Blackstone completed an investment in Nautic Partners, a middle-market private equity firm. Financial terms were not disclosed. “We have been impressed with the Nautic team’s combination of deep sector expertise and dedication to collaborating with strong management teams. This approach has allowed them to deliver outstanding investment results over a long period of time and build an enviable reputation among their peers. The firm is well-positioned for the future and we are delighted to be their partners on this journey," Mustafa Siddiqui, Blackstone Head of GP Stakes.