Shares of Oxford Health Plans undefined rose after shareholders approved the merger agreement between Oxford and UnitedHealth Group ( UNH ). Oxford shareholders will receive 0.6357 shares of UnitedHealth and $16.17 a share in cash for each share of Oxford they hold. Shares of Oxford traded up 89 cents, or 1.7%, to $54.19. UnitedHealth Group traded up $1.19, or 2%, to $61.27. Health care volume movers included Pfizer; Genentech; Amgen ( AMGN ), down 14 cents to $53.89; Johnson & Johnson ( JNJ ), down 42 cents to $54.53; Schering-Plough ( SGP ), down 18 cents to $17.62; and Boston Scientific ( BSX ), up 3 cents to $42.37.