Bill Ackman's Pershing Square will sell the rest of its UMG shares after the hedge fund investor's failed acquisition bid for the music giant.

Bill Ackman plans to sell Pershing Square's 4.5% UMG stake after the music giant's board rejected his $64-65 billion takeover bid as fundamentally

The sale will end a tumultuous five-year relationship between Ackman and the world's largest music company.