The following tables list the largest mergers and acquisitions in their respective decade. Transactions are given in the dollar value for the year of the merger as well as adjusted for inflation. The largest ever acquisition is the 1999 takeover of Mannesmann by Vodafone Airtouch PLC at $202 billion ($290 billion adjusted for inflation). Pfizer appears in these lists the most times, with three entries for a combined transaction value of $240 billion.
Contents
1990s
Top 10 M&A deals worldwide by value from 1990 to 1999:
2000s
Top 10 M&A deals worldwide by value from 2000 to 2010:
2010s
Top 10 M&A deals worldwide by value from 2011 to 2020 (correct as of 31 December 2015):
Notable M&A deals from 2010s include:
Largest ever deals which have failed to complete
This lists catalogues M&A deals which were confirmed, but for a number of reasons, failed to complete.