Key Takeaways CIGI will acquire a controlling stake in Astris Finance, with the deal closing expected in Q3 2025. Astris Finance provides advisory services in M&A, project finance, and capital raising for global developers. The move boosts CIGI's IB capabilities and benefits from rising global demand for infrastructure.Colliers International Group, Inc. (CIGI) recently entered into a definitive agreement to acquire a controlling interest in a global investment banking (IB) company, Astris Infrastructure, ...