Daniel Pinto and Matt Zames, co-heads of the company's fixed-income division.

Rosen "has informed us of his intention to pursue new interests early next year and will be looking at new opportunities both inside and outside the firm," Zames and Pinto said in the memo.

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