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A week after the broad correction, the board turned completely green: all six tracked marcom companies ended the week of 4 to 11 August higher.

Omnicom was the biggest decliner, falling more than 5% after disappointing second-quarter profitability.

WPP posted the strongest performance with a gain of nearly 16%, followed by S4 Capital. Havas was the only company to record only marginal growth.

This week, Dentsu was the biggest gainer on the back of a series of account wins, while Omnicom came under pressure and Publicis declined despite raising its full-year outlook.

The company now expects full-year organic net revenue growth of between 4.5 and 5.0 percent, compared with its previous guidance of 4.0 to 5.0 percent.

This week's developments are driven by a new round of layoffs at WPP, Havas winning the global media account for Candy Crush from Omnicom agency OMD, and Dentsu launching its own retail data infrastructure.

The biggest gains came from S4 Capital and WPP, up 14.3% and 13.6% respectively—two companies that have faced pressure over recent quarters.

The week's key developments included Adidas moving its global media business to Omnicom, the expansion of WPP Enterprise Solutions, a potential agency shift at Skechers, and reports that Dentsu plans to take its subsidiary Dentsu Soken private.

The appointment aligns Samsung Australia's media operations with the company's global agency structure, where Publicis Groupe already serves as the media agency of record across many international markets.

LePub, the global creative network within Publicis Groupe, has been named Agency of the Year at the 73rd edition of the Cannes Lions International Festival of Creativity.

A positive week for agency networks, with Publicis posting the biggest gain and S4 Capital the only decliner