A flurry of deals at the start of the week, particularly in the United States with the $11.1 billion merger of GE's transportation business and rail equipment maker Wabtec, helped reach the milestone.
The last two periods when M&A reached similar levels were in 2007 ($1.8 trillion), a year before the financial crisis and in 2000 ($1.5 trillion), just before the bursting of the dot.com bubble of technology and internet related stocks.
About $28 billion in U.S. deals were announced on Monday, with activity in power, financials, and real estate.
Europe has also seen a deals boom, with April recording the highest value of monthly deals in 10 years, Thomson Reuters data shows, while M&A activity between the United States and Britain hit a 19-year high of $89.6 billion.
And globally, M&A shows no sign of pausing, with Sony Corp saying on Tuesday it would pay $2.3 billion for control of EMI, becoming the world's largest music publisher.
Meanwhile, German conglomerate Bayer is closing in on a $62.5 billion takeover of U.S. Monsanto.
Graphic: MNA -
(Reporting by Julien Ponthus; Editing by Alexander Smith)
