In this May 26, 2015,, file photo, trader Peter Tuchman, left, works the post that handles Time Warner Cable on the floor of the New York Stock Exchange, after Charter Communications announced it is buying Time Warner Cable for $55.33 billion. Companies around the world announced mergers and acquisitions worth $2.3 trillion, according to figures from data provider Dealogic, the second-best half-year total on record and the highest amount since 2007, when $2.6 trillion of deals were announced.