Banc of America Securities has hired Ron Juster, a longtime agency trader, according to people close to the situation. Juster was dismissed from J.P. Morgan Securities last summer for allegedly mis-marking the firm's book of callable agencies (BW, 8,11). Reached at his residence, Juster confirmed the move, but declined further comment. Calls to Kurt Harrison and Brain Edmonds, the coheads of the U.S. Treasury and agency desks at the firm, were not returned by press time last Friday. Juster will report to Frank Keen, head of the agency trading desk. He will be a flow trader in callable agencies, according to an individual familiar with the situation.