I Squared Capital is teaming up with Blackstone on a potential new offer for German media group Ströer’s core advertising business, sources say https://www.bloomberg.com/news/articles/2026-04-13/i-squared-blackstone-are-said-to-mull-joint-bid-for-stroer-unit?taid=69dd14aa7e78760001e405d6&utm_campaign=trueanthem&utm_content=business&utm_medium=social&utm_source=twitter