StubHub Holdings Inc. is pricing its initial public offering at the midpoint of a marketed range, according to people familiar with the matter.The New York-based company sold the shares for $23.50 each after marketing them for $22 to $25, said the people, who asked not to be identified because the information wasn’t public yet. Based on the 34 million shares that the ticket platform had planned to sell in the IPO, StubHub would raise $800 million in the offering....