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Largest M&A deals worldwide 2019, by transaction value

Merger and acquisition (M&A) deals play a big part in the corporate financing world. Ideally, M&A processes result in creating a company that is both larger and more efficient than the two that have been operating on the market previously. Some of the reasons why companies look to M&A include geographical growth, looking to break into a new industry, increase market share or even talent acquisition.

The largest deals ever done

With a transaction value amounting to 202.8 billion U.S. dollars, the acquisition of Mannesmann AG by Vodafone Air Touch PLC in 1999 was the largest merger and acquisition (M&A) deal to ever take place. It is also one of the oldest transactions on the list. In 2019, the 100 percent acquisition by pharmaceutical and beauty products manufacturer Bristol-Myers Squibb Company of the Biopharmaceuticals manufacturer Celgene Corporation for a deal value of 74 billion U.S. dollars was the largest deal during the year.

M&A in 2019

2019 saw an overall downturn in M&A activity both in terms of deal volume and deal value. On a regional level, North America, the Asia-Pacific region and Western Europe accounted for the majority of deal volume. Key industries globally include software, consumer products and services as well as media and entertainment for volume. In terms of value, the energy and power sector dominated the global landscape.

Largest merger and acquisition (M&A) deals worldwide in 2019, by deal value

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Release date

January 2020



Survey time period


Supplementary notes

Includes deals announced, pending and completed.

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Statistics on "Global mergers & acquisitions"

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