2015 has been a record year for mergers and acquisitions (M&A).
Globally, M&A activity reached a volume of $4.9 trillion, beating the record of $4.6 trillion set in 2007, according to statistics from Dealogic.
CNBC looks back at the 10 biggest deals of the year and who advised on them.
—By Luke Graham, special to CNBC.com, published on Thursday, December 24, 2015.
Data from Thomson Reuters Full Year 2015 Review, with contribution from Dealogic.