Ardian, a private investment house, completed the acquisition of a minority stake in Kapten & Son, a brand specializing in the online retail sale of accessories. Financial terms were not disclosed. "We are proud to have been able to create a leading brand in Germany thanks to the quality of our products and the knowledge we have of our customers’ expectations. We now want to accelerate and expand in Europe," Johannes Theobald, Kapten & Son Co-Founder.