Shamrock Holdings announced that it is extending...

Shamrock Holdings announced that it is extending its $42-a-share cash tender offer for all outstanding shares of Polaroid Corp. common stock to 5 p.m. EST Dec. 19. . . . Standard & Poor’s lowered Beverly Hills-based Gibraltar Financial Corp.’s subordinated debt rating to triple C- from triple C+ . . . Los Angeles-based Caesars World Inc. authorized the repurchase of up to 3 million shares of its common stock.