The Blackstone Group completed a €250m investment in Sia Partners.

The Blackstone Group, an American alternative investment management company, completed a €250m investment in Sia Partners, a strategy consulting firm. "Sia is a fast-growing leader in the space, benefitting from a differentiated service offering given their deep expertise across industry defining megatrends such as energy transition and AI. We look forward to partnering with Matthieu and the wider team to drive long-term growth by leveraging our global footprint, scale and expertise," Lionel Assant, Blackstone Global Co-Chief Investment Officer.