During the period from December 15 to December 21, the global mergers and acquisitions market recorded 854 announced transactions with a combined value of USD 81.33 billion. Of these, 30 deals were valued above USD 500 million, accounting for USD 61.11 billion, or approximately 75% of the total weekly deal value.
IMAA’s 2025 Top Global M&A Deals industry coverage offers an overview of the year’s most significant M&A transactions across eight
Between December 8 and December 14, global M&A activity recorded 689 announced transactions with an aggregate value of USD 62.65 billion. Large-cap deals continued to dominate weekly value, with 31 transactions sized above USD 500 million accounting for USD 49.88 billion, or roughly 80% of total deal value for the period.
The global mergers and acquisitions (M&A) market entered the final month of the year with strong momentum, recording 708 announced deals totaling USD 121.11 billion from December 1 to December 7. Twenty-six transactions were valued above USD 500 million, contributing USD 106.94 billion and representing 88% of the week’s total deal value.
During the week of November 24 to November 30, the global mergers and acquisitions market recorded 521 announced deals, totaling USD 46.68 billion. Thirteen of these deals exceeded USD 500 million, together representing USD 35.71 billion—or 76% of the week’s total value.
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