Libertas Partners, a Greenwich, Conn.-based high-yield dealer, has hired Valerie Whalen as a managing director and media analyst. Whalen becomes the second analyst on what is slated to be a six-person research team by June, says Sal Abbatiello, coo and president of Libertas. Whalen will report to Abbatiello on an interim basis until Libertas announces its new head of research, which may occur as soon as this week, Abbatiello says. Whalen's most recent position was as an analyst at Bear Stearns, where she held similar coverage responsibilities.