Investment firm Altimeter Capital led a $255m funding round in StockX, an online marketplace, facilitating auctions between sellers and buyers, then collecting transaction and payment fees, with participation from Dragoneer. "StockX has quickly become one of the largest and fastest growing consumer marketplaces - serving an accelerating global audience thirsting for authenticity and relevant products. The visionary leaders and team have built a new platform for trading and ownership that starts with trust and supports a growing list of products from sneakers to electronics to collectibles. Altimeter is excited to partner for the long haul as StockX becomes one of the most important e-commerce destinations in the world," Brad Gerstner, Altimeter Capital Founder and CEO.