StockX Featuring the first ever Topps IPO, place a Bid to secure your exclusive 2019 Bowman Chrome X, only on StockX. Introducing 2019 Bowman Chrome X, Exclusive via StockX IPO First slides, then adidas sneakers, now we’re dropping trading cards exclusively via StockX IPO.The Topps IPO is the only way to get your hands on a box or case of Bowman Chrome X, each including one prospect or rookie, numbered to 31, ...