Petsky Prunier tracked a total $19.7 billion in transaction value for the first half. There were 398 deals, up 21% compared with the same period last year.
The company attributed the decline in value to the slow economy, as well as two significant deals in last year’s first half, aQuantive and Doubleclick.
America Online, Microsoft Corp. and WPP Group were the most active among major companies in the first half, with five transactions each.
Digital media generated the most transaction value among the three segments tracked, with 78 transactions totaling $6.3 billion. More than half of those deals involved social media companies.