Bear Stearns has hired Jeff Tuck, v.p. in the synthetic collateralized debt obligation group at Credit Suisse First Boston, as associate director. Tuck said he will hedge trade positions for Bear's credit derivatives group, reporting to Mark Davies, head of global credit derivatives trading. Tuck declined further comment. Renu Aldrich, spokeswoman for Bear, confirmed the hire but declined further comment as Tuck has not yet started at the firm. Pen Pendleton, spokesman for CSFB, did not provide further information on Tuck's departure and replacement by press time.