The value of mergers and acquisition deals in 2017 was down slightly, compared to a year ago. Region-wise, the US saw deals worth $692 bn, followed by Europe and Asia with $523 bn and $391 bn, respectively. This year, Johnson & Johnson’s $31-bn takeover of Actelion was the biggest deal so far. The third quarter of 2017 has seen deals worth $295 bn to date. Here is a look: