DST, the venture capital firm founded by Yuri Milner, is expected to lead the deal. The online sneaker resale marketplace StockX is in advanced talks to be valued at $1 billion-plus in a new round of financing, Recode has learned. DST Global, the late-stage venture firm run by Russian-American billionaire Yuri Milner, is expected to lead the deal, according to people familiar with the matter. It will be the latest bet by the firm on an e-commerce startups after backing companies like like DoorDash, Wish and Faire. The exact size of the financing round couldn’t be learned.