(Bloomberg) -- L Catterton is set to launch an initial public offering of Birkenstock as soon as September that may value the iconic footwear maker at more than $8 billion, people with knowledge of the matter said.Most Read from BloombergLots of US Homeowners Want to Move. They Just Have Nowhere to GoAsia’s Richest Families Fuel Race for Lucrative Finance JobsUS, Europe Are Growing Alarmed by China’s Rush Into Legacy Chips‘FOMO Rally’ Hits a Wall as Stock Fatigue Kicks In: Markets WrapWhy China’