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Are companies getting better at M&A?

The latest boom in merger activity appears to be creating more value for the shareholders of the acquiring companies.

DECEMBER 2006 • Richard Dobbs, Marc Goedhart, and Hannu Suonio

Strategy, Growth Article, companies better m&a

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With announced merger activity approaching $4 trillion globally in the first 11 months1 of 2006, the year had already surpassed the record levels set in 2000 (Exhibit 1). That earlier boom was known not only for the number of deals completed but also for a lack of discipline and the number of deals that destroyed value for the shareholders of the acquiring companies; in fact, earlier McKinsey research shows that as many as two-thirds of all transactions failed to create value for the acquirers.2 Are shareholders doing any better this time around?

They appear to be. But there is still room for improvement.

We reviewed nearly 1,000 global mergers and acquisitions from 1997 to 2006, comparing share prices two days before and two days after each deal was announced in order to assess the financial markets’ initial reaction to the deals. Academic research has found a positive correlation between these so-called announcement effects and long-run value creation,3 so in the aggregate, announcement effects are useful in assessing trends in the ability of M&A to create value.4

From our analysis of announcement effects, we compiled two indexes of M&A value creation. The first, deal value added (DVA),...

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