Optimum Asset Management, a boutique real estate investor and developer, and Blackstone agreed to form an €800m ($903m) joint venture to invest in a 30-asset real estate portfolio in Germany. “We have seen attractive returns from this high-quality portfolio since its creation, which is testament to the strength of the German real estate market and the expertise of our team. We are delighted to be working with Blackstone and firmly believe in the continued prospects of this portfolio, which was built using our granular approach. We place particular emphasis on sourcing the right assets and managing them correctly. The commitment from Blackstone is an endorsement of the German real estate market, this portfolio and Optimum," Alberto Matta, Optimum Founder and Managing Partner.