Birkenstock is having a moment, and StockX users are here for it. StockX confirmed the L Catterton-backed sandal company — which filed to go public in September — has experienced triple-digit trade ...

StockX is one of several online marketplaces that have turned resales of shoes into a big — and highly valued — business. Scott Cutler, left, the new chief executive of StockX, and Josh Luber, the ...