By Ateev Bhandari, Pritam Biswas and Echo Wang (Reuters) - Shares of StubHub rose about 8% in their New York Stock Exchange debut on Wednesday, but closed the day below their issue price as investors welcomed the ticket reseller marketplace with caution. The New York-based company's shares opened at $25.35 per share, compared with the offer price of$23.5, valuing the ticket reseller marketplace at $9.32 billion at first trade. However, the shares reversed course in a volatile trading session to close 6 ...