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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.

Egg Hunt 2026: The Grand Eggspress builds on the legacy of Roblox's earlier Egg Hunt events by involving developers, creators and players throughout the development process.

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.

Dentsu was one of OpenAI's four UK agency launch partners and has already managed ChatGPT advertising campaigns for clients.

Built around the question, "What is the highest you can reach?", the campaign presents the Urus SE Performante climbing a mountain road while drawing parallels with milestones in human achievement.

Interest in the sport has been supported by the performances of the national teams, the growth of Japan's domestic league and the success of Japanese players competing both domestically and internationally.

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.

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 collaboration will begin with a new campaign for Pepero, the Korean snack brand, as Lotte looks to capitalise on the growing popularity of Korean culture and consumer products in India.

The collaboration is designed to help brands identify creators whose audiences align more closely with their target customers, supporting creator selection with audience data rather than traditional engagement metrics alone.

The platform combines proprietary audience research with entertainment strategy to help brands identify, evaluate and develop partnerships with entertainment properties and fan communities.